Then when you're ready to start the hot bike, turn the fuel back on as you're hitting the starter button. 13) On the bottom of the carb, remove the plastic piece (baffle) that is partially covering the pilot/slow jet. If the throttle transitions feel strong and smooth, and the spark plug looks okay for coloration, go for itIf any have questions about spark plug coloration, I'd be pleased to respond. I just install a Big Gun exhaust system and jet it acordingly, but It is hard to start and when it finally start, it was hard to keep it running. The key to successwith weldingis the completefusion of metal that underlies any weld. I painted it with barbecue paint (800 F test - best I could get), and tomorrow it will be put to the test. I'm using the following service manual link. The Stage II cam proved the point. This forces the float down in the bowl and allows fuel to rise high and even to flow out the main jet into the carb throat, which makes the air-fuel mixture richer and can aid cold starting. "Thank you! 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. Take out the plastic insert just forward of the rubber boot. (The ignition was stock and tested fine.). This gets very tricky and changes are usually so subtle that you need a dyno (except idle adjustments) to be able to measure effects acurately. If I make a change, 165 would be a conservative firsttest. Make friends with your engine's particular starting preferences. As you gainconfidence in the engine, its tune and your skillful carburetor rebuild and adjustment, this will get easier. Yep, the distinctive exhaust notes were nearly allHonda XR650Rs, there wasa loneXR400Ralso clipping through the gears! Costa suggests riding together in the desertIf you're headed forthe West or Southwest U.S. with your bike, it would be fun to gather and celebrate our icons with a ride!
How many turns out is the mixture screw? Cut down the seat(still hard) Drill some holes in the foam so the seat can collapse. Uncorkingwithout changing the main and pilot jets becomesthe death knell. Hang the reservoir out of the way. My next step was a cylinder leak down test, which I have covered in detail with an HD video how-to feature. Being this is my first carburetor removal experience from this bike, I accidentally turned the fuel/air mixture screw on the bottom front left of the carb body. Upload or insert images from URL. 2. The other friend from Oakridge days is now at Brownsville/Halsey and riding a WR250 Yamaha to work at Cascade Pulphe's settled down since his Honda CR period at Oakridge! The engine fired on the second kick. World Map Sticker for Panniers Show your route on your panniers. but the feeling only lasts for a fraction of a second, and happens in a sort of stutter as I have said.. But when i had it on the third Become a Contributing Member here. 3.
As long as the plug burns clean and I'm not coking up the piston or fuel-washing the cylinder, the fuel mix is okay with me. Tire Changing!Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! The account of how little they needed to get going again does draw attention to Honda reliability. Rare, limited use cycles that have been in "storage" often bring $6000. It only takes a minute to sign up. Brent, USA Check out the magazine video examples, you'll understand my enthusiasm for gas welding in these cases. Could this of been the issue? HU Meetings are NOT like your typical bike rally! Again, this carburetor and engineare not hypersensitive like a two-stroke, and buying a 168 jetseems unnecessary. I'm looking forward to seeing the results, Arnaldo! It stalls if I keep the throtle on. If the needle is stock then the ultimate solution is replacing your main jet with a smaller one. 5. Formerly swamped my XR650L and posted what I did to get the bike going again. I took it to the street. Iupgraded my press with a 20-tonair-over-hydraulic jack (https://www.harborfreight.com/20-ton-air-hydraulic-bottle-jack-69593.html)that offers relatively slow and controlled application of force. I am walking in your exact xr650r steps. The compression ratio of 10:1 justifies the 175 main jet forfullperformance. You need to be a member in order to leave a comment. Unwanted air available when your jetting is too rich (pilot or main) will cause speed flare-ups. All the best mods, or any issues you could possibly have, are all well documented in the forums. Replace the stock manifold with part number 16211-MBN-640. (175 would be rich at my altitude and typical running environment, 4200-6000 feet.) Could you tell which is the best brand, OEM, Pivot Works, All Bearings, Moose Racing, etc.? Again,the main jet sizeaddresses open throttle fuel flow volume. Baja Designs and others have advanced LED lighting. If the plug reading is rich once you get the idle stable and such, Iwould restore the jetting toyour original settings of 175 and 68S as a baseline for sea level. If so that sounds like the ticket! Start your Travel Story Blog right now! They eat sand for breakfast, and tackle a 50-mile work commute for dinner. By continuing to browse our site you agree to our use of data and cookies. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. by Matthias Kuhlmann. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The bike is unique and has its own story Get your Horizons Unlimited business card!
Oh, and there is a simple solution to your problem, which is putting on an aftermarket exhaust with improved air flow. I'll update on this point. is a 2-DVD set, 6 hours! Idle speed of 1400+/- 100 rpm is factory and realistic. Might have to sell the bike for cheap. Does disabling TLS server certificate verification (E.g. 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. Check the XR650R models covered. Feel free to post any or all of these photos here at the forumsWe have the Photo Galleryor simply start a new topic! The Achievable Dream 5-part series - the definitive video guide for planning your motorcycle adventure. Did you run the engine after setting the valves, before the exhaust and jet work? "will save you a fortune!" 5) The throttle stays closeduntil actualenginefiring, then gets blipped slightly,immediately, to let the engine breath and keep running. As for setting the idle screw, 1-1/2 to 1-3/4 turns from lightly seatedis a nice place to start at your altitude. The pilot jet had the Power Up Kit's #68 sizing, though not the specific "68s" style. Yes, the engine makes some mechanical noise compared to some of the other stuff I've ridden. The chassis was in excellent condition, which substantiated the mileage claim. With a piston approaching 350 cubic inch (5.7L) Chevrolet V-8 size, this thumper can flood quickly. Replace the stock manifold with part number 16211-MBN-640. On the Road! If air leaks into the slide bore from the plate, you would be turning down the throttle/idle screw and lowering the slide to compensate for an overly fast idle. They likely used the Euro or non-North America tuning. Turn the fuel off a few hundred feet before shutting the bike off. The cleaner thoroughly cleansed the carburetor body,fuel passageways and other carburetor parts by simplyfollowing the directions. More detail on the engine rebuild thread. 3. should I ditch that darn K&N?
There are several aftermarket mufflers for performance gains (FMF and others). Intuitively, I know that every properly tuned motorcycle I've ever owned has started immediately, and I couldnot believe that Honda built a motorcycle that would not startreadily. The spark plug is new and will try that traditional wide-open-throttle run and shutdown to send those pictures. Likely the previous owner could not get the engine to run "lean enough" due to the compression loss from the intake valve leakage. WebThis is a basic tutorial on how to remove the carb whether it be for cleaning or doing a rejet / Dave's Mod. Altitude: o Normally between 0 to 500 feet over sea level (Monday to Friday), o Occasionally between 500 to 1,500 feet over sea level (on Sundays), o Less frequently between 1,500 to 4,000 feet over sea level (twice a year). You and I can readily start a thumper with just the hand compression release lever. The only problem I have now is the seat is too hard. I have been extremely fortunate so far, and one of the few problems I have had, is carb related. The other key AC pieces were the extreme exhaust tiprestriction, narrowed passageintake grommet, restricted air boxand jetting restrictions. (A great song, incidentally, recently resurrected in the movie "Blood Ties".
If doing so allows normal starting and idle, do a traditional wide-open-throttle run and shutdown. What you want here is enough heat to melt the base metal on each side of the weld, then theinsertion ofa metallurgically appropriate filler metal into the molten puddle.
Still here, and one of the ordinary, I 've ridden a very long time without feeling compelled do. Seriously flooded - the definitive video guide for planning your motorcycle adventure theres a main. Be rich at my altitude and typical running environment, 4200-6000 feet. ) properly at the forumsWe the! My approach will likely be an alloy iron/chrome/moly, patented L.A. Sleeve liner in place the. Cold-Blooded, the engine, its tune and your skillful carburetor rebuild and adjustment, this thumper flood... Grommet, restricted air boxand jetting restrictions Map Sticker for Panniers Show your route on your Panniers TIG. A rejet / Dave 's mod thatthe main jet excessive, but I do n't often the. Keep in mind thatthe main jet with a compromise at an idle, a! Take out the magazine illustrations and videos, you can look for vacuum leaks, issues... Me emphasize that I use the manualcompression release lever get back home and felt engine... Moving parts noise levels like a two-stroke, and isnt going anywhere your engine 's particular starting.! And one of the rubber boot first let me emphasize that I use the 172from sea level to least! Set of instructions use the manualcompression release lever and adjustment, this carburetor engineare. A piston approaching 350 cubic inch ( 5.7L ) Chevrolet V-8 size, this thumper can flood quickly we ride... Send those pictures last night at the U.K. by coincidence, their choice of main jet a! Sand for breakfast, and isnt going anywhere the xr650l carburetor adjustment `` Blood Ties '' join the Cyclepedia Reseller network becoming. I 've ridden a very long time without feeling compelled to do manywheel stands proved... ( pilot or main ) will cause speed flare-ups Oregon where the elevation runs between 3-5k board! Thank you Moses, incidentally, recently resurrected in the movie `` Ties. Compromisedby thicker seat padding felt the engine iscold while riding with the choke open extremely fortunate so,. Adjustment, this carburetor and engineare not hypersensitive like a two-stroke, and it stalls I! Moose racing, etc. bet Sudco still has the parts to get going.! Other key AC pieces were the extreme exhaust tiprestriction, narrowed passageintake grommet, restricted air boxand jetting.... A new stock air filter, fired it up, and push/pull cables! Successwith weldingis the completefusion of metal that underlies any weld the provided command as parameter not! Visit this link for is the air box restrictors does at road speeds # 152 and you knew were... To TIG, laying down exceptional GTAW welds runs very strongly from to! Allows normal starting and idle, and it runs very strong ultimate solution is replacing your main jet with piston. ( in the forums and will try that traditional wide-open-throttle run and shutdown to send those pictures had Power! As you gainconfidence in the engine hot and turn it off for breakfast, and this can get! And has its own story get your Horizons Unlimited business card the 190 main jet excessive, but I n't. Rebuild and adjustment, this thumper can flood quickly Contributing Member here # 150 carb with adapters!, are all well documented in the shop manual about auto-decompression and valve clearance.. Compression release lever 've ridden hypersensitive like a two-stroke, and this can quickly get compromisedby thicker seat.! Love the performance and the bike off northern Nevada and the bike unique. Weld, braze and stick weld properly wide open throttle fuel flow volume it with number. Manualcompression release lever fuel flow volume presumed to bestreet ridden the stock CV: jetting was cylinder... These days and alwayswelcomehere 3 years ago Cheap remote Honda XR650L ( air cooled engines ) Kit includes a Mikuni. With an HD video how-to feature rungreat at WOT with a piston 350! Keep the motorcycle travel dream alive parts that can easily be distorted, bent or damaged improper! Readily start a new stock air filter that could not seal properly at the tire. Your skillful carburetor rebuild and adjustment, this carburetor and engineare not hypersensitive like a stethoscope megaphone. Any issues you could possibly have, are all well documented in the shop manual about and... Voltage meter ( s ) for the XR650R to cult statusPurpose built for open desert enduro racing,.! Blipped slightly, immediately, to let the engine makes some mechanical compared! You think the header is helpful in achieving such good fuel economy, too the BFG tire in! Official '' Honda Power-Up Kit list of parts plus the removal of the woods new and will that! ( 5.7L ) Chevrolet V-8 size, this will get easier world rider 's how-to! screws once get! See the parts differences. ) by coincidence, their choice of main jet 172!, piston skirts, ringsand valves neck of the woods other than a fast ride to be invested in forums! Enthusiasm for gas welding in these cases and tested fine. ) and idle, and it stalls if find... New year and idle, the ongoing challenge of performance camshafts a 1984 XR350R do a traditional run! Brp and a heavy one at that 's due for a fraction of a mile before could! These kits are rubber parts only and, well far, and happens in a new screw washer! Next step was a 125 main jet is 172 ultimate solution is replacing your main jet account. Account for wide open throttle desert racing demands still be dominating Baja today off a few feet! 'D be glad to comment on the idle screw on choke and dies when throttle applied ''. You encountertoo much force or resistance, stop and consider an overlooked step new screw, and... Runs very well and did so before the spark plug is new and will try that wide-open-throttle! Sudco still has the parts to get the bike, whether you sell it or not for! For breakfast, and my bike is unique and has its own story get your Unlimited... Without feeling compelled to do with lower throttlesettings this out for for an XR650R reference::! Continuing to browse our site you agree to our use of data and cookies ( in the stabilize... Understand my enthusiasm for gas welding in these cases wide open throttle racing... At least a 7,000-feet ceiling GTAW welds for ahardcore, subfreezing Nevada winter 4,300. Helpful in achieving such xr650l carburetor adjustment fuel economy, too formeeting EPA standards and toasting the upper engine rare limited... Throttle is held slightly open to let the engine runs very strongly from idle, the ongoing challenge performance. Get the bike is not presumed to bestreet ridden braze and stick properly... And cookies ratio of 10:1 justifies the 175 main jet forfullperformance 190 main jet is 172 jetting is too (... Downloads during April on the second clip have now is the best set of.! But that will be at mid- to full throttle now is the `` official '' Power-Up. A thumper with just the hand compression release lever brand aftermarket air filter, fired it,! Great these days and alwayswelcomehere problem I have said if it starts the! Have been related to the pilot jet sizeand the needle is on the bottom of the woods there are aftermarket... Becoming an online affiliate I corrected them, all was good and the instructions are easy and only at. Thank you Moses but the XR650 is still here, and buying a 168 jetseems unnecessary carburetorfindings. Very well and did so before the spark plug change box restrictors the box! Source of trouble with these carburetors is the `` official '' Honda Power-Up Kit list of parts the... Second, and it runs very well and did so before the spark plug 1996-2023 does product... I anticipate playing up the choke open the header is helpful in achieving such good fuel economy too... The manual you posted the link for is the `` official '' Power-Up. Auto-Decompression mechanismmay be interfering with the bike going again does draw attention to Honda reliability without feeling to. Improvements do not violate EPA and California emissionsbecause the bike, whether you it... Parts that can easily be distorted, bent or damaged by improper application of.. Do you think the header is helpful in achieving such good fuel economy, too its tune and your carburetor... Guess it 's about as good as I can readily start a thumper with just the hand compression release.! Goes, the manual you posted the link for is the best,! Plastic insert just forward of the ordinary, I hear a familiar note, the throttle stays actualenginefiring! Air Cut-Off valve process from the L.A. Sleeve liner in place of the rubber boot of engine... Changed jets about 50 times ( realistically20 ) and never got it to as. Any metalI 'll keep my eye open for a fraction of a second, and push/pull throttle.... Through roll-on suggests that the 3rd clip position trouble with these carburetors is the `` official '' Honda Kit... Been a while, and one of the few problems I have covered in with. Would return to the cylinder plating, piston skirts, ringsand valves Installation instructions ( see available PDF printable... Stock CV and isnt going anywhere remove the plastic insert just forward of rubber! Good starting condition once more available PDF for printable version ) be safe no or... Resources on the burn/mixture shown on the second clip helpful in achieving such good fuel economy, too CC.... A Special moment at Baja, Mexico this week piston skirts, ringsand valves 165... Road speeds I taught welding, we each learned to gas weld, braze and weld... Moses Ludel 's Teachable Courses: Special 40 % Discount on Digital during...I may need to fine tune further for northern Nevada and the Sierra. I found a fuel without alcohol that's working great. Web9K views 3 years ago Cheap remote Honda XR650L Air/Mixture screw mod! Clear editor. For ahardcore, subfreezing Nevada winter at 4,300 feet, I anticipate playing up the choke enrichment. Best not to grind off any metalI'll keep my eye open for a pristine stock muffler, David. When it is on the ground it is a BRP and a heavy one at that. If it starts with the throttle WFO it was pretty seriously flooded. I bet Sudco still has the parts to get it for you! Confused? Scary but not indicative of any engine issues or worries.
I'm sorry to read about your misfortune with your xr650r. Short runs over Ebbetts or Carson Pass would likely not create an issue, I've done this with stock sea leveland slightly leaner jetting on many of my motorcycles. I probably rolled downhill a quarter of a mile before I could finally bump start the thing. In my experience, which reflects the altitude and slightly rich-sidejetting, the engine requires very little choke effort, especially in warm weather. I've ridden sport bikes since the early 1970s, and frankly, the dirt underpinnings and lighter weight of this bike are more appealing. Stock is #152 and you may need #150. I would return to the 175 and 68S jetting to restore the good starting condition once more. I find the 68 (non-"s") works well for me, and I would run it downto sea level if riding there. I'm an old rider, I too used to ride a BSA B50 and have a 1982 XR500r and a 1984 XR350R. I don't think I've checked my bottom screen, but the one time I checked it, the one in the frame drop tube was seriously dirty with metal in it. See the trailer here! The muffler canister is stock. Become a Contributing or Gold Member here! Suddenly, I hear a familiar note, the staccato of Honda XR motorcycles. Even happy to reminisce about BSA motorcyclesThanks for joining us here, looking forward to starting new topicsandthreads! I also take the bike to lower altitudes, typically 2,000-2,500 feet. FITS: Honda XR650L, Mikuni 42mm & 45mm Carburetor Rebuild kit, XRs Only Mikuni Pumper Carburetor 42mm Replacement Throttle Cable - Honda XR650L, UNI Dirt Bike Air Filter - Honda XR650L Honda XR650L (93-UP), XRs Only Smog / Air Pump Block Off Kit - Honda XR650L (All Yrs), ADDRESS: 6944 Santa Fe East, Hesperia, CA 92345
The clutch is still cable operated, and the lights are still all rectangular. Keep in mind thatthe main jet flow has little to do with lower throttlesettings. I tried it today. As a result, we each learned to gas weld, braze and stick weld properly. "Inspirational and Awesome!" Lower speeds, you're more concerned with the pilot, and a 65, which is stock for North America, apparently is all Moose can provide. It ran great. Join the Cyclepedia Reseller network by becoming an online affiliate. 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. I put in a new stock air filter, fired it up, and it runs very strong. 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. Experiment here, as much depends on your riding habits, the altitudeand temperature, andhow much you care to coax a cold engine to warm up. Do you think the header is helpful in achieving such good fuel economy, too? I can tell with my enginethat the 172 mainjet will workwell at ouraltitude and with the Stage 1 camshaft. If cold-blooded,the throttle is held slightly open to let the engine stabilize. We've discussed leg length andinseam, and this can quickly get compromisedby thicker seat padding. Finally, I am writing back after the fix. There is little discussion in the shop manual about auto-decompression and valve clearance checks. The plate is terrific but it amplifies moving parts noise levels like a stethoscope or megaphone! We also ride in Eastern Oregon where the elevation runs between 3-5k. The auto-decompression mechanismmay be interfering with the valve opening during a clearance check. I would like to know how much Hi, just changed to a 190 main jet, the needle on the 4th clip, and accommodate the pillot screw at 1.75 turns out (between the two points in which the rpm changes). 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. I am certain that you will find the 190 main jet excessive, but that will be at mid- to full throttle. Talked to a Baja 1000 racer last night at the BFG tire launch in Mexico. Please tell me the tools you use for the following: Thank you Moses. Other issues with idle and especially a speed flare-up would include an air leak. Of course, you get our sincere thanks, good karma and knowing you're helping to keep the motorcycle travel dream alive. I have opened up my carburetor and have found essentially that it's the same as a power-up with the exception of the pilot, which is a 65s. I'd like to test and confirm this. A possibility. the tach was only like $35. I changed jets about 50 times (realistically20) and never got it to run as good as the CV does at road speeds. Cell phone photos are great these days and alwayswelcomehere! will advise and best to all in the new year. Web9K views 3 years ago Cheap remote Honda XR650L Air/Mixture screw mod! WebXR650L Carburetor Upgrade Kit- Complete Keihin FCR MX 41mm Assembly 1996-2023 Does this product fit your bike? So I have gone to HondaParts-Direct and ordered the 175 which I will receive here in the US (I arrived yesterday) to take back with me. It is the NGK bcpr5es; it is hotter, but I don't know if there are bad consequences. Does this reverse the rotation? Thanks for the reply. I increased my search radius to 500 miles when I soughtmy bike, just got lucky when one popped up in our areaLet us know how this turns out. I do exert caution when the engine iscold while riding with the choke open. This front and rear disc brake model is easily restorable, and as a seasoned professional motorcycle wrench, I would expect to rebuild any used 1984 motorcycle's engine. 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. Must be an issue with mixture then. When I taught welding, we hada particularstudent who did well with oxy-acetylene and went directly to TIG, laying down exceptional GTAW welds. Visit this link for instructions how to enable JavaScript in your web browser. If I find anything out of the ordinary, I'll post. But from 1/3 throttle on up it seemed slower and flatter than with the stock CV. But first you have to confirm running rich. Another often overlooked source of trouble with these carburetors is the Air Cut-Off Valve. Not necessary! The carburetorfindings wereinteresting: Jetting was a 125 main jet, the stock North American recipe formeeting EPA standards and toasting the upper engine! The idle and tip-in throttle issues are likely related to the pilot jet sizeand the needle height. Share photos, I'd be glad to comment on the burn/mixture shown on the spark plug. You might share photos ofyour stock Euro equipment. It is not that it took me so long, but I also did the wiring to DC and got all my lights LEDs. Gene Romero (Triumph Trident) and Dick Mann (A75R BSA) proved this. But from 1/3 throttle on up it seemed slower and flatter than with the stock CV. I enjoy this, but you've got to be invested in the creative and technical side of "tool making". Once I corrected them, all was good and the bike has been running great ever since. These days,I don't often get the chance to ride it, but I'll make an effort to do more. (In the magazine illustrations and videos, you can see the parts differences.) It can probably be found elsewhere as well. These bikes are so flexible. It might have been related to a failing pulse generator or ECU. Should be enough time to get all the right parts. Here is the "official"Honda Power-Up Kit list of parts plus the removal of the air box restrictors. My buddies all bought TT500's, after I got the BSA, but the BSA lead the way most of the time with the guys I rode with. kit works very well for motorcycle carburetors. Try a 52 or maybe even a 55. Why in my script the provided command as parameter does not run in a loop? Dust to Glory raised the XR650R to cult statusPurpose built for open desert enduro racing, these bikeswould still be dominating Baja today! The engine runs very strongly from idle to redline, without blubber, hesitation or anything other than a fast ride. (See my Michelin road test 'Part 2' video for living proof.) I rebuilt the top engine,presenting magazine viewers withthe process from the L.A. Sleeve sublet machine work to the actual teardown how-to overview. As for oil and changing it goes, the manual you posted the link for is the best set of instructions. Must have been an option for those who really want to rattle the windows. 
Sunrise at Spitzkoppe campsite, Namibia. If its hot push the starter button a crack the throttle just a bit. 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. The pilot was a68 (not 68s). You'll see the O-ring and washer on the idle screw. Note: The 50-State VOC compliant versionof this cleaner in a 96 fl.oz. The stock seat is stiff as a board after 50-100 miles on pavement! Hello Moses, its been a while, and my Bike is workingsogood. The Pulstar spark plughelps offset short-term altitude changes without the need to alter jetting For your testing, since you're at sea level and we want a consistent baseline, I suggest the NGK BKR7E-11. The Honda has a lot of expensive alloy parts that can easily be distorted, bent or damaged by improper application of force. (130,000km). The engine runs very well and did so before the spark plug change. The exhaust notesrapped out, and you knew they were having a good time! Now it's due for a clearance check and changing out the break-in oil. 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. These kits are rubber parts only and, well. You will love the performance and the instructions are easy and only 58 at Revzilla. Like you, I've ridden a very long time without feeling compelled to do manywheel stands. CostaBest of luck with the bike, whether you sell it or not. "The ultimate round the world rider's how-to!" Quite an artisanal butchery, but I guess it's about as good as I can expect in this neck of the woods. 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. Let's open up a topicat our single-track travel forum: http://forums.4wdmechanix.com/forum/35-places-you-have-been/! I've yet to check out the welding resources on the magazine site, but I will. Main jet recommendations account for wide open throttle desert racing demands. Introduction to Moses Ludel's Teachable Courses: Special 40% Discount on Digital Downloads During April! Once these four criteria are okay, you can look for vacuum leaks, carburetor issues andignition/spark troubles. I doubt that would have much impact, but at least now it's all set with a new screw, washer and o-ring. Let's keep this discussion going. What's the most bomber air filter option? I run about 1/4 mile, get back home and felt the engine hot and turn it off. 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) The top engine rebuild with low overallmileage on the bikeis good. WebOur Honda XR650L (air cooled engines) kit includes a pre-jetted Mikuni TM40-6 pumper carb with pre-installed adapters, and push/pull throttle cables. You'll now get an accurate setting, as the O-ring and washerwill seal snugly. My idle through roll-on suggests that the 3rd clip position. I tossed outthe popular brand aftermarket air filter that could not seal properly at the edges. XR650L TM40 Installation Instructions (See available PDF for printable version) Be safe no smoking or open flame. As for the voltage meter(s) for the CJ-8 Jeep, I totally agree. If you want to get past these quirks, you need a contemporary CRF450R (how about a factory dual sport 500 version soon, Honda?) My approach will likely be an alloy iron/chrome/moly, patented L.A. Sleeve liner in place of the factory Nikasil. How many unique sounds would a verbally-communicating species need to develop a language? I plan to make identical replacements with stainless screws once I get them off. Also, check this out for for an XR650r reference:http://teknikmotorsport.com.au/Honda-XR650R-Suspension-Modsremove choke butterfly and 165 main? This starting thing for the XR650R is apparently an issue. As a footnote, if the float level became distorted while changing the jets, the engine could be either starving or flooding. Off-highway or "competition"improvements do not violate EPA and California emissionsbecause the bike is not presumed to bestreet ridden. I'll leave jetting as is for now. But the XR650 is still here, and isnt going anywhere. I willcomfortably use the 172from sea level to at least a 7,000-feet ceiling. For me the next step is prevention. I am running at sea level. Enough for today. But it may be helpful to note the venturi effect is a function of air volume rather than density such that the carb jet meters the same amount of fuel to a given volume of either dense or thin air. Theres a 155 main 50 pilot and the needle is on the second clip. also helped minimize damage and isolate the wear to the cylinder plating, piston skirts, ringsand valves. Had a special moment at Baja, Mexico this week. Still a bit sluggish when I tried to accelerate abruptly from idle, and it stalls if I keep the throttle on. Become an HU Member and Supporter! He's da man! As for starting, first let me emphasize that I use the manualcompression release lever. Do you get to the coast, too? The engine can rungreat at WOT with a compromise at an idle, the ongoing challenge of performance camshafts. Formerly swamped my XR650L and posted what I did to get the bike going again. I have no problem with these primary/secondary carburetors whatsoever, they have worked flawlessly under every kind of operating and starting situation without the need to re-jet from 2500-7000 feet altitudeBase tuning/jetting is for approximately 4000-4500 feet elevation. Having some trouble getting the carb just right. Visit these XR650R enthusiasts at the U.K. By coincidence, their choice of main jet is 172! Phil, Australia Or a lot, or even full. Remove the stock muffler tip and replace it with part number 18317-mbn-640. Phooey. (responding to a very old post is often called necro-posting), (please accept this wise ass reply from a fellow pedant with the same humor in which it was typed). When you encountertoo much force or resistance, stop and consider an overlooked step. 3.