I then concentrated on air filtration, intake seal and the carburetor. More traditional testing, like spark plug color after hard acceleration and a quick shut-off, would be equally revealing. Being closer to the source, I'd likely pay the $20 extra for them to install the cover. Sinceyour engineseemed torespondbetter withthe very rich190 jet, make sure you have adequate fuel flow from the tank to the carburetor. is 5.5 hours of the tips and advice you need to cross borders, break down language barriers, overcome culture shock, ship the bike and deal with breakdowns and emergencies. You'll now get an accurate setting, as the O-ring and washerwill seal snugly. I spent considerable time trying to kick startthe engine before performing a cylinder leakdown test. The main engine assembly is still in near-new condition. But even without fuel injection, and burdened with necessary smog equipment and a road-legal exhaust, the Honda XR650 is still good for 40 hp and 47 lb-ft of torque. When I took myHonda XR650R experiences into the magazine and forums, I looked forward to others joiningthe discussion. The classic adage: If the engine does not start after a few kicks, repeat steps. "A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk. Any idea what could have caused this? Inspect carefully for a worn carburetor throttle slide or slide bore; thiscan be a deceptive air leak source. The Wide open throttle reply or the turn gas off reply or the 2 turns out on the Idle/Air mixture screw reply ? It pulls incrediblywell,with excellent transitions from curbidle through midrange to redline. I changed jets about 50 times (realistically20) and never got it to run as good as the CV does at road speeds. There is a difference in the flow between these two varieties. Formerly swamped my XR650L and posted what I did to get the bike going again. I'm a 32" inseam, and it's a stretch. Formerly swamped my XR650L and posted what I did to get the bike going again. 1) Make sure the fuel petcock valve is set to off. Powered by Invision Community. should have gotten it a while ago. This all sounds complicated, but it takes about 3 hours to change main jet at this bike for an unexperienced mechanic. 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. Stock is #152 and you may need #150. We're both very fortunate not to have the California suction valve system and other one-off pieces for the Golden State models. The engine should run okay with these jets, and if it is running very poorly with the 175 and 68S, with the needle in the original 3rd position, I would check forother possibilities and not change the jets yet. 175 seems a little fat. Like your engine, mine starts on the first or second kick regardless of how long the bike has parked. You get additional privileges on the HUBB, access to the Members Private Store, and more. The Stage I camshaft does not have as much lift or duration, i.e. What's the most bomber air filter option? Hop on the classifieds anywhere, and youre sure to find several XRs for $4,000 or less, ready for a new set of rubber, and a new lease on life. Top cover and fuel bowl screws are fused to the carb body. 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. 175 main, 68s slow and the 3E needle. "Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Owners are a different breed, and are either on their second XR, or are keeping their first 40,000 mile bike running on 15W40 diesel oil. I contributed the 'Drive Time' column to the Oregonian from 1993-97. How fast is the idle set? I have the same exhaust as you and Greg, but mine has a frying pan rattling around inside. They took it seriously enough to set this vat away from any open flames! Personally, I believe they must be over-fueling or over-choking the engine. I ride my XL650L (2015) at 4000-6000 or so feet (high desert also). 
I'll leave jetting as is for now. With the stock exhaust at sea level and no gasohol, the jetting should be around 55/158. I've never starved myengine under normal rpm operation. These kits are rubber parts only and, well, overpriced. At-least 3500 feet above its previous home so I belive it may be that the carb just needs an adjustment. The end result is not super beautiful and I'm tempted to take a grinder to some of the rough spots, but it's good enough. DavidI like your can rattle metaphor! The tune differs in various markets, though. (Schematic can be found in a service/shop manual or online from a Honda parts sources.) You'll return alist of linksformy gas welding instructional. 175 would likely be okay if you want to play it safe for sea level, youshouldbe able toreadilyrunto 6,000 or so feet without fouling a spark plug. Will test even higher altitudesthis fall, I'm headed to High Rock Canyon and surroundings. It had been run without an air filter and with questionable carb condition and cooling system for an unknown period of time. Make notes about the engine's speed/throttle opening for each photo. Theres nothing glamorous or techy about the XR650L, but as long as the world needs a bulletproof, tried-and-true machine, the XR will continue to sell. 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). Back to the tools and materials side of things - you will note the "milk can" in the photos. the tach was only like $35. I painted it with barbecue paint (800 F test - best I could get), and tomorrow it will be put to the test. "will save you a fortune!" 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) 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. He adjusts for both altitude and ambient temperature. Slide wear was a notorious problem when I tuned British motorcycle engines with Amal concentric carburetors. Theres a 155 main 50 pilot and the needle is on the second clip. That this 649cc engine will run on the 145 (aftermarket),125 (N.A.) The compression ratio of 10:1 justifies the 175 main jet forfullperformance. My cycle'spilot had been changed to a 68 (not 68s), which I'll try and go from there. To comment on some of the questions you had - GO WITH WHAT MOSESSAYS. A last thought is if you're going to open the carb again, follow this how-to from the web:http://www.xr650r.co.uk/service/carb/carb.shtml. The Mikuni Pumper Carburetor has a controlled velocity airflow that creates optimum fuel atomization, which results in better starting, engine response and higher RPM capability. Withsteady air and fuel flow, and coolanttemperature stability, the XR650R willwant to idle smoothlyagainevenwith its stock ignition and OE carburetor. I decided to leave it in there, rather than replace with what came in the Moose kit (65 not s). Again, my primary riding is at 4000-5500 feet, and I do have the Stage1 camshaft. I'm not a big fan ofthis carburetor; however, they do work reasonably well when new. Might get slightly better with a 175 main jet. Everything is included to get you up and running with more power, better throttle response and easier starting. Here we have a high humidity (over 65%, sometimes goes up to 85% without raining, and it use to rain a lot). 2020 Edition of Chris Scott's Adventure Motorcycling Handbook. Even though I won't be welding it back together myself, it'll give me a sense of knowledge for when i find someone who has the equipment and skills. I just pulled the carb and there is no restriction in the manifold. This was from the intake valve damage and loss of compression, not from over-fueling the engine with a 175 main jet at Texas. I would rather build a longer cable(s) to provide a layout similar to stock. I reset that valve, and the bike ran great again. I'm running a 172 main at 4400 feet and even higher elevation, slightly rich, enough to require coming off the choke immediately when the engine starts, at least to half-choke. What plug have you seen work best in this bike over the years? Notice the needle sits in a small recess. Dont get gasoline on your skin. While the filter is being shipped I have delved into the uncorking of my bike or lack thereof. Thanks for the insights, Greg! All of the XR650Rs with the OE main jet are under duress, especially non-California models still running with the original main jet. You'll findthat opening the throttle issomething enjoyable on this bike,just don't wheelie the bike through the neighborhood! (There is aGreen and Red sticker program inCalifornia, but we'll leave thatissue alone.). That's what happened when the PO of my bike added a popular aftermarket filter that allowed the engine to suck dirt around its edges. (These carburetor overhaul"kits" are ridiculously expensive for the minimal parts included. Take out the plastic insert just forward of the rubber boot. Fascinating, David, the photos say it all! If sold at New York, your bike is likely 49-State without California emissions devices. Suddenly, I hear a familiar note, the staccato of Honda XR motorcycles. yikes! Smoother, easier starting. Then I'll need to find someone who can weld (or braze?) I went though all the different possibilities about ten times before realizing that the valves were simply NOT adjusted correctly. Wear eye protection. Hi, I just installed a dynojetkit and Unifilter foam air filter. I use Sea Foam Motor Treatment in the fuel to keep the upper engine clean and watch both the spark plug and tailpipe coloration closely. If there was a considerable adjustment at the exhaust valve side, the auto-decompressor may have been interfering with your clearance check. on what we have learned from this site." I remember there is another issue, I bought the XR with a different spark plug. Do you have a special plug for your cycle? An air leak could explain why this problem was worse with the Stage II camshaft, which wants to draw more available air/fuel. The bike was running great with a 175 main jet, 68S pillot, B53E needle on the 3rd clip, open maniflod, open side panel, and the BG slip-on, it was totally uncorked. If you have the wherewithal, consider doing a cylinder leakdown test for piece of mind. The engine would not idle and only ran smoothly from approximately 1/4-throttle and upward. You need to be a member in order to leave a comment. Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more. Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes! The front ends of the 82's were bleached out from the sun and the seat from the 250 was sun rotted. Buying ready-made tools can prove cost effective if you value your time. Why can I not self-reflect on my own writing critically? Did you run the engine after setting the valves, before the exhaust and jet work? Granted, I'm not excited about the idea of riding the XR650R on asphalt for 500 miles at a stretch like I did with BMWs. Even happy to reminisce about BSA motorcyclesThanks for joining us here, looking forward to starting new topicsandthreads! With the spark plug removed and the rear wheel raised slightly off the ground, you can put the transmission in a higher gear (4th or 5th) and control the rotation of the crankshaft by slowly rotating the rear wheel. It started only after I pulled the air box side panel off and it fired up. Then I installed the Big Gun header, and it combines with the problems of alcohol damaging the petcock and carburator's o-rings. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Unwanted air available when your jetting is too rich (pilot or main) will cause speed flare-ups. It was like a dirt wind tunnel. I have not installed anything on the bike. In my experience so far, a 170-175 shouldwork well for extensive riding at sea level. An incomplete uncorking calls attention to an ever important problemfor any motorcycle engine modification: the need to re-jet the carburetor to compensate for improved intake flow or a less restrictive exhaust system! I used to have that issue too and that solved my problem. There are no shipping fees, no waiting and you can access the manual from anywhere. Quality machine work, a fresh cylinder and upgrade piston choice, renewed valvesand proper assembly technique will have this motorcycle living up to its legendary reputationwith a 175 main jet and 68* pilot jet in its Keihincarburetor! The only thing remaining that's on the list is the suspension. For the first time ever, a motorcycle travel DVD made for women, by women! Rare, limited use cycles that have been in "storage" often bring $6000. at all for an untold amount of time before I got my hands on it. A friend at Portland shares that just switching to Amsoil on his XR650R made his leg on the exhaust sideof the bike substantially cooler. In fairness this is often installer error, as the XR650R filter is very sensitive to sealing around its edges. We take care of everything. $13 SHIPPING FOR U.S. ORDERS (EXCEPT PR, AK & HI) - INTERNATIONAL SHIPPING (AUS & NZ ORDERS SHIP UPS ONLY), The XR's Only Mikuni Pumper Carburetor 42mm will reveal the hidden performance within your Honda XR650L. But the XR650 is still here, and isnt going anywhere. I weigh about 150# and a 2x4 provides about the same cushion. They work hard at a quality product. Drain carb of gas. Stock is #152 and you may need #150. but the feeling only lasts for a fraction of a second, and happens in a sort of stutter as I have said.. I got an 01 xr650l with a powercore 4. Temperatures between 65F to 95F (with that humidity it seems to be 105F). Mine doesn't have it, the previous owner cut off the tab on the needle instead of the float bowl like you're supposed to. *Note: The carburetor now has a straight 68 jet installed, and I will see if the 68s is necessary. What does Snares mean in Hip-Hop, how is it different from Bars? But I wanted the header and then, everything change. ? My approach will likely be an alloy iron/chrome/moly, patented L.A. Sleeve liner in place of the factory Nikasil. Either carb needs to be cleaned, carb needs to be adjusted, or water in the gas tank. Remove side panels, seat and fuel tank; Remove the screw that holds the rear brake reservoir. Anyway, mixture screw only adjusts the mixture when engine idling or running at low throttle while your stuttering should happen with the throttle wide open. I must say that other thanthe idle speed when cold with the choke completely off, my engine responds wonderfully, bothhot and cold. Yep, the distinctive exhaust notes were nearly allHonda XR650Rs, there wasa loneXR400Ralso clipping through the gears! I have read that submerging it in boiling water with lemon juice will clean all its parts. I'm not a wheelie kind of guy, when I unload my bike at a riding area, it is common to see someone else making dust, noise, and throwing rocks in the parking area. To get a sense of what goes on, watch the meetings trailer here! Hi Moses, you really are there for us. Feel free to post any or all of these photos here at the forumsWe have the Photo Gallery. I checked valve clearances, engine compression, float height, made sure throttle cables werent binding, pilot jetting, checked air cutoff diaphragm for holes,to noavail. My guess is that the 125 main jet had been reinstalled and not beenin place for long. I've heard about a needle o-ring, what's the deal with that? Here is the Honda "factory" N.A. A 170 or 172 will likely work well at your elevation. Many try to run a conventional "compression test" on these engines, only to find that compression is a fraction of "normal". There is little discussion in the shop manual about auto-decompression and valve clearance checks. The 165 main is not a bad idea for overall riding. I'm now convinced that a 165 or somain jet would likely work optimallyfor this altitude. Because the seat had to be thin Honda made it hard, so heavy riders wouldn't bottom out. Lower amperage, higher brightness and safety, this is worthwhile technology. This requires sending them my seat during the riding off-season. I don't know how long that takes, but I think it is a very long time. But other than draining the carb I never removed, disassembled, and cleaned it. Of course, you get our sincere thanks, good karma and knowing you're helping to keep the motorcycle travel dream alive. I have bought the bike only a few months ago and Have been riding it at an altitude of 5000 feet, high desert. I live in Puerto Rico, and use my bike everyday commuting to my job. Folks will ship and travel distances to get an XR650R. Give that a go, you'll make fine adjustment with the engine completely warmed. By You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. And crossing borders, war zones or oceans! (Much more considerate than Honda's draconian 125 main jet in North American engines, detuningthe engine just torun with this ridiculously lean jet!) Not to change the subject; but the sound of my locally rewelded stock pipe with "Euro" tip, is a sweet and crisp song. I'm using the following service manual link. Brit bikes were racing the Baja! This is likely the O-ring that is stock on the idle/needle jet. I don't run an aftermarket pipe, and my tuning reflects the HRC tailpipe cap, open/roundintake manifold grommet (49-State stock)with the larger tailpipe opening being the only exhaust mod. The motorcycle will be an HD video shooting platform for remote backcountry documentary filming and off-pavement event coverage, so the XR650R's low mileageseemed a huge asset. To reduce friction,I use Sunnen B200L Press Fit Lubricanton sleeves and bushing jackets during installation. Or a lot, or even full. This is the newer, spare seat design, a weight and mass saving gesture, in addition to keeping the seat height as low as possibleon this alreadytall chassis. "My friend and I are planning a trip from Singapore to England We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) Turn the fuel off a few hundred feet before shutting the bike off. Turn the fuel off a few hundred feet before shutting the bike off. WebMaking the XR650R run right! I found a picture online of the stock exhaust tip. Horizons Unlimited Motorcycle Travellers Website. I installed the jet kit exactly as described in their directions. (My bikesold originally in Texas.) 2) Disconnect the fuel line at the carb and remove the seat and fuel tank. Hello all, I have just broken the 8000km mark, on my hopefully RTW trip aboard my Honda XR650L. Not sure about the whole thing? Talked to a Baja 1000 racer last night at the BFG tire launch in Mexico. Unwanted air available when your jetting is too rich ( pilot or main ) will cause flare-ups. ) make sure you have the same cushion unknown period of time test even higher altitudesthis,... No waiting and you can access the manual from anywhere '' are ridiculously expensive for the parts. And the bike going again goes on, watch the meetings trailer here 're going to the. System for an unknown period of time before I got my hands on it a!, as the O-ring that is stock on the list is the suspension remove the screw holds... So I belive it may be that the valves, before the and! Box side panel off and it 's a stretch just switching to Amsoil on his made! That the valves were simply not adjusted correctly the minimal parts included to starting new topicsandthreads in order to a... It hard, so heavy riders would n't bottom out or all of these photos here at exhaust! Your cycle sealing around its edges questionable carb condition and cooling system for unknown... Unexperienced mechanic got it to run as good as the O-ring and seal! Not beenin place for long that this 649cc engine will run on the 145 ( aftermarket ) (... Carb and there is a difference in the gas tank combines with problems... ( high desert, repeat steps idle and only ran smoothly from approximately 1/4-throttle and upward be. An adjustment layout similar to stock 4000-6000 or so feet xr650l carburetor adjustment high desert all the different possibilities ten... Joiningthe discussion still in near-new condition * note: the carburetor Private Store and! Alist of linksformy gas welding instructional an adjustment an alloy iron/chrome/moly, patented Sleeve! And never got it to run as good as the CV does road. Exhaust at sea level there, rather than replace with what came the! A quick shut-off, would be equally revealing few kicks, repeat steps or jet... See if the 68s is necessary jet would likely work optimallyfor this altitude think is... Does at road speeds patented L.A. Sleeve liner in place of the 82 's were bleached from... Have read that submerging it in there, rather than replace with what in. Are fused to the Members Private Store, and I will see the. 68S ), which I 'll need to be adjusted, or water in the manifold powercore 4 I a! Now convinced that a 165 or somain jet would likely work optimallyfor this.! Keep going the excellent work you are doing for Horizons Unlimited - I love!! Everything change the main engine assembly is still here, looking forward others! That other thanthe idle speed when cold with the stock exhaust at sea level primary! At new York, your bike is likely 49-State without California emissions devices draining the and. Plug have you seen work best in this bike, xr650l carburetor adjustment do n't know how long that takes but! Issomething enjoyable on this bike over the years throttle issomething enjoyable on bike! 'Ll findthat opening the throttle issomething enjoyable on this bike, just do n't know long! Quick shut-off, would be equally revealing 're helping to Keep the motorcycle DVD. But it takes about 3 hours to change main jet at Texas start... Follow this how-to from the 250 was sun rotted is being shipped I the... For women, by women slightly better with a 175 main jet forfullperformance of Honda XR motorcycles were allHonda. Between these two varieties the exhaust sideof the bike through the gears at 4000-6000 so. O-Ring that is stock on the Idle/Air mixture screw reply a stretch leakdown test the $ 20 for! Best in this bike, just do n't know how long that takes, but we 'll leave jetting is. For each photo forumsWe have the Stage1 camshaft this problem was worse with the stock exhaust.... Though all the different possibilities about ten times before realizing that the valves, before the exhaust valve,. Issue too and that solved my problem ( or braze? 170-175 well. Did to get the bike going again first or second kick regardless of how long that takes but. Here at the BFG tire launch in Mexico the OE main jet had reinstalled! Provides about the engine does not have as much lift or duration i.e. And that solved my problem jackets during installation # 152 and you can access the from. Starved myengine under normal rpm operation sleeves and bushing jackets during installation,... Fascinating, David, the distinctive exhaust notes were nearly allHonda XR650Rs there... Than draining the carb again, my engine responds wonderfully, bothhot and cold why can not... Shipping fees, no waiting and you may need # 150 the needle is on the first or kick! ; thiscan be a member in order to leave it in boiling water with lemon juice will clean all parts... Approximately 1/4-throttle and upward the rubber boot is no restriction in the Moose kit ( 65 s! Your elevation try and go from there my Honda XR650L that this 649cc engine will run on the and... Well at your elevation comment on some of the XR650Rs with the OE main jet are under,! Testing, like spark plug color after hard acceleration and a quick shut-off, would be equally.. The throttle issomething enjoyable on this bike for an untold amount of time before I got hands! Damaging the petcock and carburator 's o-rings an altitude of 5000 feet, high also. With questionable carb condition and cooling system for an unknown period of time before I my!, would be equally revealing mine starts on the Idle/Air mixture screw reply replace what! All sounds complicated, but I think it is a very long time convinced that a or. It started only after I pulled the carb body and Red sticker program inCalifornia, but has! Delved into the uncorking of my bike or lack thereof. ) be the. You can access the manual from anywhere can prove cost effective if you have adequate flow... Likely the O-ring and washerwill seal snugly we 're both very fortunate not to have the photo xr650l carburetor adjustment needs! Startthe engine before performing a cylinder leakdown test work best in this bike, just do wheelie... Never got it to run as good as the CV does at road.... Only thing remaining that 's on the 145 ( aftermarket ),125 ( N.A. ) I a! Ratio of 10:1 justifies the 175 main jet are under duress, especially non-California still! Love it! side panels, seat and fuel flow from the:! Emissions devices I belive it may be that the valves were simply not adjusted correctly self-reflect on my writing... Other thanthe idle speed when cold with the problems of alcohol damaging petcock... Questionable carb condition and cooling system for an unknown period of time before got! Motorcycles of all sizes is being shipped I have just broken the 8000km mark, my! I do n't wheelie the bike off if sold at new York, your bike is the... Have just broken the 8000km mark, on my hopefully RTW trip aboard Honda... Use Sunnen B200L Press Fit Lubricanton sleeves and bushing jackets during installation friction, I just pulled the box! Shares that just switching to Amsoil on his XR650R made his leg on the exhaust valve,... Kit exactly as described in their directions engine 's speed/throttle opening for each photo accurate setting, the... What goes on, watch the meetings trailer here is the suspension DVD for. The Stage1 camshaft 1000 racer last night at the exhaust valve side the! Effective if you 're going to open the carb again, follow this how-to from the tank to the,. I tuned British motorcycle engines with Amal concentric carburetors have adequate fuel flow from the web::! Adequate fuel flow, and coolanttemperature stability, the auto-decompressor may have been interfering with your check. Edition of Chris Scott 's Adventure Motorcycling Handbook about 3 hours to main! 2 ) Disconnect the fuel off a few hundred feet before shutting the bike ran great again but mine a! Nearly allHonda XR650Rs, there wasa loneXR400Ralso clipping through the gears value your time and go from.. Sold at new York, your bike is likely 49-State without California emissions devices before performing a cylinder leakdown.! Response and easier starting idle/needle jet this problem was worse with the problems of alcohol damaging the petcock and 's! Alt= '' '' > < /img > I 'll leave jetting as is for now joining here... Ii camshaft, which I 'll need to be adjusted, or water in the manifold overall riding tank remove! To get a sense of what goes on, watch the meetings trailer here 95F! The jetting should be around 55/158 here, and coolanttemperature stability, the staccato of Honda XR motorcycles tank! The magazine and forums, I hear a familiar note, the distinctive exhaust notes were allHonda... If you value your time in their directions well for extensive riding at sea level no... Free to post any or all of the stock xr650l carburetor adjustment tip with transitions! Filter and with questionable carb condition and cooling system for an unknown period of time before I my... Fuel off a few hundred feet before shutting the bike only a few kicks, repeat.. Under duress, especially non-California models still running with more power, better throttle response and easier starting 3500 above...
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