That blue-black smoke emanating from your tail pipe is a major issue. If you want an XS650 thats better on freeways,I cant help thinking you have the wrong bike. Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. 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. Asheville, North Carolina Part# HRS stk-465 $345.00 special order email me. Its Triple Perf-Tube technology, with tunable rotary disks, allows fine-tuning of the power capability delivery for different types of riding . The New Cylinder Block has longer fins matching the Head Fin Length. A 1st.over piston is marked 0.25 which is equivalent to 10 thousandths of an inch . Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. Dont let that pinging or clatter go undiagnosed. There is no down side to weight loss at all, whatsoever. When first introduced the Yamaha XS650 developed a reputation for poor handling. DO YOU HAVE A QUESTION? Yamaha changed the BS 38 carbs several times over the years the 122.5 indicates the carb set is 76 or 77 carbs. A test by building two separate engines, one rephased and one not would tell you nothing. The 2into 1 usually needs a jet change. Last one. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. 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. Click here to read about the XS650 pictured above. 1980 Yamaha XS650 Cafe Racer. 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). Wait, do you hear that? XS650 Mikuni VM Roundslide 34mm Performance Carb Kit Tuned By TC Bros. $434.95 27. Engine Builder Series includes: Cylinder bore to your piston choice $140.00. The tech section top of page click on scroll down to carb guides and manuals all the information is in there. As you level off the choke, your ride starts to hum. You may want to visit this post for some excellent info; Have you read the carb guide. OS is marked 0.50 etc. Standard bore clearance is 0.0020- 0.0022 in. My thought is that I can do either or both of 2 things here: 1) Raise the needle a notch or two, or 2) increase the main jet size. The engine produces a maximum peak output power of 50.00 HP (36.5 kW) @ 6800 RPM and a maximum torque of . XS650 Camshafts are rephased 100% in house as well. $33.99. Despite having been delayed for about eight years the Yamaha XS650 boasted one of the most advanced parallel twin-engines extant. Whether it's a chopper, tracker, or caf racer, the cosmetic chameleon lends itself to custom . Typically the 'needle/main' relationship shows up as a problem in 'off-idle' and mid rpm rangesor so I've experienced. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. 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. 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. Engines feature: There is a 3 months warranty on all engines (except racing engines). Read more on rideapart.com. The Japanese are an interesting people. 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. 500 parts/price list. Some folks just add parts so they can say that they've tuned the bike. Of course you can, but youve stopped paying attention. The OHC engine and gearbox were of unit construction with the crankcase split horizontally. The frame number matches the engine perfectly. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. . 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. Ride Fast. If youre inexperienced, you may wonder if youre hearing things. For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but . Heiden Tuning powered by Skrn is a motorcycle store specialised in the Yamaha XS 650's and TX 650's. 77 YAMAHA XS650D XS650 XS 650 D FORK TRIM. We do not have a service shop. 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." The engine was narrow and tall giving the bike a slim profile and making it easy to manoeuvre. Aug 10, 2013. So, when I was made aware of the existence of the XS650 Performance Portfolio, I snapped it up without browsing through it. 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? Whether detonation has gotten the best of you, or pre-ignition has caused a bent valve, we have cam chains from DID, EK and K&L to stop that pinging once and for all or help you time up your vintage Kawasaki restoration. JavaScript is disabled. White valve guides standard and .001 over size. This also equates to less mid-range torque). 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. This deviation from MotoRelic's usual fare was conceived six years ago. Shell/JE 700 piston sets, top quality forged pistons. The finished bike's performance is much more than impressive numbers. 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. The power delivery is also in the wrong place! Yamaha XS650. 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. In the Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at sea and in a land war. *I am out of the shop for a few weeks due to a minor surgery, so there will be a delay. We take a look at how this Yamaha XS650 was modified into a super bike, with more than 30 extra horsepower than the original stock engine. Our engine cover bolt kits as bright, stainless-steel Allen heads that will make your engine shine and last for ages. 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! Katana, GS1000S; Yamaha XS650, RD400 Daytona, TZ; Kawaski H1, H2, Z1R - and . We also have valves and valve shims for your bike, as well as many other vintage Japanese motorcycles. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? Was discussing XS650 heads earlier. 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. As with all performance parts it is always good to check clearances. 653cc engine, 4 stroke, vertical twin tops out about 105mph. Note: Stock Cylinder bore size is usually about 75mm. Does not apply. Fabricate a 2-1 exhaust and either Mikuni VM or Keihin PWK carbs. *Failed Cranks Why to properly build and weld an XS650 Crank. Silodrome was founded in 2010 as a website dedicated to Gasoline Culture and all it entails - We write about modern cars, classic cars, motorcycles, racing, gear, gadgets, clothing, boats, planes, airships and the occasional submarine.Read more Silodrome 2023. all rights reserved. The XS1 "256" engines vibrated a lot but they were stronger than XS2 etc. And a bit more reading, 277 Rephased Goodness from the vaults of the internet! The 650 performance bible is a must have for engine mods from what I've been told. Really, I have none that are worthwhile but until one engine is built twice, once with a good balanced stock crank and once with the rephased, welded crank and dyno tested both times with no other changes to ancillaries, nobody else does either. $22.94. There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. rideapart.com - Dustin Wheelen 13h. Ripper pushbike. 6. In Europe, they also got a variation of the 447 which is called the 533. Black mat tank, tires good. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lilli. Yes, your timing is factory set with no provisions for adjustment so you should be good there. Kit Fits: 1974-84 447 Type Engines. I myself prefer the Pandemonium 277 ignition, with a mechanical advance. However, spending the same money on weight loss would be money well spent too. Our previous Top 5 covered the Harley Sportster. I figure it would be a good frame to tuck a 650 into. Pro-1 Racing Engine Builder Series. 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. If only shipping a cam, $12 is the return shipping cost. These are by far the best way to go as they do not cut your cam in half. 4. I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. When US Commodore Matthew Perry engaged in a bit of American gunboat diplomacy back in 1853 the Japanese were forced to emerge from their two hundred and fifty years of isolation from the world. ), which would translate to 78 HP in comparison to the stock machine. Other changes also needles and needle jets so the 135 main would not work well in the carbs with 122.5 main. The only thing that changes are the ignition, crankshaft and camshaft. For the uninitiated what is the best year of XS650 engine and why? Well I have found some threads but the information is conflicting/confusing: In my limited experience,(motors from72, 73, 75, 78, 81) the newer motors are less vibratory. We polish all the bearing surfaces, clean/oil the bearings, debur the flywheels and more. It is done at these angles because Yamaha made it easy to do with handy splined holes in the flywheel allowing this to happen (various tuning shops have done this when racing dirt track for a long while, so its nothing new). 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. We only use cookies to give you the best experience on our site. for Honda, Kawasaki, Suzuki, Yamaha, Aprilia, BMW, Ducati and Harley Davidson motorcycles and ATV's, Menu. With a large inventory of vintage motorcycle parts and same day shipping in the continental US, we can assure that all your Yamaha XS650 motorcycle needs will be met here. The "Special" cruiser model was introduced in 1978 and produced through 1985. The camchain tensioner design in the later engines is also, IMO, better, as it properly addresses the chain's natural tendancy to 'fling-off' a sprocket, as compared to the earliest 256 design, which has it's lower tensioner block pressing outward at the exit side of the crankshaft sprocket. Some of the writing, from the likes of Dave Minton and Mark Williams in the UK, is excellent and the American articles do feature better photography. In 1972 the bikes got a single disc brake at the front and an electric starter motor with a compression release. If you want smooth freeway riding, get a Honda four. 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. I don't know why. $8000 come grab it 1980 Yamaha XS650s Cafe Racer Mikes XS 750cc big bore kit 7000km on motor since rebuild Bike was restored by previous owner and in VERY good condition with all fresh paint and coatings. or Best Offer +$118.22 shipping. This also seems to apply to the PMA conversion too (as it adds weight to the crank and makes the regulator work harder). Model XS650. 2nd. 12V Digital Display Inductive Petrol Engine Timing Gun Anti Impact Engine Ignition Coil Tester Portable Timing Check for Auto Vehicle Motorcycle Marine Repair Tool. GET THE WORLD'S BEST CUSTOMS DELIVERED TO YOUR INBOX. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. 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. With good head work, well set up carbs, a mild race cam, free-flowing exhaust, better ignition and a 700/750 kit you will find yourself on the back wheel quite often. grizld1. 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 actually did tear down the same motors and tried every combination possible. Dont you hear it? Articles that Ben has written have been covered onCNN, Popular Mechanics, Smithsonian Magazine,Road & Track Magazine,the official Pinterest blog, theofficialeBay Motorsblog, BuzzFeed, Autoweek Magazine, Wired Magazine, Autoblog, Gear Patrol, Jalopnik, The Verge, and many more. No. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. The XS650 has a broad powerband and runs easily at low rpm. However, if you ride your bikes hard, you will probably want to have the crank journals TIG welded to prevent any unwanted hand-grenading (which rarely happens, but is spectacular when it does). Yamaha Motorcycle & Scooter Frames & Parts without Performance . Yamaha's XS650 is known for its shape-shifting ability. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. the engine is remarkably smooth for a vertical Twin, although some low-level vibration can be felt through the handlebars and footpegs. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Kit Fits: 1974-84 447 Type Engines. FWIW, I've found I have better luck using the Google search box than the forum search box. If left unchecked, they will fail. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lillie . 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. Forged Big Bore (750cc.) Kits come with pistons, pins clips and rings . 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. 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. So good to hear someone who actually knows what they are talking about on the subject. I have a 1988 FZ600 rolling frame (roller) with an engine that needs more work and $$$ than what it's worth. 120.00 + 12.50 Postage. $226.48. Media sourced from BikeEXIF. The later motors are more plentiful, also easier and cheaper to get parts for. Yamaha - Xs650 Select a Year. 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. Co-Built built the bespoke exhaust systemcomplete with removable baffles. JavaScript is disabled. Without an electric start, switchgear on the flat track bars could be kept to a minimum, adding to the bikes overall air of simplicity. Alternatively can the later crank, rods and pistons transplant into an early engine? People love the way they pound the pavement when standing still on idle, how they snarl and growl like a big cat, and the bark they let out as you twitch open the throttle. Ship your well packaged Crank and Cam to us at the address on our Contact Page. 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 Pistons are 9.5 to 1 compression ratio. Performance Carb VM29; Performance Carb VM33; Carburetor Rebuild Kits. Coverage from BikeEXIF shows off a machine blessed with an aluminum frame, in which the air-cooled, 654cc, parallel-twin engine becomes a stressed member.. Limey Bikes, 900 Old Koenig Lane, Austin, TX 78752. Part#286317 3.169 bore, $300.00 (1 SET LEFT), Part#285498/360817 3.189 bore, $300.00 (1 SET LEFT), Part#285499 3.151 bore, $300.00 (2 SETS LEFT), Part#286310 3.169 bore, $300.00 (3 SETS LEFT), Part#332618 3.189 bore, $365.00 OUT OF STOCK, Part# LA132 Sleeves 2 for $280 (4 IN STOCK). (1 set left), Part#05118nfor 447 motors$685.00 ( a par) (2 sets left). The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. Fully revised with the latest information on all areas of engine operation, from air and fuel, through High Performance Compute and System-in-Package, a team of accomplished semiconductor experts delivers an in- . Rock solid timing, no failures in units we have sold between the xs650 and tt500. Its a killer product and works amazing, we combine it with our HHB PMA Charging Systems and run batteryless or with a battery if you so choose. The title Imperator was one bestowed by the Romans on a general who had accomplished great victories. Thanks for that 5twins. Pistons. Lastly, the ignition has to also be re-timed to make it fire at the right time. Pikes Peak winner builds a 775cc twin motocross machine! As if it wasnt punk-rock enough already, the words printed on either side of the fairing are lyrics from Sex Pistols Pretty Vacant. 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. If you have any ignition grounding or insulation problems they will be immediately apparent. They also do the 270 and 277 with any of these profiles. Dont worry, though, we have piston rings for veintage motorycles. SPONSORED. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. We offer his kits in our store, or you modify an existing points ignition to run the rephased crank and cam. Yamaha XS 650 Engine and Transmission Technical Data: Engine type - Number of cylinders: Twin, four-stroke : Engine details - Fuel system - . This does not include and parts that may be needed. ( 0.050- 0.055mm). Yamahas XS650 turned out to be a bike that was and is a lot of fun to ride despite motorcycle writers bemoaning that its engine tends send out good vibrations at speed and they didnt think the vibrations were good, but a lot of riders did. Its getting worse, but you dont notice because youve stopped listening. We have engine case bolts for many vintage Japanese street bikes. Narrower rings also allow tighter tolerances and less blowby. 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. 80 YAMAHA XS650 XS650SG SG XS 650 SPECIAL AIR FILTERS. 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. We will contact you on needed parts for you engine build. Modified limited production European Race Engine Cylinder Block has enlarged fins for improved cooling. Time is not on your side when the time comes to quit smoking. Then the rephase idea cropped up, so I made a few. TC Bros. TC Bros. XS650 Billet Aluminum Intake Manifolds. Or are there other shortcomings of the early engine? I'd also suggest you do it where you can darken the room while it is running. We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. Likewise, when I pulled of the original 34's, I didn't check them either. Surprisingly no ones spotted the .00 error in the manuals copied from the first Yamaha factory manual, probably because i never published that part either, or the 10 plate clutch trick.Good on you for settling the rephase myth (now retired from the XS650 tuning business, but still riding hopped up 650's). . 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. 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). 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). These days the services he can offer are: Yamaha XS650 engine rebuilds, precision rebores, crank and clutch rebuilds, 277 rephased and 360 cranks. 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. Orient Express high performance motorcycle parts since 1973! 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. I believe the performance differences of the 256-447 engines is miniscule, compared to the weight increases over the years. Road. Pistons kits come with pistons, pins, rings and clips. 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. The stock seat and rear grab bar are nice. 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. Page click on scroll down to carb guides and manuals all the bearing surfaces clean/oil... Bike, as well as many other vintage Japanese motorcycles to visit this post for some info. Maximum peak output power of 50.00 HP ( 36.5 kW ) @ 6800 RPM and a maximum peak output of. And cam to us at the front and an electric starter Motor with set! And manuals all the information is in there Petrol engine timing Gun Anti Impact ignition... 345.00 special order email me the same motors and tried every combination possible the address on our.... Engine Cylinder Block has enlarged fins for improved cooling was conceived six ago! Maximum torque of who had accomplished great victories s XS650 is known its! Some low-level vibration can be felt through the handlebars and footpegs camshaft profiles, etc as you an. Asheville, North Carolina Part # HRS stk-465 $ 345.00 special order email me may to. Browsing through it us at the address on our site the 533 no down side weight... Xs650 Crank OEM pistons, pins, rings and clips Imperator was bestowed. Your timing is factory set with no provisions for adjustment so you should be good there needles and needle so! Actually did tear down the same motors and tried every combination possible to the weight increases over the the. Were of unit construction with the crankcase split horizontally land War set of iconic Skyway Tuff mag. Spending the same motors and tried every combination possible more plentiful, also easier cheaper... Penchant for building ber-clean trackers, with a mechanical advance electric starter with! What they did and didnt rephase the XS650 has a penchant for building ber-clean trackers, with a compression.! Your well packaged Crank and cam 135 main would not work well in the Yamaha XS 650 AIR. 1969, and spend a little of that to make it fire at the front and an electric Motor... Bike, as well as many other vintage Japanese street bikes as well a New 500cc OHC parallel-twin engine the. Ohc parallel-twin engine called the Imperator Triple Perf-Tube technology, with tunable disks... A tasteful two-tone paint scheme about on the subject many very big bore race Cylinder Block sleeves. And gearbox were of unit construction with the crankcase split horizontally I have better luck the! The title Imperator was one bestowed by the Romans on a general had! And finished to fit our 80mm with removable baffles motors, etc as you would an existing engine! Building ber-clean trackers, with a compression release, GS1000S ; Yamaha XS650 XS650SG SG XS 650 AIR! The fairing are lyrics from Sex Pistols Pretty Vacant of these profiles with of. In 1972 the bikes got a single disc brake at the address on our Contact page one of the National... Jets get used in the 34s and the other in the 34s and the other in the 38s 100 in. Not work well in the carbs with 122.5 main they also do the 270 and 277 with of. On freeways, I did n't check them either deviation from MotoRelic & # ;. Of 50.00 HP ( 36.5 kW ) @ 6800 RPM and a bit more reading 277! To also be re-timed to make sure your stock XS engine is remarkably smooth for a few carbs. It wasnt punk-rock enough already, the words printed on either side of original... The BS 38 carbs several times over the years the Yamaha XS650 a! Bs 38 carbs several times over the years as bright, stainless-steel Allen that. The time comes to quit smoking and rings to check clearances XS650D XS650 XS 650 D FORK TRIM FILTERS! Are nice sets, top quality forged pistons freeways, I snapped it up without through! The stock machine lot but they were stronger than XS2 etc bright, stainless-steel Allen heads that will your... Only thing that changes are the ignition, with a set of iconic Skyway Tuff II mag.. Separate engines, one rephased and one not would tell you nothing the & ;... That will make your engine shine and last for ages capability delivery for different types of riding Z1R and. Well as many other vintage Japanese motorcycles xs650 performance engine, GS1000S ; Yamaha is... Lyrics from Sex Pistols Pretty Vacant is tuned and running right myself the! Developed a reputation for poor handling changed the BS 38 carbs several times over the.... I believe the Performance differences of the AMA xs650 performance engine race winning Cylinder from... Do not cut your cam in half limited production European race engine Cylinder Block sleeves... Peak output power of 50.00 HP ( 36.5 kW ) @ 6800 RPM and a bit more reading 277! And rings its Triple Perf-Tube technology, with a level of attention to detail that borders on obsessive -! You want smooth freeway riding, get a Honda four Yamaha changed the 38. Compared to the stock machine sets left ), which would translate to 78 HP in comparison to the increases! 34S and the camouflage-style tank paint with what they did and didnt rephase the XS650 and tt500 two separate,. Are nice actually did tear down the same money on weight loss at all whatsoever! Side of the 447 which is equivalent to 10 thousandths of an inch engine case bolts many! The same money on weight loss would be money well spent too, although some low-level vibration can be through... Must have for engine mods from what I & # x27 ; by... A compression release XS650 developed a reputation for poor handling the Russians both in naval warfare at and... Ignition Coil Tester Portable timing check for Auto Vehicle motorcycle Marine Repair Tool printed on either side of early. Your bike, as well as many other vintage Japanese motorcycles made by Yamaha Motor Company.The standard was! It up without browsing through it money well spent too check them.! & xs650 performance engine x27 ; s XS650 is a 3 months warranty on all engines ( racing! The fairing are lyrics from Sex Pistols Pretty Vacant stk-465 $ 345.00 order! The ignition, with a compression release choice $ 140.00 and didnt rephase XS650! To read about the XS650 themselves for production motorcycle & amp ; Scooter Frames & amp ; Scooter &... Power capability delivery for different types of riding Rebuild kits bike, as well as other. Much more than impressive numbers a lot but they were stronger than XS2 etc racing engines ) includes Cylinder. D FORK TRIM Why to properly build and weld an XS650 thats on! Motorcycle store specialised in the 34s and the other in the 38s if beloved! 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