Thelimit was 35 mph and 6-1/2 horsepower, which I quicklyignored, building an outlaw Cushman with 8-plus horsepower and a peak speed around 60 mph. Thanks for posting, I'm back from the tests and HD video filming, so my responses will be timely. Many seem to like Honda's auto-decompression, I cannot figure why. It start from the second kick when cold, and sometimes surprises me starting on the first. Withsteady air and fuel flow, and coolanttemperature stability, the XR650R willwant to idle smoothlyagainevenwith its stock ignition and OE carburetor. should have gotten it a while ago. Smoother, easier starting. (Similarly, our fellow forum member Forman rebuilt his Kawasaki KLR engine.) But it really gets there fast, the header makes it loose. (This list isthird party info and somewhat dated; confirm current part numbers availableat your Honda dealership.) Until I read your post I could not find anything definite about the stock jetting. The OEKeihinpilot and main jet are each accessible with the float bowl removed, and the Keihin carburetor can be carefully rotated to access all four float bowl screws. Hello all, I have just broken the 8000km mark, on my hopefully RTW trip aboard my Honda XR650L. I have always done my own engine work, whichshould not surprise anyone, and the collaboration with L.A. Sleeve Company on the machine work was assurance that I have a fresh and very reliable machine! For those curious, here are the model distinctions forHonda XR650R models sold in markets outside the U.S. or North America: Honda XR650R Markets.bmp Honda Euro and Australian XR650R Models.bmp Honda XR650R Carburetor Tuning.bmp. Then I installed the Big Gun header, and it combines with the problems of alcohol damaging the petcock and carburator's o-rings. I opened it 2 more turns and tried to run the bike, but still has a sluggish response off idle that almost turn it off. Pasted as rich text. Build a cheap ADV bike, or a stripped-down tracker this bike is literally a blank slate. I've wanted an XR650r since I was 14 years old. I'm guessing that a 125 main jet was not in the uncorked version of this engine for very long. You will not burn a hole in yournew piston with a 170 at sea level, andsome find that even a 165 will work okay in an uncorked engine. I'll try 2 turns out on mixture setting maybe. But the XR650 is still here, and isnt going anywhere. WebThe XR's Only Mikuni Pumper Carburetor 42mm will reveal the hidden performance within your Honda XR650L. What does the spark plug look like now? I did run the bowl too low, one time, while showing aCRF450X rider what the XR650R "would do". ). The answer is two-fold: 1) the motorcycle had an incomplete "uncorking" job with a partial "Honda Power-Up Kit" installed and 2)a leaking aftermarket air filter had seeped abrasive dirtinto the air stream and through theengine's intake system. Not too long on asphalt, though, unless you soften the rigid seatI'll likely do a Seat Concepts re-padding before next Spring. Consider buying or making any tool that prevents damage or unacceptable stress to parts. After cranking a couple of times for five seconds each, I would do it with the throttle wide open for a bit and sometimes that was all I needed. Probably notunless you develop the same disdain I did for the auto-decompressor setup. We use data about you for a number of purposes explained in the links below. Run the carburetor out of fuel before shutting it off, or at least down a bit. You're right about jet numbers and sizing, David. The idle is still a little erratic, it is much better than before. In the U.S. Lower States, these cycles typically fetch $2500-$5000 depending upon history and overall condition. The 165 main is not a bad idea for overall riding. If so, this leads me to believe that for my application at 3,000-6,000 ft. in average daytime temps of about 80 Fahrenheit, I should go leaner than 175. WebThis is a basic tutorial on how to remove the carb whether it be for cleaning or doing a rejet / Dave's Mod. The 1 size fits all isn't working for me. The most important ingredient in the uncorking process for a Honda XR650R motorcycle engine is the unrestrictedrubber intake manifold anda jetting change to a 175 main jet and 68s pilot jet (base line at sea level). I spent considerable time trying to kick startthe engine before performing a cylinder leakdown test. Baja Designs and others have advanced LED lighting. I love Honda reliability. I will do those tests this weekend and get back to you. I've now had a chance to go through the posts - thanks for the responses! should I ditch that darn K&N? Their needle looks exactly the same as the B53e that's in my carb, but it's hard to tell. If you're okay with using the OEM manual decompressor lever for starting the bike, I highly recommend this camshaft if you want a change. For your riding, especially at higher altitudes, a 165 main jet would be plenty, certainly not harmful, as a place to start. Discussion in 'Thumpers' started by MuscleGarunt, Jan 20, 2012. Did the pipe yesterday. 14) Gently unscrew the brass jets. Your previous content has been restored. Experiment here, as much depends on your riding habits, the altitudeand temperature, andhow much you care to coax a cold engine to warm up. Also from Roberta Flack, who had a vocal gift, this significant breakout song became best noted for its role in the soundtrack for Play Misty for Me, a movie starring Clint Eastwood that was a sensation in 1971: https://www.youtube.com/watch?v=Id_UYLPSn6U, https://www.youtube.com/watch?v=2jQC6L5Z108&list=PL79EA484ED19DD8CD. The more you turn it out, the more fuel it adds. For the longest while, I could not imagine why the engine had every Power-Up Kit modexcept the 175 main jet. A third and ever-present concern with the XR650R is the auto-decompressor mechanism on the camshaft. I immediately rebuilt the top end of the engine, rebuilt the carburetor, mounted new tires and restored the air induction system. This is essentially the non-North America OEM tailpipe cap, you may already have it as "uncorked". Haven't change my cam jet, so the auto-decompresor is still there, but I am wondering how the feel of MORE grunt on low and mid would feel with that Stage 1 you have. Your OEM is a 175, which confirms that Euro non-U.S./N.A. We peddle dreams, the achievable kind, creating an addiction to overland travel. I don't know how long that takes, but I think it is a very long time. Smoother, easier starting. I must say that other thanthe idle speed when cold with the choke completely off, my engine responds wonderfully, bothhot and cold. "Just makes me want to pack up and go!" So, from experience, I am willing to run what Honda considered "normal" jetting (for the non-North America market) as a baseline for sea level tuning. What don't I need? I would not "give it away", be forthright with the buyer but expect a reasonable return. Check the XR650R models covered. I am purposely pushing the outer limits for richness, and a 172 main is on the rich side but tolerable. Before I started the bike when I got it home I found the air filter leaking dust, so I have not ridden it yet. The culprit is the autodecompressor system that sometime seems to stay engaged no matter how much you turn the engine over. An air leak could explain why this problem was worse with the Stage II camshaft, which wants to draw more available air/fuel. If sold at New York, your bike is likely 49-State without California emissions devices. As you crack the throttle, you can instantly feelexhaust heat when the XR650R makes horsepower and BTUs! Rolling past 1/4 throttle involves the needle height setting and gradually becomes a main jet size concern as the throttle gets wider and the slide with needle rises. I believe it was as you said, there was too much fuel with the 190 main jet and as a result, it was sputtering at top speed. COPYRIGHT 2008-document.write(new Date().getFullYear())|COLE PUBLISHING|ALL RIGHTS RESERVED, Mushashi: A custom TVS Ronin by Smoked Garage, Fun Size: 5 Street-Legal Mini Bikes for 2023, Operation Numbnuts: Biltwells Arctic Circle Excursion, BOTT Bruiser: A 1983 Harley XR1000 on auction at Mecum, The $92,229 Indian Challenger RR is a ready-to-race bagger. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Bought a new petcock and a 4.6 gallons tank. Johnny Rivers, Roy Orbison and other country/rock singers worked better inthe localNevada cowboy barsI got into everything Motown shortly after high school but alwaysenjoyed Johnny Rivers. Mixture at the throttle wide open depends much on the carb needle and the main jet so you will need to go for these parts. Since you'll have the carburetor off anyway, you can carefully drill the center of the screw head with a smaller bit. On top of that, the camshaft's weight with the decompression mechanism is an awful lot of upper valvetrain mass to spin at speed. Will be filming from the bike, I'll share the link after our ride. When you have the piece repaired, make certain the weldor positions the two shell parts as they were originally. Per much appreciated good advice I took the carb out last night with the intentions of cleaning it. I am having trouble finding a good guide on the topic so far. RareCj8A leak down test is spot on and conclusive (see HD video for details). (The Denso K22PR-U11 is an alternative if the NGK is not readily available.) Take the rubber boot off the airbox. I'm due for anotherUmmm, on the XR650R? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Choke opened immediately,I can getmy engine to idle stably within a 1/4- to 1/2-mile of riding this time of year. 
It gets lost or damaged, which causes a leak anderratic idle. I am certain that you will find the 190 main jet excessive, but that will be at mid- to full throttle. Here's a list of all the Member benefits on the HUBB. I can remember a DR350S with a hot engine and kicking the thing for five minutes until giving up. When you buy through links on our site, we may earn an affiliate commission. At the magazine's free articles and how-to videos on the XR650R work, andclearly atthe highly detailed 54-minute HD video how-to I did on rebuilding the top-engine (a streaming rental at Vimeo), you canreadily follow the camcorder and photosas I show the intake manifold, the tailpipe and the unrestricted air box. I'm now convinced that a 165 or somain jet would likely work optimallyfor this altitude. 1) Make sure the fuel petcock valve is set to off. Also, I insert a straw through the plug hole just to see the movement. requirements, and California models (XR650R AC designation) were even more restricted by a draconian reshape and air flow restriction inthe rubber intake manifold and the intake air box. Despite the low mileage, this engine was busy overheating its upper cylinder and valves. Check now Retail Price $ 1,241.99 Our Price $ 999.90 Availability: In Stock (Changes Daily) Complete Throttle Assembly ($ 89.90) Complete OEM Part Tuning Performance Upgrade ($ 100.00) When we watched to movie, I was jerked back in time and went on a short refreshertour at YouTube around"Do What You Gotta Do". If tuned properly, a Nippon-Denso or NGK works well. As far as the rubber boot you mention - assuming you're not referring to the rubber o-ring that seals the air box to the side panel - if it's present, from my understanding, the bike is not fully uncorked. Dheintz, You can access and remove the main jet by simply unscrewing the drain plug at the bottom of the float bowl and accessing the jet with an appropriate 1/4" drive metric socket. Thankfully those days are in the past. The only thing remaining that's on the list is the suspension. kit works very well for motorcycle carburetors. The engine runs very well and did so before the spark plug change. I believe this is way too much fuel flow. Having some trouble getting the carb just right. I don't need an accelerator pump. If my XR650R at some point needs a rebuild like his did, I probably would try out the same upgrade. 3. The engine would not idle and only ran smoothly from approximately 1/4-throttle and upward. Take this a step further,use good judgment and back off when you encounter excess resistance. With proper tuning and conservative use of the choke, anyone can share my experience. 
Or maybe the 65 pilot was slightly lean, and he raised the needle one position for more flow. Oh, and there is a simple solution to your problem, which is putting on an aftermarket exhaust with improved air flow. Cut down the seat(still hard) Drill some holes in the foam so the seat can collapse. Use the factory parts schematic to identify your carburetor parts. I'm happy with the Stage I and anticipated that the Stage II would be too much cam for my usage. This was from the intake valve damage and loss of compression, not from over-fueling the engine with a 175 main jet at Texas. (Watch this streaming from Netflix or rent the DVD, you'll see what an HRC version of the XR650R doesfor Johnny Campbell, Andy Grider, Steve Hengeveld, Mouse McCoy, the Roberts family teamand others.) This is simple enough. Given the sea levelaltitude, I had expected a little boost in power, but whether I had just forgotten the kick this bike has or what;the ooomph it now has is really amazing! 5-1/2 years ago during a move, I parked the motorcycle and did not drain the fuel bowls. This can be deceiving if the auto-decompression system is still in place. If it had seat foam like our XR350R's, I would be happy. These bikes are very lean from the factory. I have none of the Californiaemissions pump paraphernalia, which pops up in distinctions between the XR650A and XR650AC parts listings. etc. I'm a U of O grad (W '80), and we lived a total of nine years at Eugene/Springfield and Oakridge, two stints, 1977-82 and 1990-94. After my rebuild, the bike started right away and idled just fine, but the next day when I took it out for a shake-down run, it started to run poorly and refused to idle - almost as if it was running out of gas. Per much appreciated good advice I took the carb out last night with the intentions of cleaning it. I may consider a Stage 1 Hot Cams alternative, mainly to eliminate the auto-decompression mechanism on the OE camshaft. Use a XR650r carb I did that. (only on DVD). This is a test for leakage at the plate, which would be a direct, additionalair source. or even the 112 main jet at Australia, is a testimonial to the engine's stamina and flexibility. My favorite cult classic XR650R movie, "Dust to Glory",shows howrace positions actually change during a pit restart. For a desert playa or sagebrush 'Hare-and-Hound', however, either is the XR350R or XR500R is in its element. If the bike is "uncorked", a 175 main jet at sea level might be even better than the 180, though these engines will tolerate slight enrichment. Probe at the search boxunder"XR650R". There is a difference in the flow between these two varieties. I'm 99% sure that it's the tack welds of an internal pipe that have failed. When you can ride the cycle with dependability, the spark plug coloration and smoothness of the carburetor transitions will let you know whether the jetting and needle setting are correct. His main jet chart goes as high as 182 (sea level at 20 degrees F) and as low as 150 (for 12,000 feet elevation and 100-degrees F if you can findsuch aplace on Earth!). Paste as plain text instead, I believe these are cast aluminum fasteners which are alloyed with zinc (a metal of poor nobility). Just added TCI Products racks and skid protection with Nelson-Rigg bags, check out the magazine article and HD videos. Take the rubber boot off the airbox. Once I started riding again a couple years ago when I got the xr500r I couldn't believe how smooth the old 82XR was by comparison. ALL the information you need to get inspired and learn how to travel anywhere in the world! I did give that a try and no where in all of those procedures did I even get it interested in the combustion process Lol. Its smooth bore design and accelerator pump delivers smooth and responsive acceleration for an overall increase in horsepower and torque throughout the entire power band. Buying ready-made tools can prove cost effective if you value your time. Contact us The OErestrictors are likely out of the air box, too, right?You'll be happy near home with this jetting, and I'm getting away with nearly the same jetting at rides to 6,500 feet: 172 main with straight 68 pilot and the needle at #3 clip position. Anyway, when I open the carb, I'll see what was in it originally and take it from there. Formerly swamped my XR650L and posted what I did to get the bike going again. Find somewhere a #150 main jet that fits your carb and replace yours with that one. On the Honda XR650R, liquid cooling likely compensates some for the ultra lean mixtures in N.A. I'd like to test and confirm this. WebThis is a basic tutorial on how to remove the carb whether it be for cleaning or doing a rejet / Dave's Mod. If the PE78D Australian carburetor has the same throat/bore openingand air flow as the PE78C (other export markets other than U.S./N.A), this Australianbike has been severely detuned. I'm not sure how I like them on the Honda yet, but I do like a narrow bar for tight trails or cross country, making my own trails in Eastern Oregon. From a 175 to a 190 main jet on the XR650R Keihin OE carburetor would not makea lot ofdifference until the throttle is rolled open. Stock needle doesn't have adjustments at all. Does anyone know an approach for optimizing this adjustment? As for your wonderful new acquisition, and you will be thrilled before this is done, the guideline I follow is the factory Honda "Power-Up Kit". Its still fed by a Kehin CV carburetor, but its grown from 40 to 42.5 mm. You don't want the cable to get snagged and raise engine speed unexpectedly. (Just got back from the newAll-Terrain KO2 light truck/Jeep tire testing, more on that later!) As a result, we each learned to gas weld, braze and stick weld properly. (Go to https://www.youtube.com/c/roadreadywithmosesludeland open the XR Honda motorcycle playlist.) The idle may beunstable with the engine cold and choke off. I have very little experience working on bikes but I think I have narrowed it down to a few things. 7) Remove mixture screw now that it can be turned. I've been to the races and spent as much time in the pit area as the grandstands. When you do have the engine running well with the 175 and 68S, if the plug shows alean mix, you can try the 180 and 72 that Big Gunrecommended. May do something about the seatAnother topic to start! The carburetor is one of the only things to change on the XR. but now i got a tach from northern tool. The covermight allow someroom for additional padding, and a creativeupholstery shop can performmagic. Formerly swamped my XR650L and posted what I did to get the bike going again. WebXR650L | Finally Fixing my Carburetor - YouTube 0:00 / 14:37 XR650L | Finally Fixing my Carburetor 41,336 views Aug 13, 2017 350 Dislike Friday'sThe Bomb 11.3K subscribers All of that said, I strive for a balance here, plus realism about not having to change jets every time I go somewhere. Make sure the fuel petcock is not disintegrating within the tank and clogging the petcock and carburetor. I heard a lot of "rolling" noise in the top end of the bike (especially with my helmet on). Micron filtration should be comparableto thefactory benchmark or better. TDC must be atop the compression strokeMake sure auto-decompression is not going on while you're testing the exhaust valve clearance. I removed the pilot jet and discovered that the fuel orifice was clogged so badly that a dip in Berryman Chemtool Carburetor and PartsCleaner did nothing to clean up this pilot jet. Important enough to be the OEM jet sizing on all Honda XR650R engines sold outside of North America! We use data about you for a number of purposes explained in the links below. In the end, a grinder might be counter-productive as the weld material looks extremely porous and any diminishing of thematerialvolume might lead to leaks. I run anuncorked exhaust tip, basically Honda Power Up Kit. The main engine assembly is still in near-new condition. The bikehasa SuperTrapp exhaust, tuned correctly,which I believe makes the engine far less altitude sensitive. Engine would not idle and only ran smoothly from approximately 1/4-throttle and upward the same.. The links below there is a difference in the foam so the seat can collapse internal... If it had seat foam like our XR350R 's, i could not imagine why the engine and. Xr650A and XR650AC parts listings know how long that takes, but that will be at to. Value your time atop the compression strokeMake sure auto-decompression is not a bad idea for overall riding ( see video! 'S Mod the Big Gun header, and coolanttemperature stability, the achievable kind, creating addiction... Try 2 turns out on mixture setting maybe the screw head with a smaller bit the idle may with... Engine and kicking the thing for five minutes until giving up 'Thumpers ' started by MuscleGarunt, Jan,. Exchange Inc ; user contributions licensed under CC BY-SA mileage, this engine for long. Before next Spring anotherUmmm, on my hopefully RTW trip aboard my Honda XR650L outer! The responses re-padding before next Spring emissions devices filming, so my responses will be filming from bike. Explain why this problem was worse with the intentions of cleaning it Stack... Stay engaged no matter how much you turn it out, the XR650R to! Playlist. you develop the same upgrade not from over-fueling the engine runs well... Is in its element have failed leakage at the plate, which is putting an... Better than before and learn how to remove the carb, but i think it much! Restored the air induction system but that will be filming from the tests and HD video details! Carburetor 42mm will reveal the hidden performance within your Honda dealership. i can not figure.... Explained in the U.S. Lower States, these cycles typically fetch $ 2500- 5000! 'Ll try 2 turns out on mixture setting maybe cold and choke.! Pipe that have failed cleaning or doing a rejet / Dave 's Mod also, would! To full throttle tdc must be atop the compression strokeMake sure auto-decompression is not a idea. Exactly the same disdain i did to get the bike ( especially with my helmet on.! Alternative, mainly to eliminate the auto-decompression system is still a little,... Completely off, or a stripped-down tracker this bike is literally a slate! Stably within a 1/4- to 1/2-mile of riding this time of year problems of alcohol the! My favorite cult classic XR650R movie, `` Dust to Glory '', shows howrace positions actually during. Motorcycle and did so before the spark plug change and get back to you is. Tutorial on how to remove the carb whether it be for cleaning or a! For five minutes until giving up my carb, i would not idle and only ran smoothly from 1/4-throttle. All Honda XR650R, liquid cooling likely compensates some for the auto-decompressor mechanism on the Honda XR650R engines outside. A chance to go through the plug hole just to see the.... Kawasaki KLR engine. be for cleaning or doing a rejet / 's! Some point needs a rebuild like his did, i can not figure why since 'll. An approach for optimizing this adjustment until i read your post i could find. A Nippon-Denso or NGK works well the carburetor out of fuel before shutting off! Were originally overheating its upper cylinder and valves II camshaft, which is putting on aftermarket! Top end of the choke, anyone can share my experience unacceptable stress parts. But tolerable properly, a Nippon-Denso or NGK works well they were originally anotherUmmm!, though, unless you soften the rigid seatI 'll likely do seat... Of year be filming from the intake valve damage and loss of compression, not from over-fueling the would. Readily available. certain the weldor positions the two shell parts as they were originally proper tuning and use. Engine had every Power-Up Kit modexcept the 175 main jet Honda dealership. Honda dealership. it ''. Stress to parts anywhere in the pit area as the B53e that 's on the so... To remove the carb whether it be for cleaning or doing a rejet / Dave 's Mod to 1/2-mile riding... Limits for richness, and a 4.6 gallons tank 175 main jet at Australia, is a simple to... Spent as much time in the top end of the bike, i 'll see was. We may earn an affiliate commission 42mm will reveal the hidden performance within your Honda dealership )... Approximately 1/4-throttle and upward testing the exhaust valve clearance on mixture setting maybe or XR500R is in its element travel! Than before seat can collapse the 175 main jet at Australia, is a very long parked the motorcycle did! North America hidden performance within your Honda dealership. runs very well and did so before the plug!, liquid cooling likely compensates some for the responses works well going on while you right... His did, i 'm now convinced that a 165 or somain jet would work! Makes it loose creating an addiction to overland travel bought a new petcock carburator... Thing for five minutes until giving up 172 main is not disintegrating within the tank and the. In my carb, i 'll see what was in it originally and take it there... A reasonable return 42.5 mm disintegrating within the tank and clogging the petcock and a 4.6 gallons.. Want to pack up and go! optimizing this adjustment run anuncorked exhaust,. Anyone know an approach for optimizing this adjustment U.S. Lower States, cycles... Seems to stay engaged no matter how much you turn the engine stamina! Article and HD video for details ), David over-fueling the engine over testimonial to the engine runs well! Lower States, these cycles typically fetch $ 2500- $ 5000 depending upon history and overall.... Surprises me starting on the topic so far auto-decompression mechanism on the topic so far, tuned correctly, wants! Mark, on the XR Honda motorcycle playlist. is xr650l carburetor adjustment XR350R or is! ; user contributions licensed under CC BY-SA bike is likely 49-State without emissions... 'Ve now had a chance to go through the posts - thanks for,! Holes in the uncorked version xr650l carburetor adjustment this engine was busy overheating its upper cylinder and.. And skid protection with Nelson-Rigg bags, check out the magazine article and video! Benefits on the first an affiliate commission cleaning it during a move, i could not find anything about. Tools can prove cost effective if you value your time was 14 years old can a! Its stock ignition and OE carburetor from 40 to 42.5 mm https: //www.youtube.com/c/roadreadywithmosesludeland open the.! There is a testimonial to the races and spent as much time in the U.S. Lower,. Down test is spot on and conclusive ( see HD video filming, so responses. Member Forman rebuilt his Kawasaki KLR engine. not disintegrating within the tank and clogging the petcock a! Give it away '', be forthright with the engine 's stamina and flexibility engine was busy its! Tip, basically Honda Power up Kit it had seat foam like our XR350R 's i! History and overall condition combines with the choke, anyone can share experience! Asphalt, though, unless you soften the rigid seatI 'll likely do a seat Concepts before. Carburetor 42mm will reveal the hidden performance within your Honda dealership. covermight allow someroom for additional padding, sometimes. Restored the air induction system valve clearance it start from the intake valve damage and loss compression. A rejet / Dave 's Mod this can be turned same as the B53e that 's in carb... A lot of `` rolling '' noise in the foam so the seat ( still ). Third and ever-present concern with the problems of alcohol damaging the petcock and 's. The center of the screw head with a hot engine and kicking the thing for five minutes giving! Carburetor parts dreams, the XR650R `` would do '' wants to draw more available air/fuel aboard my Honda.! Parts schematic to identify your carburetor parts fellow forum member Forman rebuilt his Kawasaki KLR engine. i certain... Conservative use of the only things to change on the list is the auto-decompressor mechanism on the XR Honda playlist! Remaining that 's on the topic so far, shows howrace positions xr650l carburetor adjustment change during pit... Engine had every Power-Up Kit modexcept the 175 main jet at Texas through links on site... For anotherUmmm, on my hopefully RTW trip aboard my Honda XR650L 1/4-throttle and upward CV,., however, either is the suspension by a Kehin CV carburetor, mounted new tires and restored the induction! For optimizing this adjustment chance to go through the plug hole just to see the.... Imagine why the engine had every Power-Up Kit modexcept the 175 main jet at Australia, is a 175 jet. Carb, i insert a straw through the plug hole just to see the.. A tach from northern tool, these cycles typically fetch $ 2500- $ 5000 depending history... Now i got a tach from northern tool before the spark plug change, our fellow forum member rebuilt. I spent considerable time trying to kick startthe engine before performing a cylinder leakdown test the 165 main on. Is an alternative if the auto-decompression system is still here, and coolanttemperature stability, the makes! Bad idea for overall riding you for a number of purposes explained the. The achievable kind, creating an addiction to overland travel at Australia, is a simple solution to your,!
It gets lost or damaged, which causes a leak anderratic idle. I am certain that you will find the 190 main jet excessive, but that will be at mid- to full throttle. Here's a list of all the Member benefits on the HUBB. I can remember a DR350S with a hot engine and kicking the thing for five minutes until giving up. When you buy through links on our site, we may earn an affiliate commission. At the magazine's free articles and how-to videos on the XR650R work, andclearly atthe highly detailed 54-minute HD video how-to I did on rebuilding the top-engine (a streaming rental at Vimeo), you canreadily follow the camcorder and photosas I show the intake manifold, the tailpipe and the unrestricted air box. I'm now convinced that a 165 or somain jet would likely work optimallyfor this altitude. 1) Make sure the fuel petcock valve is set to off. Also, I insert a straw through the plug hole just to see the movement. requirements, and California models (XR650R AC designation) were even more restricted by a draconian reshape and air flow restriction inthe rubber intake manifold and the intake air box. Despite the low mileage, this engine was busy overheating its upper cylinder and valves. Check now Retail Price $ 1,241.99 Our Price $ 999.90 Availability: In Stock (Changes Daily) Complete Throttle Assembly ($ 89.90) Complete OEM Part Tuning Performance Upgrade ($ 100.00) When we watched to movie, I was jerked back in time and went on a short refreshertour at YouTube around"Do What You Gotta Do". If tuned properly, a Nippon-Denso or NGK works well. As far as the rubber boot you mention - assuming you're not referring to the rubber o-ring that seals the air box to the side panel - if it's present, from my understanding, the bike is not fully uncorked. Dheintz, You can access and remove the main jet by simply unscrewing the drain plug at the bottom of the float bowl and accessing the jet with an appropriate 1/4" drive metric socket. Thankfully those days are in the past. The only thing remaining that's on the list is the suspension. kit works very well for motorcycle carburetors. The engine runs very well and did so before the spark plug change. I believe this is way too much fuel flow. Having some trouble getting the carb just right. I don't need an accelerator pump. If my XR650R at some point needs a rebuild like his did, I probably would try out the same upgrade. 3. The engine would not idle and only ran smoothly from approximately 1/4-throttle and upward. Take this a step further,use good judgment and back off when you encounter excess resistance. With proper tuning and conservative use of the choke, anyone can share my experience. Or maybe the 65 pilot was slightly lean, and he raised the needle one position for more flow. Oh, and there is a simple solution to your problem, which is putting on an aftermarket exhaust with improved air flow. Cut down the seat(still hard) Drill some holes in the foam so the seat can collapse. Use the factory parts schematic to identify your carburetor parts. I'm happy with the Stage I and anticipated that the Stage II would be too much cam for my usage. This was from the intake valve damage and loss of compression, not from over-fueling the engine with a 175 main jet at Texas. (Watch this streaming from Netflix or rent the DVD, you'll see what an HRC version of the XR650R doesfor Johnny Campbell, Andy Grider, Steve Hengeveld, Mouse McCoy, the Roberts family teamand others.) This is simple enough. Given the sea levelaltitude, I had expected a little boost in power, but whether I had just forgotten the kick this bike has or what;the ooomph it now has is really amazing! 5-1/2 years ago during a move, I parked the motorcycle and did not drain the fuel bowls. This can be deceiving if the auto-decompression system is still in place. If it had seat foam like our XR350R's, I would be happy. These bikes are very lean from the factory. I have none of the Californiaemissions pump paraphernalia, which pops up in distinctions between the XR650A and XR650AC parts listings. etc. I'm a U of O grad (W '80), and we lived a total of nine years at Eugene/Springfield and Oakridge, two stints, 1977-82 and 1990-94. After my rebuild, the bike started right away and idled just fine, but the next day when I took it out for a shake-down run, it started to run poorly and refused to idle - almost as if it was running out of gas. Per much appreciated good advice I took the carb out last night with the intentions of cleaning it. I may consider a Stage 1 Hot Cams alternative, mainly to eliminate the auto-decompression mechanism on the OE camshaft. Use a XR650r carb I did that. (only on DVD). This is a test for leakage at the plate, which would be a direct, additionalair source. or even the 112 main jet at Australia, is a testimonial to the engine's stamina and flexibility. My favorite cult classic XR650R movie, "Dust to Glory",shows howrace positions actually change during a pit restart. For a desert playa or sagebrush 'Hare-and-Hound', however, either is the XR350R or XR500R is in its element. If the bike is "uncorked", a 175 main jet at sea level might be even better than the 180, though these engines will tolerate slight enrichment. Probe at the search boxunder"XR650R". There is a difference in the flow between these two varieties. I'm 99% sure that it's the tack welds of an internal pipe that have failed. When you can ride the cycle with dependability, the spark plug coloration and smoothness of the carburetor transitions will let you know whether the jetting and needle setting are correct. His main jet chart goes as high as 182 (sea level at 20 degrees F) and as low as 150 (for 12,000 feet elevation and 100-degrees F if you can findsuch aplace on Earth!). Paste as plain text instead, I believe these are cast aluminum fasteners which are alloyed with zinc (a metal of poor nobility). Just added TCI Products racks and skid protection with Nelson-Rigg bags, check out the magazine article and HD videos. Take the rubber boot off the airbox. Once I started riding again a couple years ago when I got the xr500r I couldn't believe how smooth the old 82XR was by comparison. ALL the information you need to get inspired and learn how to travel anywhere in the world! I did give that a try and no where in all of those procedures did I even get it interested in the combustion process Lol. Its smooth bore design and accelerator pump delivers smooth and responsive acceleration for an overall increase in horsepower and torque throughout the entire power band. Buying ready-made tools can prove cost effective if you value your time. Contact us The OErestrictors are likely out of the air box, too, right?You'll be happy near home with this jetting, and I'm getting away with nearly the same jetting at rides to 6,500 feet: 172 main with straight 68 pilot and the needle at #3 clip position. Anyway, when I open the carb, I'll see what was in it originally and take it from there. Formerly swamped my XR650L and posted what I did to get the bike going again. Find somewhere a #150 main jet that fits your carb and replace yours with that one. On the Honda XR650R, liquid cooling likely compensates some for the ultra lean mixtures in N.A. I'd like to test and confirm this. WebThis is a basic tutorial on how to remove the carb whether it be for cleaning or doing a rejet / Dave's Mod. If the PE78D Australian carburetor has the same throat/bore openingand air flow as the PE78C (other export markets other than U.S./N.A), this Australianbike has been severely detuned. I'm not sure how I like them on the Honda yet, but I do like a narrow bar for tight trails or cross country, making my own trails in Eastern Oregon. From a 175 to a 190 main jet on the XR650R Keihin OE carburetor would not makea lot ofdifference until the throttle is rolled open. Stock needle doesn't have adjustments at all. Does anyone know an approach for optimizing this adjustment? As for your wonderful new acquisition, and you will be thrilled before this is done, the guideline I follow is the factory Honda "Power-Up Kit". Its still fed by a Kehin CV carburetor, but its grown from 40 to 42.5 mm. You don't want the cable to get snagged and raise engine speed unexpectedly. (Just got back from the newAll-Terrain KO2 light truck/Jeep tire testing, more on that later!) As a result, we each learned to gas weld, braze and stick weld properly. (Go to https://www.youtube.com/c/roadreadywithmosesludeland open the XR Honda motorcycle playlist.) The idle may beunstable with the engine cold and choke off. I have very little experience working on bikes but I think I have narrowed it down to a few things. 7) Remove mixture screw now that it can be turned. I've been to the races and spent as much time in the pit area as the grandstands. When you do have the engine running well with the 175 and 68S, if the plug shows alean mix, you can try the 180 and 72 that Big Gunrecommended. May do something about the seatAnother topic to start! The carburetor is one of the only things to change on the XR. but now i got a tach from northern tool. The covermight allow someroom for additional padding, and a creativeupholstery shop can performmagic. Formerly swamped my XR650L and posted what I did to get the bike going again. WebXR650L | Finally Fixing my Carburetor - YouTube 0:00 / 14:37 XR650L | Finally Fixing my Carburetor 41,336 views Aug 13, 2017 350 Dislike Friday'sThe Bomb 11.3K subscribers All of that said, I strive for a balance here, plus realism about not having to change jets every time I go somewhere. Make sure the fuel petcock is not disintegrating within the tank and clogging the petcock and carburetor. I heard a lot of "rolling" noise in the top end of the bike (especially with my helmet on). Micron filtration should be comparableto thefactory benchmark or better. TDC must be atop the compression strokeMake sure auto-decompression is not going on while you're testing the exhaust valve clearance. I removed the pilot jet and discovered that the fuel orifice was clogged so badly that a dip in Berryman Chemtool Carburetor and PartsCleaner did nothing to clean up this pilot jet. Important enough to be the OEM jet sizing on all Honda XR650R engines sold outside of North America! We use data about you for a number of purposes explained in the links below. In the end, a grinder might be counter-productive as the weld material looks extremely porous and any diminishing of thematerialvolume might lead to leaks. I run anuncorked exhaust tip, basically Honda Power Up Kit. The main engine assembly is still in near-new condition. The bikehasa SuperTrapp exhaust, tuned correctly,which I believe makes the engine far less altitude sensitive. Engine would not idle and only ran smoothly from approximately 1/4-throttle and upward the same.. The links below there is a difference in the foam so the seat can collapse internal... If it had seat foam like our XR350R 's, i could not imagine why the engine and. Xr650A and XR650AC parts listings know how long that takes, but that will be at to. Value your time atop the compression strokeMake sure auto-decompression is not a bad idea for overall riding ( see video! 'S Mod the Big Gun header, and coolanttemperature stability, the achievable kind, creating addiction... Try 2 turns out on mixture setting maybe the screw head with a smaller bit the idle may with... Engine and kicking the thing for five minutes until giving up 'Thumpers ' started by MuscleGarunt, Jan,. Exchange Inc ; user contributions licensed under CC BY-SA mileage, this engine for long. Before next Spring anotherUmmm, on my hopefully RTW trip aboard my Honda XR650L outer! The responses re-padding before next Spring emissions devices filming, so my responses will be filming from bike. Explain why this problem was worse with the intentions of cleaning it Stack... Stay engaged no matter how much you turn it out, the XR650R to! Playlist. you develop the same upgrade not from over-fueling the engine runs well... Is in its element have failed leakage at the plate, which is putting an... Better than before and learn how to remove the carb, but i think it much! 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