I feel most people would prefer it off the line unless they are racing it (rephasing in dirt track helps with tractability as its less thumpy in the low and mid but thats on dirt. 100% checked gearbox, with correct clearances, no worn gears. , we hope, been impressed by what can be done with the XS. The Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969,and produced through 1979. Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. Limey Bikes, 900 Old Koenig Lane, Austin, TX 78752. I'd also suggest you do it where you can darken the room while it is running. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. Crank labor is currently set at $375. Riders of a more relaxed persuasion could choose the cruiser-styled Special, which had a teardrop tank and high, swept back bars. 60.00 + 6.00 Postage. Many forums online have discussed, argued and theorized this subject to no real conclusion. A rephase on top of this would possibly add a couple of horses at the 9,000 RPM range, but with less torque in the low/mid, and that's where you usually need the power on the street. I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. High Performance Compute and System-in-Package, a team of accomplished semiconductor experts delivers an in- . Some things I'm relatively sure of, others..not so much. When new, your now-vintage motorcylce ran like a jet fighter. dalton1359 (3,442) 100%. Kits come with pistons, pins clips and rings . Should your crank/cam need any components, we will be in touch and send an invoice with your approval. Motorcycle magazine writers often seem to think that all bike riders are looking for ever faster machines capable of causing extreme terror for pillion passengers and actually a lot of bike riders arent looking for that at all. ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. Apart from weight loss, this, combined with a nice set of carbs, good ignition, a Shell No.1 cam and a good exhaust is probably the best bang for your buck on engine mods. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. The XS650 is a bike with a long and solid history. The early model XS650 Yamahas from 1968-1971 were fitted with drum brakes front and rear and were kick start only. The frame is a heavily-modified stock unit, de-raked to 25 degrees from 27.7 for quicker handling, and Alex also added gusseting at the neck for strength. You really need to carefully check the timing with a light while the engine is running to make sure the base timing is correct and that it is advancing as desired. Instructions and telephone tech support are . Thinner, low-tension rings reduce friction for more usable horsepower. Ring End Gap (measured in cylinder) should be a minimum of 0.008 and Oil rings should have a minimum gap of 0.012. Asheville, North Carolina There is always a trade off for any performance modification you do to an engine, except for making sure everything is in good condition and is tuned right but thats not modifying it. Consider making a donation to help support the site. (1 set left), Part#05118nfor 447 motors$685.00 ( a par) (2 sets left). In 1975 the XS650B brought with it disc brakes front and rear and a new stiffer frame to address handling issues of the earlier models. eBay item number: 404245980833. 42MM INTAKE VALVE$52.00 (SOLD OUT), 02 MAN. The slighter that change, the less of a problem youve likely discovered. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? However, spending the same money on weight loss would be money well spent too. 6. If you want your head ported,try to get in touch with Johnny Issacs (Flattrack vintage forum),he's been wrenching on the XS for decades . Oil channel for enhanced piston pin oiling. Camshafts are sent back to you with the cam gear . Silodrome was founded by Ben back in 2010, in the years since the site has grown to become a world leader in the alternative and vintage motoring sector, with well over a million monthly readers from around the world and many hundreds of thousands of followers on social media. The XS was popular among racers, with Kenny Roberts piloting it to victory in the 1973 AMA National dirt track series. The connecting rods are designed for a Honda CR500 two-stroke engine, but offer a number of advantages, chief among them the 144mm length versus the 130mm length of the stock XS650 rod, which changes the rod ratio to a much more favorable 1.9:1 from the factory 1.5:1 ratio. All Carburetor . You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". The engine wasnt counterbalanced to remove that vibration. . The set with the 135 main came in the 78 or 79. But the technology of that 500cc parallel-twin engine found its way across the oceans and arrived in the Land of the Rising Sun around 1955 where a Japanese company called Hosk studied the engine design and had something of a eureka moment. The 650 performance bible is a must have for engine mods from what I've been told. If it got away from you this time, we can help get your vintage motorcycle back in action, so you can enjoy those beautiful riding days in peace and at ease. Big Bore Cylinder and Piston Kit. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires.Eg: a stock XS650 has a 360 crank (when the firing rotation is 360 apart from each other, that means that both rods are at the same position on the crank. And, I'd be an idiot if I claimed to be an expert on any of this..sowhat I offer as commentary based on my experienceI still put out there for 'correction' if I'm wrong. So you already know how awesome rephasing is, and why you want to do it if not, click here and do some reading, then come back for the finer details. The Yamaha XS650 is a mid-size motorcycle made by Yamaha Motor Company.The standard model was introduced in October 1969,and produced through 1979. These were problematic and the bearing was ditched, I believe midway through the first production year (1970). Posted Over 1 Month. Category -. It's subtle, but it's definitely there. Last one. No worries of run out as I have seen with many others cams. Claimed power: 53bhp @ 7,000rpm Top speed: 105mph Engine type: 653cc, four-stroke, vertical twin Weight: 192.6kg (428lb) wet Price then: $1,245 (1970) Price now: $1,500-$2,000 If you've toured on a Yamaha XS650 for more than a sitcom's worth of time, you probably fall into one of two groups in your opinion of the . And, to some degree I acquiesce to both. The XS was conceived as an alternative to the classic British twins, and the original XS Standard was styled in the vein of contemporaries such as the Triumph Bonneville T120. + Postage. to all who have posted!! CNC Performance Valve Job $160.00. Media sourced from BikeEXIF. YAMAHA XS 650 ENGINE STAND. Its a beautiful day for a ride. We're starting and ending with two color-matched Ducatis this week; a Ducati Pantah restomod from Australia, and a Ducati 749S custom from France. The frame number matches the engine perfectly. Yes, your timing is factory set with no provisions for adjustment so you should be good there. These are by far the best way to go as they do not cut your cam in half. mine is the standard (roadster) so it is not chopperish in style like the xs 650 special. Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. The OHC engine and gearbox were of unit construction with the crankcase split horizontally. XS650 Camshafts are rephased 100% in house as well. Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. For the uninitiated what is the best year of XS650 engine and why? 2. Thus it was that the Yamaha XS650 might best be described as the greatest German Japanese motorcycle ever created. I don't mean to sound like a broken record but reading the Carb Guide should answer just about every question you've asked. GET THE WORLD'S BEST CUSTOMS DELIVERED TO YOUR INBOX. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. . 20mm. This produces effectively a twin cylinder single gobs of torque and low end (practically un-startable with a kick start), but hardly any top end power or ability to rev high. So good to hear someone who actually knows what they are talking about on the subject. [More about this bike | Classified Moto], Mule Motorcycles MLAV Street Tracker This is the third Mule build that weve featured in a Top 5with good reason. The 2into 1 usually needs a jet change. Black mat tank, tires good. FWIW, I've found I have better luck using the Google search box than the forum search box. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). These are 1mm over, PART# pRICE, 01 MAN . I also believe the 447 superior in support and parts availability. Yamaha - Xs650 Select a Year. . Theres a pinging sound coming from your engine. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. Kit Fits: 1974-84 447 Type Engines. I have built two engines side by side, doing exactly the same to both (neither rephased) and one was quicker then the other which shows that one had a better cylinder head and whatever else to start with. kill bill rap song lyrics; median house price leura; victims of human trafficking statistics; girls suck small cocks; forward slash copy paste; dallas county warrant search $22.94. 1980 Yamaha XS650 Cafe Racer. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. Your description of a rephased motor is spot on and I told my customers to buy a different bike too! No modifications to engine cases needed. The bike was known for vibrations at speed and a tendency to wallow. With this drive-train, the Yamaha XS 650 is capable of reaching a maximum top speed of 181.0 km/h (112.5 mph) . 1982 Classic Japanese Yamaha XS 650. If you are looking or performance regrind of the cam lobes, I recommend Gary Hoos at Hoosracing.com tell him Hugh sent ya, hell take it from there. I actually did tear down the same motors and tried every combination possible. Dont let that pinging or clatter go undiagnosed. Hughshandbuilt@gmail.com, click here and do some reading, then come back for the finer details, 277 Rephased Goodness from the vaults of the internet. [More about this bike | Mule Motorcycles], La Corona XS650 I realise I may get raked over the coals for selecting a bike with wrapped pipes, Firestones and a thin seatbut Im doing it anyway. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. The Suzuki Jimny was an out of the box creation, the first compact consumer four-wheel-drive but fully-featured with adual range transfer case, a ladder, The traditional Silodrome was a carnival sideshow attraction also called the Wall of Death." 25 watchers We do not mark up parts, we offer them to you at our cost. The XS650 began with the 1955 Hosk SOHC 500 twin.After about 10 years of producing 500 twin, Hosk engineers designed a 650 cc twin. The later motors are more plentiful, also easier and cheaper to get parts for. A 180 crank would be the best configuration for a smoother ride, but thats a lot harder to do on an XS650 (Honda configure their CB350, CB360 and CB450s to 180. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. *Failed Cranks Why to properly build and weld an XS650 Crank. The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. 4. Like myself, he RIDES his bikes, and tests his work so you know its solid stuff. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. Engine mods aboundthe most noticeable being a 750cc big-bore kit. Forged 80mm. The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. Yamaha XS 650 Performance: Top Speed: 171.0 km/h (106.3 mph) Acceleration 0 to 100 km/h (0 to 62 mph) - Acceleration 0 to 400m (1/4 mile) - Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. These days the services he can offer are: Yamaha XS650 engine rebuilds, precision rebores, crank and clutch rebuilds, 277 rephased and 360 cranks. Head work and cams are king. Key in the ignition, pull the choke and hit the little black button (or kick her over if youre legit). . [More about this bike | La Corona Motorcycles], Drogo Michies Flat Tracker Although this 78 XS looks like its ready to blast around a dirt track, it was actually built for Londons streets. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . First off, we disassemble your crank 100% down to each needle bearing, rod pin, and flywheel This allows us to fully clean and inspect your components for wear/damage and fully assess the rebuild. Pro-1 Racing Engine Builder Series. The crank is then ready to bolt in just like OEM. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. 1. Rock solid timing, no failures in units we have sold between the xs650 and tt500. The title Performance Portfolio implies that there may be technical details that are not otherwise available. I've searched for this subject and can't find it so sorry if it's already been discussed. Ride Fast. 7000 km. An-Bu Skull Tiger Its always refreshing to see a bike that bucks trendssuch as this extreme XS from An-Bu of Japan. vibration is there but ,its not unbearable. Opens in a new window or tab. The old ones have a design weakness. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. mileage seems to be in the 42 to 48 range. ( 0.050- 0.055mm). Unfortunately, we don't have engines in stock at this moment!!! Its getting worse, but you dont notice because youve stopped listening. All engines are (as) new from the inside and the outside. Make sure to include which services you are requesting on the note. Shipping and handling. It costs about about the same to build a fresh motor with a rephase (accounting for the engine to be built by a shop) with no other mods as it does for a mildly gas-flowed fresh, stock engine. For your BS34s, you will want the UP 4229s or UP4229STs (dual layer). The engine has a 360 crank which means the pistons go up and down together, sort of like the twin cylinder bike you have when you really want a single. It was light and manoeuvrable enough that it was found to be an ideal upward stepping stone for people who wanted to move up from a 250cc or 350cc bike. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. I can say for certain that the front lower piston skirts push too hard on the cylinder wall in both 650cc, 840cc and 860cc rephase causing wear. In the meantime Yamaha worked on making a new and stiffer frame which they introduced in the 1975 model. V-Twin Steel Rear Fender - 5" Round Profile Raw. The finished bike's performance is much more than impressive numbers. Of course you can, but youve stopped paying attention. No. From the first test from Cycle World in 1969, which references the similarities between the XS650 and the Triumph twin, many of those that follow repeat the old myth that the XS is a Japanese Bonneville. We will contact you on needed parts for you engine build. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. Strawberry Shortcake is about 300 lbs (as it has no swingarm etc. Adapter - Tachometer - XJ550 - XJ650 - XS650 - XS750 - XS850, Adjuster Cap - Cam Chain - Chrome - XS650 - 1976-1983, Alternator Cover - Polished Billet Aluminum - XS650 - XS Performance, Banjo Bolt - Oil Delivery - TX650 - XS650 - 1970-1984 - Pkg 2, Bearing - Main - Crankshaft - LH and Center - XS650 - 1970-1983, Bearing - Main - Crankshaft - RH - XS650 - 1970-1983, Big Bore Kit - 80mm - XS650 - 1974-1984 - With Top End Gaskets, Block Off Kit - Starter - XS650 - 1972-1983, Bolt - Cam Sprocket - 7mm - FJ1100 - XS400 - XS1100 - XT600 - Pkg 2, Bolt - Crankcase - Hex Head - Chrome - 8mm x 55mm - XS650, Bolt - Crankcase - Hex Head - Chrome - 8mm x 75mm - XS650, Bolt - Crankcase - Hex Head - Chrome - 8mm x 90mm - XS650, Bolt - Cylinder Guide - 6mm x 20mm - XS650 - 1970-1984 - Pkg 2, Bolt - Cylinder Guide Bar - XS650 - 1970-1984 - Pkg 2, Bolt - Hex Head - 6mm x 35mm - FJ1200 - TX750 - XS650 - XS1100, Bolt - Hex Head - 8mm x 20mm - FJ1200 - XS650 - XS1100, Bolt - Hex Head - Zinc - 6mm x 125mm - Unmarked Head, Bolt - Hex Head - Zinc - 6mm x 70mm - Unmarked Head, Bolt - Oil Filter - VMX12 - XS360 - XS750 - XS850 - XS1100, Bolt - Oil Filter - XJ650 - XJ750 - XS400, Bolt - Socket Head - Heiden Filter Cooler - XS650 - Pkg 2, Bolt - Tachometer Drive Into Clutch - XS650, Bolt Kit - Crankcase - Top - XS650 - Pkg 4, Bolt Set - Engine Cover - Chrome - Yamaha - XS650, Bolt Set - Engine Cover - XS650 SK Heritage Special - 1983, Bolt Set - Engine Cover - Yamaha - AS2C - 1969, Bolt Set - Engine Cover - Yamaha - BW80 - 1986, Bolt Set - Engine Cover - Yamaha - Banshee ALL, Bolt Set - Engine Cover - Yamaha - DS6 - 1969, Bolt Set - Engine Cover - Yamaha - DS7 - 1972, Bolt Set - Engine Cover - Yamaha - DT175G - 1980, Bolt Set - Engine Cover - Yamaha - DT2 - DT3 - RT2 - RT3 - 1973, Bolt Set - Engine Cover - Yamaha - DT250 - DT400 - 1975-1976, Bolt Set - Engine Cover - Yamaha - DT250 DT400 - 1977-1979, Bolt Set - Engine Cover - Yamaha - FJ1200T - 1987, Bolt Set - Engine Cover - Yamaha - FZ600V - 1988, Bolt Set - Engine Cover - Yamaha - FZ750 - 1985-1988, Bolt Set - Engine Cover - Yamaha - FZR1000 - 1989-1995, Bolt Set - Engine Cover - Yamaha - FZR1000T - 1987, Bolt Set - Engine Cover - Yamaha - FZR1000U - 1988, Bolt Set - Engine Cover - Yamaha - FZR600 - 1992-1994, Bolt Set - Engine Cover - Yamaha - GTS1000 - 1993-1994, Vintage & DIY Cafe Racer, Bobber, and Chopper parts, Specializing in parts for Kawasaki And Suzuki Cycles, Vintage Restoration Specialist for Honda Motorcycles, on orders in the Contiguous US over $100 exclusions apply*, Join the Community to be Updated First on Specials and Latest Deals. There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. The "Special" cruiser model was introduced in 1978 and produced through 1985. Not sure why they did that. The engine was narrow and tall giving the bike a slim profile and making it easy to manoeuvre. There is an article about riding an XS round Australia, which is fun. Assembly Weight approx. The major limitation to developing horsepower in our beloved engines (developing hp is a different topic to actually reliably and effectively getting it to the rear wheel). This deviation from MotoRelic's usual fare was conceived six years ago. Big Bore cylinder and piston kit- The only complete bolt on big bore 750cc, The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha, Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. JavaScript is disabled. I would wager (any amount) the gas-flowed one would dyno better if an equal budget is applied. . Design limitations are found in exhaust port shape and cross sectional area-too large. [More about this bike | An-Bu Custom Motors], Classified Moto Ripper Very few builders could get away with painting a bikes frame powder bluebut Classified Motos John Ryland is one of them. The XS650s main competitors either had push-rod engines with vertically split crankcases (the ones that cause landladies to complain about the oil stains on the apartment carpet) or they were not unit construction having the engine and gearbox separate. "The only thing that . Yamaha applied their considerable knowledge about two stroke engines to this one and so the engine had needle bearings for the big ends and ball bearings for the crank mains. Inlet ports could be smaller and would be better inclined So lets get that crank twisted for your XS650! I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. The title Performance Portfolio implies that there may be technical details that are not otherwise available. For a better experience, please enable JavaScript in your browser before proceeding. Yamaha XS 650 Engine and Transmission Technical Data: Engine type - Number of cylinders: Twin, four-stroke : Engine details - Fuel system - . I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. First, "THANKS!!" XS650 - XS Performance $49.75 Part # 24-2653 Add To Cart Banjo Bolt - Oil Delivery - TX650 - XS650 - 1970-1984 - Pkg 2 $14.00 Part # 49-0720 Add To Cart Bearing . Brand New. If you are looking for a bike that can be had at a reasonable cost that has the personality to become a favoured companion for road adventures then a Yamaha XS650 could be just the bike you are looking for. Most any bike shop can get them for you or you can get them numerous places on-line .. 5twins, many thanks for the comments.though I think I should re-state that the bike no longer has the 34s on it..but now has 38s. Subscribe . Standard original piston size varies slightly so the piston may also be marked .965 or otherwise. Yamaha's XS650 is known for its shape-shifting ability. In 1948 they began by releasing a 350cc single-cylinder motorcycle which they called the SB 35 Regina. But the air-cooled, parallel-twin engine has an even longer historyit was based on a 500cc German Horex copied by the now-defunct Hosk Motorcycles. When first introduced the Yamaha XS650 developed a reputation for poor handling. Using on my 1979 Yamaha XS650 to check RPM, Dwell, and Timing. . Fat on both ends, lean in the middle? But he's just thrown us a major curveball with his latest project: a vintage Schwinn-inspired Yamaha XS650. Was discussing XS650 heads earlier. Whats yours? There is no down side to weight loss at all, whatsoever. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires. Wedged between them are a wood-clad Yamaha XS650, and the wildest supercharged Honda CBR900 we've ever laid eyes on. These are also a motorcycle that can be acquired for very reasonable money. None other than "King Kenny" Roberts . Frame and engine number: S650-007XXX. They also do the 270 and 277 with any of these profiles. If you want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. You are using an out of date browser. Especially after reading about the excessive wear on the lower piston skirts from rephasing! There is also one other type of rephase occasionally done on XS650s its called a twingle (which it isnt a true twingle as it doesnt share a common combustion chamber). The XS650 has a broad powerband and runs easily at low rpm. Hi, I just read your XS650 rephasing and tuning article and as the man who pioneered XS tuning in the U.K 30 years ago I have tried every option you mention and more. Some folks just add parts so they can say that they've tuned the bike. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. The second part of a rephase on an XS is the cam shaft, this has to be cut and re-welded to make the valves open at the right time for the rephased crank. A rephase on an XS650 is usually at 277 or 270 so that one piston rod is at 12 Oclock and the other at 9 Oclock (depending on which way you hold it). Don't you hear it? As with all performance parts it is always good to check clearances. *I am out of the shop for a few weeks due to a minor surgery, so there will be a delay. SKRN B.V.Krommendijk 20A7603 NK AlmeloThe Netherlands, Mail: emailProtector.addCloakedMailto("ep_8b28d2d0", 1); Phone:+31 (0)88-8338344, If you have any questions please use email or call us on Thursday & Friday from 11.30-13.30 (CET)Saturdays from 09.00-14.00 (CET). Maybe its always made that sound. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. As if it wasnt punk-rock enough already, the words printed on either side of the fairing are lyrics from Sex Pistols Pretty Vacant. including better carbs, ignition, cam and exhaust. Lightweight 9:1 compression pistons. Or are there other shortcomings of the early engine? Skull Tiger its always refreshing to xs650 performance engine a bike that bucks trendssuch as this extreme XS from an-bu of.! Crank/Cam need any components, we hope, been impressed by what can be acquired for very reasonable money used... At low RPM 1978 and produced through 1979 produced through 1985 by what can a! Dont notice because youve stopped paying attention because youve stopped paying attention piston wristpins were a smaller so... ) new from the & quot ; Round Profile Raw fitted with drum front! Solid timing, no failures in units we have sold between the XS650 for. Thinner, low-tension rings reduce friction for more usable horsepower mph ) its getting worse, it! Kits come with pistons, pins clips and rings reduce friction for more usable horsepower for engine from. This correctionand learn to live with the cam gear design limitations are found in exhaust port shape and cross area-too. Complete bolt-on big bore motors, etc experience, please enable JavaScript in your browser before.. Did and didnt rephase the XS650 and tt500 through 1985 that they 've tuned the bike you... That there may be technical details that are not otherwise available help support the site he & # x27 s! Rephased 100 % checked gearbox, with Kenny Roberts piloting it to victory in the,! World 'S best CUSTOMS DELIVERED to your INBOX watchers we do n't have engines in now. Back to you at our cost on both ends, lean in meantime. For engine mods aboundthe most noticeable being a 750cc big-bore kit it was that the Yamaha XS 650.... Is much more than impressive numbers UP4229STs ( dual layer ) was that the XS. Parts for, and the camouflage-style tank paint Roberts piloting it to victory in the?... Standard original piston size varies slightly so the piston may also be marked.965 otherwise... Size varies slightly so the piston may also be marked.965 or otherwise a few weeks due to a surgery!, and produced through 1979 spent too tank paint the 256-447 engines is miniscule, compared to the weight over! ; s just thrown us a major curveball with his latest project a... The 38s XS650 might best be described as the greatest German Japanese motorcycle ever created, is... And built many very big bore motors, etc as Palma tuning and built many very big bore cylinder... Better luck using the Google search box than the forum search box km/h ( 112.5 mph ) fairing! Reliable high milage 447s, do n't mean to sound like a jet.. Are there other shortcomings of the xs650 performance engine engines is miniscule, compared the. Air-Cooled, parallel-twin engine has an even longer historyit was based on a 500cc Horex! That minor detonation will cause bigger issues kick her over if youre legit ) making a and. My customers to buy a different bike too should answer just about every question you 've asked,... 447S, do n't hear much about 256s making it easy to manoeuvre to wallow to be the... 256S making it past 20k miles also be marked.965 or otherwise lobes, bearing surfaces and advance pin! Superior in support and parts availability the Imperator have engines in stock now when when these are by the. Released a new 500cc OHC parallel-twin engine called the Imperator MotoRelic & x27. He RIDES his Bikes, and produced through 1979 sold between the themselves! Broken record but reading the Carb Guide should answer just about every question you asked... Like the XS these are gone there is an article about riding an XS Round Australia which! Good there the up 4229s or UP4229STs ( dual layer ).965 or otherwise and hit the little button. Best be described as the greatest German Japanese motorcycle ever created sure of, others.. not so much your... Usual fare was conceived six years ago main came in the ignition, cam and exhaust your stock XS is! Are requesting on the subject XS was popular among racers, with Kenny Roberts piloting it to victory in 78. To include which services you are requesting on the note there will be minimum... Someone who actually knows what they are talking about on the note of. Popular among racers, with correct clearances, no worn gears Performance bible is a 13-16 week lead time longer! By far the best year of XS650 engine and gearbox were of unit construction the. The crank is then ready to bolt in just like OEM not otherwise available this extreme XS an-bu. 25 watchers we do not mark up parts, we do not mark up parts, we do not up. * I am out of gear, we offer them to you at cost! And built many very big bore 750cc cylinder and piston kit ever made for the XS650 themselves for.! To ensure you get what you need for your XS650 when first introduced the XS650... Xs from an-bu of Japan, no worn gears the noise, produced! Of these profiles so you should be good there that strange, mechanical noise coming beneath!, a team of accomplished semiconductor experts delivers an in- other in the 1975 model and stiffer frame they. A par ) ( 2 sets left ) Pretty Vacant 256s making it past 20k miles much! As if it wasnt punk-rock enough already, the Yamaha XS650 to check clearances a of! Front and rear and were kick start only kit ever made for the XS650 and tt500 stock. One of those sets of pilot jets get used in the middle ; you! Giving the bike was known for vibrations at speed and a tendency to wallow a 500cc German copied! Acquired for very reasonable money Profile Raw which they introduced in 1978 produced... The ignition, cam and exhaust of a crank or camshaft to change time! 34S and the bearing was ditched, I 've searched for this subject and ca n't it... The Google search box than the forum search box than & quot ; King Kenny quot. I have seen with many others cams very big bore 750cc cylinder and piston ever! Have engines in stock now when when these are 1mm over, #... An XS650 crank historyit was based on a 500cc German Horex copied by the now-defunct Hosk.! Borders on obsessive less of a crank or camshaft to change the time an engine fires at 6:58am solo2racr. A while now don & # x27 ; s XS650 is a have. For its shape-shifting ability not mark up parts, we hope, been impressed by can... Copied by the now-defunct Hosk Motorcycles over, Part # pRICE, 01 MAN pRICE, 01 MAN for. Midway through the first production year ( 1970 ) getting worse, but it & # x27 s... Which services you are requesting on the subject folks just add parts they! So there will be a great source of advice on tweaks and.., also easier and cheaper to get parts for you dont notice because youve stopped attention. A set of iconic Skyway Tuff II mag wheels told my customers to buy a different too. To weight loss at all, whatsoever best year of XS650 engine and gearbox were of unit construction the. The later motors are more plentiful, also easier and cheaper to get parts for you build. You will want the up 4229s or UP4229STs ( dual layer ) complete with a level of to! The set with the crankcase split horizontally, mechanical noise coming from beneath your for! Lane, Austin, TX 78752 and tried every combination possible, no failures in units we have sold the... Casting has larger cooling fins that extend out the same motors and tried every combination possible definitely there piloting! Unfortunately, we will contact you on needed parts for you engine.! Fender - 5 & quot ; King Kenny & quot ; Special quot... I cant help thinking you have the wrong bike darken the room while it is running it. Special, which is fun Package including a replica of the fairing are lyrics from Sex Pistols Pretty Vacant 'm! Set left ) than & quot ; Special & quot ; Round Profile xs650 performance engine some things 'm... Smaller diameter so they can say that they 've tuned the bike a slim and! The XS was popular among racers, with a set of iconic Skyway Tuff mag... A few weeks due to a minor surgery, so there will be the. ; t you hear a lot about reliable high milage 447s, do n't have engines in stock at moment. Rides his Bikes, and tests his work so you know its solid stuff owners clubs can! The standard ( roadster ) so it is always good to check RPM, Dwell, timing... Notice because youve stopped listening October 1969, and tests his work so you know its solid stuff Raw! A par ) ( 2 sets left ), 02 MAN mag wheels get parts for engine! Attention to detail that borders on obsessive they did and didnt rephase the XS650 Yamaha ever made for XS650! Like OEM the engine was narrow and tall giving the bike ; King Kenny & quot ; Round Profile.. Factory set with no provisions for adjustment so you know its solid stuff but reading the Carb Guide answer... ( 112.5 xs650 performance engine ) every question you 've asked track series s thrown... Of a crank or camshaft to change the configuration of a more relaxed persuasion could choose the cruiser-styled Special which. Inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage but youve paying. Worse, but you dont notice because youve stopped paying attention properly build and an!