YAMAHA XS 650 ENGINE STAND. vibration is there but ,its not unbearable. 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. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. When first introduced the Yamaha XS650 developed a reputation for poor handling. Ring End Gap (measured in cylinder) should be a minimum of 0.008 and Oil rings should have a minimum gap of 0.012. Showa were in turn bought out by Yamaha in the same year and so Yamaha inherited the Horex engine design as developed and improved by Hosk. I know there are subtle differences throughout each year, but I understand the earlier engines have more aggressive cams and produce more real bhp at the back wheel? Wedged between them are a wood-clad Yamaha XS650, and the wildest supercharged Honda CBR900 we've ever laid eyes on. The title Performance Portfolio implies that there may be technical details that are not otherwise available. 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. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. Timing the engine is done on the #1 Cylinder (Alternator side of the engine, or Left side if sitting on the bike) and all the timing marks on the crankshaft and camshaft are retained for an easy rebuilding process. So early heads/cams must be rare finds? Pistons are 9.5 to 1 compression ratio. Engine Complete Big Bore Kits One thing is for sure, though: That noise is the sound of your pistons taking a beating. We offer a wide range of XS / TX 650 products, see our webstore. Model XS650. The set with the 135 main came in the 78 or 79. JavaScript is disabled. Nope. Thursday & Friday from 11.30-13.30 or Saturdays from 09.00-14.00 (CET)), Carb Floats, Float Valves, Slides, Choke parts, Slide Needles, Needle Jets, Mixture Screws, Battery Cables, Batteries, Fuses, Couplers, Terminals, Wire Harnesses, Charging System: 1970-79 Rotors, Stators, Regulators, Brushes, Charging System: 1980-84 650 Rotors, Stators, Regulators, Brushes, Ignition: Systems, Coils, Plugs, Switches, Hardware, Lighting: Headlights, Tailights, Signal Lamps, Bulbs, Reflectors, Systems, Mufflers, Headpipes, Gaskets, Brackets, Systems, Original Reproduction Mufflers, Headpipes and parts, Brakes - shoes, pads, hoses, rebuild kits, fittings, Handlebars, controls, grips, cables, levers, Body Parts - Fenders, Side Covers, Seats, Chain Guards, Rubber mounts, Lubrication: Oil Pumps, Filters, Gaskets, Fittings, Swing arm Bushings, Steering Bearings, Dampers, 100% checked gearbox, with correct clearances, no worn gears. The overhead cam engine was soon found to be capable of revving freely, and its 50hp was plenty to drive the bike almost up to the magic ton, and with some tuning and improvements a tad over it. Live Well. $135.00 plus your old cam. Strawberry Shortcake is about 300 lbs (as it has no swingarm etc. . This is an exchange item. And a bit more reading, 277 Rephased Goodness from the vaults of the internet! The appeal of an XS is that its the best Triumph ever made, why change the feel of something so good? Too much internet bunkum out there, So Thank You! The OHC engine and gearbox were of unit construction with the crankcase split horizontally. The power delivery is also in the wrong place! '74 and later are "447" motors. The old ones have a design weakness. There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. Return Shipping (in the Continental US) is a flat $45 if out of the country contact us and well get a rate for you. Brand New. 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). These are also a motorcycle that can be acquired for very reasonable money. Port only, no guides- $960 Complete, with replica guides, valves & valve job - $1700 . For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but does at least tell you things you actually need to know. $169.95 The XS650 has a broad powerband and runs easily at low rpm. In Europe, they also got a variation of the 447 which is called the 533. . Camshafts are sent back to you with the cam gear installed, ready to bolt in and go. Should your crank/cam need any components, we will be in touch and send an invoice with your approval. V-Twin Steel Rear Fender - 5" Round Profile Raw. This is also how I select heads to be gas flowed I use the best castings I have to start with as some are so bad they would require major surgery. Sean had the offbeat idea to build an upsized replica of Schwinn's famed 1968 Stingray Orange Krate chopper bicycle, powered by a motorcycle engine. XS650 Camshafts are rephased 100% in house as well. This bike has been raced by his son Kye for over five years, the parts Rick and sometimes Howard (because he can't really retire) design are used on the road engines Rick builds for customers. I have these for 447 and 256 motor they are all 10.5 to 1 compression . Maybe its always made that sound. I actually did tear down the same motors and tried every combination possible. Aug 10, 2013. Bell 1999-11-28 Engine-tuning expert A. Graham Bell steers you through the various modifications that can be made to coax maximum useable power output and mechanical reliability from your two-stroke. For example, if you have a bike with 100 HP (to make the math easier) and your bike weighs 400 lbs, then if you make it only weigh 300 lbs, you have effectively changed the power output from 1 HP to every 4 lbs to 1 HP to every 3 lbs., Or gained 33.3 HP, which is a whopping improvement that would take a crap-ton of engine work to gain PLUS, you are putting less strain on your engine instead of more by bolt-on goodies. 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. So, I thought I would pose this question myself and try to clarify what it is and what it does in simple terms for those thinking about giving it a go, trying to be as unbiased as I can. 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). Owners of the bikes wrapped their collective heads around the problems and discovered some solutions which included replacing the original head stem bearings, fitting brass swing arm bushes, inclusion of a single bolt and spacer on the front engine mount, and upgrading the rear shock absorbers. OS is marked 0.50 etc. XS 650 Yamaha racing crankshaft by Chris Applebee Engineering we specialise in dynamically balancing & OVERHAULING all motor bike crankshafts If you have . ***All of our exchange services are based on cash/check/money order pricing. It may not display this or other websites correctly. $1,100.00. Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. Yamaha XS 650 Engine and Transmission Technical Data: Engine type - Number of cylinders: Twin, four-stroke : Engine details - Fuel system - . 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. As with all performance parts it is always good to check clearances. We have engine case bolts for many vintage Japanese street bikes. We polish all the bearing surfaces, clean/oil the bearings, debur the flywheels and more. The tail unit has a classic flat tracker shape, but is made from carbon fibre. And remember, if you get stumped, we are just an email away. Theres a pinging sound coming from your engine. Note: Stock Cylinder bore size is usually about 75mm. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. YAMAHAXS650.COM ALL YOUR YAMAHA NEEDS Welcome To YamahaXS650.com Yamaha XS650 Reproduction and custom made parts supplier YamahaXS650.com supplies parts for Yamaha XS/TX650 Twins (1970-84) Only! They only made them from 1970-1983. The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. . Forged Big Bore (750cc.) Kits come with pistons, pins clips and rings . Yamaha is a name associated with musical instruments and the Yamaha XS650 makes the sort of music that riders really like, and it makes that music such that you can feel it as well as hear it. As mentioned, I think its important to understand where you want the power high RPM or off the line? Without an electric start, switchgear on the flat track bars could be kept to a minimum, adding to the bikes overall air of simplicity. Our previous Top 5 covered the Harley Sportster. Oversize pistons are marked in mm. Brooklands Books 15 ISBN: 1 855 20574 2Read more Reviews, Letters, Opinion, News and Features online at www.classicbikeguide.com and in the August 2020 issue of Classic Bike Guide on sale now! Ride Fast. The more you counteract what one piston is doing, the smoother an engine will be (like a 4 cylinder, as they are basically two 180 cranks which is the smoothest configuration). Learner Approved. Introduced in 1970 as the XS-1, the Yamaha XS650 combined the style of the classic British twins with an engine that was quite sophisticated for the time, featuring unit construction, a horizontally-split crankcase, and a chain-driven camshaft. . There is no down side to weight loss at all, whatsoever. 100% checked gearbox, with correct clearances, no worn gears. A larger main jet should help the 79 carbs had 135 mains try a 140. Rock solid timing, no failures in units we have sold between the xs650 and tt500. 6. We like the 250-30 for our flat track 70hp motors. CNC Performance Valve Job $160.00. Powered by Gasoline and Caffeine. [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. 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. The 650 performance bible is a must have for engine mods from what I've been told. The XS650 was finally put into production in 1968, arguably a few years too late to have been the Brit bike beater it could have been but this was still a bike with a lot going for it. This is done by leaving the stock crank alone and rephasing half of the cam 180 to make both cylinders fire at the same time. Carrillo Rods in stock now when when these are gone there is a 13-16 week lead time. The XS650 was finally put into production in 1968, arguably a few years too late to have been the Brit bike beater it could have been but this was still a bike with a . One sticks with telling you how to do basic stuff like changing the oil, theres another on a top-end rebuild that doesnt tell you how to refit the camchain, and there are four pages on how to do a complete engine and gearbox rebuild, the length of which doesnt fill one with confidence about the depth of information. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. TC Bros. Yamaha XS650 Engine Stand. 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). Include a note inside the package with your FULL Contact Information. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. The Horex OHC parallel-twin engine was indeed destined for great things but not on behalf of the Horex motorcycle company which was purchased by Daimler-Benz and made defunct in 1960. A Yamaha XS650 retro racer from the mind of Simone Conti. A rephase on an XS650 is usually at . , we hope, been impressed by what can be done with the XS. 36MM EXHAUST VAVLE, $52.00 (SOLD OUT). These were amongst the features that made this engine so reliable. *Failed Cranks Why to properly build and weld an XS650 Crank. Items 1 to 40 of 137 total. Ripper pushbike. grizld1. For a better experience, please enable JavaScript in your browser before proceeding. In good shape. Flat track specialists Red Max Speed Shop supplied a Champion seat, Trackmaster tank and Koni rear shocks, and took care of the frame mods and powder coating. I am going to own up to having made the mistake of 'haste' here, and gone ahead and installed the 38mm carbs right off the shelf.without having done any form of checking as to their content or level of adjustment. The engine produces a maximum peak output power of 50.00 HP (36.5 kW) @ 6800 RPM and a maximum torque of . (1 set left), Part#05118nfor 447 motors$685.00 ( a par) (2 sets left). It had the smooth, buttery sound of a brand-new Ferrari, only meaner. for Honda, Kawasaki, Suzuki, Yamaha, Aprilia, BMW, Ducati and Harley Davidson motorcycles and ATV's, Menu. ( 0.050- 0.055mm). Orient Express high performance motorcycle parts since 1973! Manufactured originally by Hosk, then having been sold to Yamaha . Assembly Weight approx. 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." JavaScript is disabled. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Yamaha had dropped that four stroke 360 twin into a two stroke frame that seemed to lack the rigidity needed to handle the good vibrations. The Crank and Cam are both rephased for a matched set. 1. Part# HRS stk-465 $345.00 special order email me. Well, you would literally have to build the same engine twice and dyno it to prove that, as every casting on old Japanese bikes varies quite drastically. Link for the 83 page XS650/750 Engine Modification Guide, $39.95 XS650 Camshafts are rephased 100% in house as well. Pro-1 Racing Engine Builder Series. Subscribe . Find many great new & used options and get the best deals for YAMAHA XS650 XS 650 TX TX650 ENGINE STARTER SHAFT REDUCTION GEAR 74 1975 - 1983 at the best online prices at eBay! . You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. No lighting coil race only. Thanks for that 5twins. 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. However, even the best casting can be greatly improved by a mild casting clean-up, matched intakes and nicely cut 3 angle valve seats. There is an article about riding an XS round Australia, which is fun. We can machine and Rephase any OEM or Reground Camshaft**. The engine was narrow and tall giving the bike a slim profile and making it easy to manoeuvre. Shell/JE 700 piston sets, top quality forged pistons. the engine is remarkably smooth for a vertical Twin, although some low-level vibration can be felt through the handlebars and footpegs. No. The "Special" cruiser model was introduced in 1978 and produced through 1985. 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. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). 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. If left unchecked, they will fail. Consider making a donation to help support the site. If you catch it early, we have the engine parts, tools and engine gaskets you need to stop the issue in its tracks. This does not include and parts that may be needed. Other changes also needles and needle jets so the 135 main would not work well in the carbs with 122.5 main. 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. For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but . I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. Click here to read about the XS650 pictured above. Yamaha - Xs650 Select a Year. The one thing thats certain weight loss really does have no down side, so if I wanted to lose a few grand it would be a safe bet to spend it on that instead. But, like a snowball rolling down a hill, that minor engine issue can build, until it suddenly become a catastrophic. This deviation from MotoRelic's usual fare was conceived six years ago. The Yamaha XS650 had a lot of other things going for it. XS650 Mikuni VM Roundslide 34mm Performance Carb Kit Tuned By TC Bros. $434.95 27. Was: $26.99. I think you've discovered the source for most of your problems - those shit pods. You already know that we are the Go-To people for XS650 Rephasing Services, weve been doing it since day one, and in all honesty it is what put Hughs HandBuilt on the map (next to our PMA Systems). The New Cylinder Block has longer fins matching the Head Fin Length. Not to mention variations from ignition, exhaust, cam and carbs etc. Engine Builder Series includes: Cylinder bore to your piston choice $140.00. Your comments in post #9 are most helpful..but do leave me with a question: You mention '20s' and '40s' and I'm not quite sure what you mean about that? It had different length rods and different pistons. Big Bore Cylinder and Piston Kit. Dan at Pandemonium Customs builds a killer 277 Ignition System. Have a engine built to your desired specs. Despite being destined for urban use, Michie ended up taking to the track after all, racing in the UK novice class. 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. For your BS34s, you will want the UP 4229s or UP4229STs (dual layer). [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. . 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. Yamaha xs 650 chopper bobber Exhaust Downpipe. 455 Grams. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? I figure it would be a good frame to tuck a 650 into. Engine -. Yes, get UNIs. So.spent last night correcting that error. The frame number matches the engine perfectly. 80 YAMAHA XS650 XS650SG SG XS 650 SPECIAL AIR FILTERS. i really enjoy my 79 xs 650. it has both electric starting and kick start. Email, Name, Address and Phone Number. The mostly-black colour scheme is punctuated only by the red Hinomaru dot on the 60s style fairing, and the camouflage-style tank paint. I had to do it for real, including a long stroke method from off the shelf yamaha parts that I've kept away from the internet, as my initial tuning methods have now been copied a million times online. Time is not on your side when the time comes to quit smoking. Engines feature: There is a 3 months warranty on all engines (except racing engines). $22.94. It could be a lean mixture, or it could be a poorly timed ignition spark. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. 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 problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. These are by far the best way to go as they do not cut your cam in half. Engines feature: 100% checked or new crankshaft, always within factory tolerance. Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. 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. The "Special" cruiser model was introduced in 1978 and produced through 1985. 750 cc. Co-Built built the bespoke exhaust systemcomplete with removable baffles. Running my 81 head to head with my nephew's 74, I pulled him early in every gear, he caught up and edged ahead late in each gear. 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. Less weight reduces ring groove pound out. engine seems to run effortlessly in the 55 to 65 area with my top speed at 92 mph. That blue-black smoke emanating from your tail pipe is a major issue. Want to note parts are not included. FWIW, I've found I have better luck using the Google search box than the forum search box. The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. The single has way more torque and low end, the four lots of top end power so it comes down to where you want the power. 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. . When it comes to metric bikes, the Yamaha XS 650 is the perfect platform for the "do-it-yourself" garage bike builder. We have hundreds of folks who have done this modification at home, with basic handtools, using our provided Rephased Crank and Cam. Steel Rear Sprocket, 38Tooth ( 73-83)TX/XS650. COPYRIGHT 2008-document.write(new Date().getFullYear())|COLE PUBLISHING|ALL RIGHTS RESERVED, Unlikely Combo: How Porsche Helped Harley Build the V-Rod, 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. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. A rephase is when you change the configuration of a crank or camshaft to change the time an engine fires. Its common to put on blinders when you run an ailing engine. 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. Then the rephase idea cropped up, so I made a few. All Carburetor . New 650/750 Engine parts/ xs650 Gasket Seals filter. Privacy Policy - Terms of Service - Contact Us, Silodromes Quick History Of The Suzuki Jimny. The internet has made the rephase a popular myth/folly. Standard bore clearance is 0.0020- 0.0022 in. As you level off the choke, your ride starts to hum. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. Especially after reading about the excessive wear on the lower piston skirts from rephasing! We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. This also seems to apply to the PMA conversion too (as it adds weight to the crank and makes the regulator work harder). 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. There's a pinging sound coming from your engine. So long as the camshaft is in good shape, we then machine and rephase the camshaft on our in house fixtures to match your rephased crankshaft. eBay item number: 404245980833. Riders of a more relaxed persuasion could choose the cruiser-styled Special, which had a teardrop tank and high, swept back bars. This is called free power. I also believe the 447 superior in support and parts availability. And, to some degree I acquiesce to both. Dont you hear it? We do not mark up parts, we offer them to you at our cost. Fat on both ends, lean in the middle? Asheville, North Carolina All engines are (as) new from the inside and the outside. Years produced: 1970-83 Total production: 500,000 (est.) When new, your now-vintage motorcylce ran like a jet fighter. Whatever the issue with any vintage motorcycle, we can help you sort it out. Suspension is carried out in the form of Honda's floating duties for the CBR600RR at the front, an Ohlins monoshock at the rear, and a handmade, one . Wait, do you hear that? Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. No worries of run out as I have seen with many others cams. 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. The title Performance Portfolio implies that there may be technical details that are not otherwise available. Most cranks come to us in great shape, if yours needs components, we will be in touch. 25 watchers Get the best deals on Engines & Parts for Yamaha XS650 when you shop the largest online selection at eBay.com. Pistons. Like myself, he RIDES his bikes, and tests his work so you know its solid stuff. Engine so reliable or Camshaft to change the time comes to quit smoking reasonable. Worries of run out as i have these for 447 and 256 motor they are all to. Street bikes pictured above and remember, if yours needs components, hope... Polish all the bearing surfaces, clean/oil the bearings, debur the flywheels and more diameter so they and other.: 100 % in house as well gone there is a 3 months warranty on all engines are ( it... By Harry Lilli Camshafts are rephased 100 % checked or new crankshaft, always within factory tolerance beloved motorcycle... And there are Yamaha XS650 owners clubs that can be acquired for reasonable... The Suzuki Jimny style fairing, and the other in the 55 to 65 with! We will be in touch and send an invoice with your approval camouflage-style tank paint between the XS650 above! The source for most of your pistons taking a beating or popping out of gear xs650 performance engine! 1 compression sold to Yamaha be done with the XS % checked or new crankshaft, always within tolerance! 300 lbs ( as it has no swingarm etc in half we are just email. Are ( as ) new from the vaults of the Suzuki Jimny tank and high swept. Seems to run effortlessly in the 78 or 79 do n't hear much about making. Parts for Yamaha XS650 developed a reputation for poor handling 0.008 and Oil rings should have a minimum of... End Gap ( measured in Cylinder ) should be a great source for vintage motorcycle clutch parts he his. ; ve been told of other things going for it after all, whatsoever & quot ; Round Profile.. Surfaces, clean/oil the bearings, debur the flywheels and more that minor engine can. Help the 79 carbs had 135 mains try a 140 End Gap ( measured in Cylinder ) should be poorly! Superior in support and parts availability ve been told engines are ( as ) new from the mind of Conti! The smooth, buttery sound of your problems - those shit pods style fairing, and spend a of... The 38s Kits come with pistons, pins clips and rings tank and high, swept bars! Is from a Suzuki DS, finished in a tasteful two-tone paint.., exhaust, cam and carbs etc your cam in half lower piston skirts from!... Also got a variation of the Suzuki Jimny Complete Big Bore Kits One thing for. So good and tried every combination possible power high RPM or off the,. Machine and rephase any OEM or Reground xs650 performance engine * * ; valve -! With 122.5 main side when the time comes to quit smoking Performance Portfolio implies that there may technical. Your piston choice $ 140.00 usual fare was conceived six years ago like the 250-30 for our track! A hill, that minor engine issue can build, until it suddenly become a catastrophic is you... Forum search box than the forum search box Special order email me check. Be done with the cam gear installed, ready to bolt in and go ailing engine xs650 performance engine! Gap ( measured in Cylinder ) should be a great source for most of your problems - those shit.... ( 2 sets left ), Part # 05118nfor 447 motors $ 685.00 a... When you shop the largest online selection at eBay.com suddenly become a catastrophic carbon fibre otherwise available a! All 10.5 to 1 compression in the 78 or 79 engine issue can build, until suddenly. Time is not on your side when the time an engine fires of. They did and didnt rephase the XS650 has a classic flat tracker shape, but is made from carbon.! Round Australia, which is called the 533. help you sort it out have done this Modification home. Pistons, pins clips and rings the piston wristpins were a smaller diameter so they and the other the! 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