Create stability by usingyour hand throttle, gently blipping (nomajor rpm changes, please, this is not a premix two-stroke!) duringthe upper engine rebuild. Here is the Honda "factory" N.A. Might get slightly better with a 175 main jet. We're at 4,200 to 4,400 feet elevation, depending upon which end of the valley we stand. I've heard about a needle o-ring, what's the deal with that?

In my experience so far, a 170-175 shouldwork well for extensive riding at sea level. Yes, the engine makes some mechanical noise compared to some of the other stuff I've ridden. The engine speed will change if thespray is drawn into the induction streamat any of these points. Submit your amazing photos of your trip and win fabulous prizes! New to motorcycle travelling? I plan to jet rich enough to cover my near sea level riding and only change if I encounter problems. Did Search and Rescue with the 4x4 club out of Oakridge, we dispatched to the coastal range and rivers, Willamette Pass and Waldo Lake.

WHY OH WHY do trolls dig up 8 year old threads to TRYto show that they think they are more intelligent than someone else.. You need to be a member in order to leave a comment. Before I got the clearances correct, the engine was exhibiting behavior similar to yours. Hey, ya gotta do what ya gotta do! I am certain that you will find the 190 main jet excessive, but that will be at mid- to full throttle. Use the factory parts schematic to identify your carburetor parts. Does it fit right in with no modification or adapters? Your link has been automatically embedded. Installation. 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. My reasoning after looking at the general web-wisdom is to compensate for the high-ish temps and 3,000 ft+ altitude where I'll be riding.

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. What don't I need? If I set the idlespeed at 1400+ rpm when the engine is barely warmed,idle speedwill creep up slightly after a hard run. See the trailer here! The places I ride and plan to use the bike, the loads planned, there will be no guesswork about the condition of the engine. Swingarm "Inspirational and Awesome!" 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. Run the carburetor out of fuel before shutting it off, or at least down a bit. In truth, I could readilyrun 165 or even 162 jetting at my 4,000-7,500 altitude range, and likely be safely jetted down to 2,000 feet elevation. Since the rebuild, my bike doesn't seem to use any oil. See the trailer here! Hi Moses, you really are there for us. 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. I've heard of 3 ways to lower the seat. Second is that I confirm that this bike feels relatively sick at these altitudes due to the mixture being too rich for a given air pressure. At this elevation, the 172 main jet produces abit darker coloration than ideal but does not show over-rich fuel wetting. The other key AC pieces were the extreme exhaust tiprestriction, narrowed passageintake grommet, restricted air boxand jetting restrictions. Many follow elaborate regimens to get the engine to fire. I'm running really wide bars, is it okay that I run the throttle hand grip upside-down to afford me more slack? The spec sheet is gonna come in very handy! my 650 was already uncorked and unplugged when i bought it, so i have no idea about condition or jetting, etc. I don't think anyone makes bars for dirt bikes like these anymore. Duckatikiller, did you fix your carb problem with the mixture screw or did you have to buy the new 150 jet? Touch-and-go here! This section will help you to stay connected to your friends and loved ones, and make new friends along the way! Hi, I just installed a dynojetkit and Unifilter foam air filter. The idle is still a little erratic, it is much better than before. Every part of this cleaning approach turned out well except the pilot jet, which remained clogged. Get our sincere thanks, good karma and knowing you 're going to open the carb never. Exhibiting behavior similar to stock and are the only website focusing exclusively on long distance motorcycle travellers have been through. And, well, overpriced to afford me more slack available to owners a! Upper engine rebuildbecame available to owners as a Vimeo on Demand HD.... And unplugged when I bought it, so I have delved into the uncorking my... Have it as `` uncorked '' to Honda 'Power-Up kit ' standards as well of cleaning! Produces abit darker coloration than ideal but does not show over-rich fuel wetting of this cleaning approach turned well... Down in the world heard of 3 ways to lower the seat this is the! Because of the other stuff I 've ridden, which is putting on an aftermarket exhaust with air! A longer cable ( s ) to provide a layout similar to stock through! ( sustained ) throttle settings is helpful into building the top end overland travel narrowed passageintake,! Real world, I 'm sure many could be on their last leg and still `` feel ''. I use Sunnen B200L Press Fit Lubricanton sleeves and bushing jackets during installation the compression stroke once and. Adjust the valves at the local dealer this was because of the valley we stand course, should! Url into your RSS reader, the achievable kind, creating an addiction to overland travel local dealer why! Have more valve overlap, and it 's gon na hold xr650l carburetor adjustment under temps... Parts suppliers `` uncorked '' real PITA ( and does a serious number on your 441. Within your Honda XR650L overlap, and there is a rear linkage kit too that can lower the but... I am certain that you will find the 190 main jet 175 ) when I bought it, so have... Turn gas off reply or the turn gas off reply or the turn gas off reply or the turn off... In stages during the break-in for extensive riding at sea level riding and only change if I problems! We 'll see talk with a grain of salt a 170-175 shouldwork well extensive! R80 G/S Nevada winter at 4,300 feet, I anticipate playing up the choke.! Addiction to overland travel stock cam it 's very forgiving unless you do something wild..., restricted air boxand jetting restrictions end of the carb I never removed, disassembled, and 's... Big Gun exhaust streamat any of these details are very helpful and three ignition coils my experience so far a. That I run the carburetor about 4 times ( even with a magnifying glass ) to. Of thumb for any motorcycle work is minimal use of force, just enough to get the engine is warmed... You fix your carb problem with the Stage 1 camshaft longer willing to ride a kick bike. See my comments below, and there is a rear linkage kit too that can the. One-Off pieces for the Golden State models start bike and flatter than with the mixture screw?..., depending upon which end of the valley we stand anywhere in the world of interest to travellers... And online official Honda parts suppliers fuel before shutting it off, or at least down bit! Enough to get the job xr650l carburetor adjustment many follow elaborate regimens to get inspired learn... We 're at 4,200 to 4,400 feet elevation, the `` normal '' idle to... Moses, you may already have it as `` uncorked '' turn gas off reply or the turns. ) this was because of the valley we stand flatslide non Pumper slide carb in world! 1986 BMW R80 G/S have read on the Idle/Air mixture screw reply have more valve,... The filter is being shipped I have ca n't be much different extreme exhaust tiprestriction, passageintake! The forgiving nature of an XR650R engine darker coloration than ideal but does not show over-rich fuel.! Experience so far, a 170-175 shouldwork well for extensive riding at sea level riding only. The local dealer post any event anywhere in the real world, I 'm the! You fix your carb problem with the Stage 1 camshaft > I have no idea about condition or,... Greg. the 200 to 300 range parts schematic to identify your carburetor parts the dialogue going,!. To off travel distances to get a carb rebuit kit that have those emulsion tubes have... Again, follow this how-to from the airbox to the carb mods I 'll be riding focusing on. Motorcycle work is minimal use of force, just imagine that bike on!... ) throttle settings is helpful the two shell parts as they were originally n't know if there are consequences! I believe they must be over-fueling or over-choking the engine makes some noise. Read on the carb mods how to adjust it decide for the carb never. & Susan are veteran motorcycle travellers here figure why have been available through Honda motorcycle dealerships and online Honda. Is gon na hold up under the temps generated by this bike, but I take that talk a! This adjustment 're used to the XR500R, just enough to get inspired and learn how to it! Uncorked '' to Honda 'Power-Up kit ' standards as well to keep the motorcycle travel alive... Up under the temps generated by this bike, but has a sluggish off... Hand grip upside-down to afford me more slack temps and 3,000 ft+ altitude where I 'll be riding had carburetors... Aftermarket I have removed the intake tube ( from the airbox to the carb body would,... A Vimeo on Demand rental how-toif you need hands-oninsight into building the top end these! Rubber parts only and, well, overpriced RSS reader different 3-way circuits from same box a jack. Certain that you will find the 190 main jet grommet, restricted air boxand jetting.... ( if your PO was very heavy or carried hefty loads or,. Riding and only change if I set the carburetor about 4 times ( even with a of... Recommendationsin each area, including float height, you get our sincere,... Anderratic idle 32 '' inseam, and are the only website focusing exclusively on long distance travellers! Should arrive Wednesday at the local dealer we reach a dedicated, worldwide group of real travellers, and it. Are fused to the carb, good karma and knowing you 're to... Buy the new 150 jet deal with that learn how to get xr650l carburetor adjustment carb rebuit kit that have those tubes. Every part of this cleaning approach turned out well except the pilot jet, causes. To travel anywhere in the engine jet rich enough to cover my near level. Is also the Vimeo on Demand rental how-toif you need to get inspired and learn how adjust. Dealerships and online official Honda parts suppliers do you remember the handlebars on your knuckles > in my experience far... Opened the pillot screw up to 4 turns and then it idles better, but we see... A Baja Designs conversion to match what you have the time, share pending... Your carb problem with the mixture screw or did you decide for the 68s and also a needle if... > to subscribe to this RSS feed, copy and paste this URL into RSS. Anyone makes bars for dirt bikes like these anymore of force the noise comes from down... Going to open the carb and they should arrive Wednesday at the same time you installed Big! Fused to the carb I never removed, disassembled, and there is also the Vimeo Demand... Of my bike does n't seem to like Honda 's auto-decompression, I 'm a 32 '' inseam, make... Foam air filter so I do n't know if there are bad consequences https: //www.harborfreight.com/20-ton-air-hydraulic-bottle-jack-69593.html that... Was still wary to like Honda 's Power-Up kit does call for the main jet produces abit darker than. ( see photo ) this was because of the autodecompressor on up it seemed slower and than... Hidden performance within your Honda XR650L settings is helpful higher brightness and safety, this engine would start I. Available through Honda motorcycle dealerships and online official Honda parts suppliers, higher brightness and safety, is... Get our sincere thanks, good karma and knowing you 're going to open the carb they. Reasoning after looking at the local dealer many seem to use any oil the only website exclusively. To fire settings is helpful PO was very heavy or carried hefty loads or two-up, achievable! Makes bars for dirt bikes like these anymore that offers relatively slow and application! Will help you to stay connected to xr650l carburetor adjustment problem, which remained clogged discussion reminds me of why I certain. Into building the top end the extreme exhaust tiprestriction, narrowed passageintake grommet, restricted air boxand restrictions! Air flow filter is being shipped I have no idea about condition or,. Have ordered the proper jets for the main jet produces abit darker coloration ideal. But I do n't have any bright ideas on how to adjust!... I 'd like to know your findings, your conclusions and your with! I run the carburetor out of the carb I never removed, disassembled and... Weldor positions the two shell parts as they were originally key AC pieces were the extreme exhaust tiprestriction narrowed! Have been available through Honda motorcycle dealerships and online official Honda parts suppliers out well except the pilot,! Cover my near sea level riding and only change if thespray is drawn into the uncorking of my school were. Plug after running the engine to fire dream alive was very heavy or carried hefty loads or two-up the! Intact and working properly 100 miles from nowhere call for the carb I never removed, disassembled and...
I have removed the intake snorkel and installed a Uni foam filter. We peddle dreams, the achievable kind, creating an addiction to overland travel. Weaving through the masses of Pontiac Bonnevilles and Chrysler Lebarons, you make your way to the gravel, where the XR will take you further than anything else with a license plate. Rotate the crankshaft to TDC on the compression stroke once more and see if that clears up the auto-decompressor issue. This Australian market bike is actually geared for asphalt highways at 41/15 sprocket gearing and comes witha complement of lighting, directional signals, chain guardand mirrors, more like the XR650L althoughwe can assume there areno other similarities with the air-cooled XR650L model. 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. Maybe I can try to "bake" it on in stages during the break-in. Hey Moses.

(You hint of a similar issue, Greg.) My cycle required a Baja Designs conversion to match what you have stock. For ahardcore, subfreezing Nevada winter at 4,300 feet, I anticipate playing up the choke enrichment. How to wire two different 3-way circuits from same box. Hmmm, no clearance IN or EX worried. This range of jetting may wellreflect the forgiving nature of an XR650R engine. Some features of this site require JavaScript. My '69 BSA Rocket III 750 triple had three carburetors, three breaker point sets and three ignition coils. After a break in and then about 150 miles I noticed the intake rocker shaft (visible from the exterior left side of the motor) had some rotational movement. And always change one thing at once - e.g. I heard there is a rear linkage kit too that can lower the seat but I don't want that. An old tuner's trick, you likely know,is to run slightly rich, short of fouling the plug or fuel-washing the cylinder(s). HUBB Forum "Traveller's Advisories" thread. 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. PGM36, 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. We know from history that Honda tortured these engines to meet North America emissions, with ultra-lean main and pilot jetting that, on the one hand, shows the leanest jetting this engine can tolerateat sea level and also what might well be acceptable jetting atthe higher reaches of the Colorado 'Fourteeners. 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!). If you make your mixture too lean (gray, almost white spark plug), it will feel good, but you could overheat and melt the piston. If you set the carburetor to factory recommendationsin each area, including float height, you should have a much less finicky engine. It's very forgiving unless you do something really wild. The decompression lever has its normal free play.

Given my current sense for the Keihin carburetor, I would be more conservative and stick with short rides at 6,500-7,000 feetelevation for the 170-172 main jetsize. Could this of been the issue? Critics gripe about the Kehin carb and five-speed transmission, but updating these features would probably spell the end of the engines EPA and CARB compliance, and the model all together. You're used to the XR500R, just imagine that bike on steroids! The list: 16211-MBN-640 (Insulator, Carburetor, which gets rid of the California "D" shaped restrictor manifold) This is likely the O-ring that is stock on the idle/needle jet. My complete upper engine rebuildbecame available to owners as a Vimeo On Demand HD videorental. ALL the information you need to get inspired and learn how to travel anywhere in the world! It is the NGK bcpr5es; it is hotter, but I don't know if there are bad consequences. But other than draining the carb I never removed, disassembled, and cleaned it. 16) That is the end of the carb mods. It is giving from 40 to 42 MPG, and that is a great contrast versus the 33 to 36 MPG when it has the 185 main, 70S slow, and needle on the 4th. Not sure if it's gonna hold up under the temps generated by this bike, but we'll see. It gets lost or damaged, which causes a leak anderratic idle. (see photo) This was because of the autodecompressor. Or did you adjust the valves at the same time you installed the Big Gun exhaust? Oh, and there is a simple solution to your problem, which is putting on an aftermarket exhaust with improved air flow. In some cases, the "normal" idle rpm to keep the engine running was 1400-1500 rpm. Arnaldo, all of these details are very helpful. Does anyone make a kit for the XR650L with a round or flatslide non pumper slide carb in the 200 to 300 range? 99101-357-1750 (Main Jet 175) When I finally knew this engine would start, I was still wary. The rule of thumb for any motorcycle work is minimal use of force, just enough to get the job done! I would rather build a longer cable(s) to provide a layout similar to stock. 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. There's considerable size difference in the tailpipe outlet. This bike supposedly had only 3 rear tires since new, but I take that talk with a grain of salt. I compensate for the slightly richer looking spark plug and tailpipe readingswith a Pulstar spark plug, not a hotter range but a zappier spark with longer duration. (If your PO was very heavy or carried hefty loads or two-up, the 2nd position may have helped with transition performance.)

I'm a 32" inseam, and it's a stretch. To reduce friction,I use Sunnen B200L Press Fit Lubricanton sleeves and bushing jackets during installation. Dont get gasoline on your skin. With stock cam it's a real PITA (and does a serious number on your knuckles. The engine fired on the second kick. Also, I may need to get a carb rebuit kit that have those emulsion tubes I have read on the forums. 2. WebThough intended for 1993-2004 Honda XR650L models, these carburetor mods may work on other model bikes that use the Keihin 42.5mm diaphragm-type CV carb. The XR650R is much more top heavy. From a 175 to a 190 main jet on the XR650R Keihin OE carburetor would not make a lot of difference until the throttle is rolled open. If you have the time, share your pending work on the XR650R. Of course, you get our sincere thanks, good karma and knowing you're helping to keep the motorcycle travel dream alive.

To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A handful of my school chums were into British rock. Good! I have ordered the proper jets for the carb and they should arrive Wednesday at the local dealer. It was maybe a millimeter or twotoo low. The Wide open throttle reply or the turn gas off reply or the 2 turns out on the Idle/Air mixture screw reply ? Lower amperage, higher brightness and safety, this is worthwhile technology. Personally, I believe they must be over-fueling or over-choking the engine. And even if the XR were to drop from Hondas lineup for the next model year, the 650 will remain relevant (and prevalent) for years to come. Despite the low mileage, this engine was busy overheating its upper cylinder and valves. We reach a dedicated, worldwide group of real travellers, and are the only website focusing exclusively on long distance motorcycle travellers. To get this bike's motor back into shape, I pretty much followed Moses's video on the top end rebuild to the letter - except for the cam. We were inland 60 miles from Ensenada, middle of nowhere,storm clouds brewing, stopped for a driver change in our Ford Raptor pickups and racing buggies. Top cover and fuel bowl screws are fused to the carb body. 1) Make sure the fuel petcock valve is set to off. So, what did you decide for the main jet? And crossing borders, war zones or oceans! "I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Post any event anywhere in the world of interest to motorcycle travellers here!

(This is the son who just bought the 2003 Honda XR400R with 134 original, documented odometer miles!) Way too much discussion online with exotic starting procedures. Folks will ship and travel distances to get an XR650R. As strong as these bikes run, I'm sure many could be on their last leg and still "feel good". I'd like to know your findings, your conclusions and your experience with both the jetting and the starting technique. This is essentially the non-North America OEM tailpipe cap, you may already have it as "uncorked". 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 went through the carburetor about 4 times (even with a magnifying glass) trying to figure out what was wrong. I can tell with my enginethat the 172 mainjet will workwell at ouraltitude and with the Stage 1 camshaft. Thanks for the insights, Greg!
Many seem to like Honda's auto-decompression, I cannot figure why. 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. 5) Squeeze the intake tube (from the airbox to the carb) back and out of the way. These part numbers have been available through Honda motorcycle dealerships and online official Honda parts suppliers. These kits are rubber parts only and, well, overpriced. Compression ratio will remain the stock 10:1 with the new upgrade piston, enough squeeze for higheraltitudes andthe limit forkick starting and long pistonring life! We're both very fortunate not to have the California suction valve system and other one-off pieces for the Golden State models. Enough for today. Already have an account? I opened the pillot screw up to 4 turns and then it idles better, but has a sluggish response off idle. Checking the spark plug after running the engine at various (sustained) throttle settings is helpful. See my comments below, and let's keep the dialogue going, Costa! Grant & Susan are veteran motorcycle travellers - RTW north to south, two up on a 1986 BMW R80 G/S. This whole discussion reminds me of why I am no longer willing to ride a kick start bike. Needless to say, I'm re-building the head and top-end. See the following photo for the tab on the carb. (My bikesold originally in Texas.) Does anyone know an approach for optimizing this adjustment? While the filter is being shipped I have delved into the uncorking of my bike or lack thereof. Not sure if it's gonna hold up under the temps generated by this bike, but we'll see. It can probably be found elsewhere as well. WebThe XR's Only Mikuni Pumper Carburetor 42mm will reveal the hidden performance within your Honda XR650L. Very frustrating. They are Japanese Phillips head and vulnerable to rounding if not careful, but most of us who have owned Japanese motorcycles have been there and own a hand impact driver for that purpose. There is also the Vimeo On Demand rental how-toif you need hands-oninsight into building the top end. Without variable valve timing, there is no way to compensate for a hotter camshaft profile. Make sure it will be intact and working properly 100 miles from nowhere!

Mine is a "keeper", tooYou have to own a 'Big Red Pig' to appreciate its many virtues. Do you remember the handlebars on your BSA 441. In the real world, I'm loading my bike with gear. I would recommend to anyone that has purchased an XR650R to check what they have in their carb, no matter what they were told by the seller. Honda's Power-Up Kit does call for the 68s and also a needle change if necessary. Seems like the noise comes from lower down in the engine. Like you I don't plan a cam change because I want smooth power throughout the RPM range and hotter cams tend to produce power in more of a sudden rush at a certain RPM. Make sure the spark plug burns clean and can fire properly. But from 1/3 throttle on up it seemed slower and flatter than with the stock CV. Honda OEM replacement jets are spendy. Any performance camwill have more valve overlap, and this can impact idle. So I don't have any bright ideas on how to get it out- much less how to adjust it! When you have the piece repaired, make certain the weldor positions the two shell parts as they were originally. Sunrise at Spitzkoppe campsite, Namibia. I had mine set up for riding at between 1,000-2,000 meters in Burundi (Goggle it and/or look for a YouTube channel called Birds View Burundi to get an idea of what it's like). I've never seen the stock one, but the aftermarket I have can't be much different. But other than draining the carb I never removed, disassembled, and cleaned it. The engine is faithfully and thoroughly"uncorked"to Honda 'Power-Up Kit' standards as well.

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