xs650 performance engine

For the uninitiated what is the best year of XS650 engine and why? 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! The set with the 135 main came in the 78 or 79. Maybe its always made that sound. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. 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. *I am out of the shop for a few weeks due to a minor surgery, so there will be a delay. and the Standard size piston has.945 marked on its top (the 74 is always dropped). Ship your well packaged Crank and Cam to us at the address on our Contact Page. In 1948 they began by releasing a 350cc single-cylinder motorcycle which they called the SB 35 Regina. ), which would translate to 78 HP in comparison to the stock machine. The XS650 is a bike with a long and solid history. Dont you hear it? Wait, do you hear that? The title Performance Portfolio implies that there may be technical details that are not otherwise available. Its getting worse, but you dont notice because youve stopped listening. Engine mods aboundthe most noticeable being a 750cc big-bore kit. Kits come with pistons, pins clips and rings . + Postage. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. We have hundreds of folks who have done this modification at home, with basic handtools, using our provided Rephased Crank and Cam. The reproduction isnt great and can be blurry, and the presentation of the text is challenging. 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. These days the services he can offer are: Yamaha XS650 engine rebuilds, precision rebores, crank and clutch rebuilds, 277 rephased and 360 cranks. Spains La Corona Motorcycles created the perfect city runabout by stripping the XS down to its essentials, then building it up again with a new, slimmer profile. XS650 Camshafts are rephased 100% in house as well. Fitted with our XS Performance Camshaft, Dellorto Carbs, a free-flowing Exhaust and Iridium spark plugs will result in about 65 Rear wheel Horsepower or more and 50 foot-pounds of Torque. Oversize pistons are marked in mm. I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. Shop our selection of engine components for your vintage or modern classic motorcycle. 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. Of course you can, but you've stopped paying attention. Have you lost an engine case bolt, or are you dressing up your vintage restoration project? 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. 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. the engine is remarkably smooth for a vertical Twin, although some low-level vibration can be felt through the handlebars and footpegs. Part# 256LRfor256 long rods motors $685.00 (a par) . 120.00 + 12.50 Postage. I figure it would be a good frame to tuck a 650 into. Yamaha - Xs650 Select a Year. We also have valves and valve shims for your bike, as well as many other vintage Japanese motorcycles. This being characteristic of their history it should come as no surprise to anyone that in the aftermath of World War II the Japanese would enter into the world of business and manufacturing and within a couple of decades be making motorcycles so good that the British were unable to compete. 100% checked gearbox, with correct clearances, no worn gears. [More about this bike | Red Max Speed Shop]. It may not display this or other websites correctly. Nope. Despite trying every carb available the standard BS38 are excellent - with Amal being amongst the best too. 28/02/2023. 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. Model XS650. And a bit more reading, 277 Rephased Goodness from the vaults of the internet! XS 650 Yamaha racing crankshaft by Chris Applebee Engineering we specialise in dynamically balancing & OVERHAULING all motor bike crankshafts If you have . 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. Pistons are 9.5 to 1 compression ratio. 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). Heiden Tuning powered by Skrn is a motorcycle store specialised in the Yamaha XS 650's and TX 650's. All highly desirable things when you're building a performance engine. Read more on rideapart.com. 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. This deviation from MotoRelic's usual fare was conceived six years ago. Its a perfect match for the British racing green Storz tank. Does not apply. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. 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. They only made them from 1970-1983. rideapart.com - Dustin Wheelen 13h. Ripper pushbike. to all who have posted!! I've searched for this subject and can't find it so sorry if it's already been discussed. First, "THANKS!!" Engines feature: There is a 3 months warranty on all engines (except racing engines). Its subtle, but its definitely there. OS is marked 0.50 etc. One sign of a mechanical mind is noticing a slight change in the normal operation of a machine. 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. Shell/JE 700 piston sets, top quality forged pistons. The New Cylinder Block has longer fins matching the Head Fin Length. 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. 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. Its a beautiful day for a ride. As with all performance parts it is always good to check clearances. When first introduced the Yamaha XS650 developed a reputation for poor handling. We fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. Pikes Peak winner builds a 775cc twin motocross machine! 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) - Opens in a new window or tab. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. In good shape. Stock Piston size is around 74.945mm. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Like I said, my experience is very limited. We can machine and Rephase any OEM or Reground Camshaft**. UPC. The finished bike's performance is much more than impressive numbers. The frame number matches the engine perfectly. An-Bu Skull Tiger Its always refreshing to see a bike that bucks trendssuch as this extreme XS from An-Bu of Japan. Ring End Gap (measured in cylinder) should be a minimum of 0.008 and Oil rings should have a minimum gap of 0.012. If you want smooth freeway riding, get a Honda four. 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. Part# 302957 for your 256 motor $300.00 (1 LEFT), Part#347370 for your 533 motor $300.00 (1 LEFT. Don't you hear it? It turns over with compression. We only use cookies to give you the best experience on our site. We offer a wide range of XS / TX 650 products, see our webstore. If my memory can be trusted there was a very early version of the 256 engine that used a bearing in the small end of the rod. So, that thought in mind, I go forward: Have you cleaned the carbs and checked the float levels. The engine wasnt counterbalanced to remove that vibration. 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. . $226.48. 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. If you think you hear something, you almost certainly do. Consider making a donation to help support the site. 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. Theres a pinging sound coming from your engine. 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. 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. 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? Fast and lively is fun, but reliable and easy to work on are also fun, and a bike that doesnt leak oil on your apartment floor is preferable to one that does. There's a pinging sound coming from your engine. The 2into 1 usually needs a jet change. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. This 650cc parallel-twin with its horizontally split crankcase that did not leak oil like the vertically split British bikes did was a potential world beater yet Yamaha did not instantly set out to use it as their Brit bike beater but it languished for a few years before it was decided to fit it into a motorbike chassis and try to sell it. They are also a lot smoother. Performance Tool W1189C SAE Offset Distributor Clamp Wrench. 500 parts/price list. At some point in their learning process, most riders will discover that their motorcycle has developed a new, odd sound. This does not include and parts that may be needed. Dan at Pandemonium Customs builds a killer 277 Ignition System. Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. Design limitations are found in exhaust port shape and cross sectional area-too large. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. GET THE WORLD'S BEST CUSTOMS DELIVERED TO YOUR INBOX. Ripper to match it, complete with a set of iconic Skyway Tuff II mag wheels. 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 . The piston wristpins were a smaller diameter so they and the rod small eye wear quicker. It outperforms any other free-flow bike pipe on today's market. When new, your now-vintage motorcylce ran like a jet fighter. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. It could be something extremely minor, like running too-low octane fuel. Oil channel for enhanced piston pin oiling. These are 1mm over, PART# pRICE, 01 MAN . In the meantime Yamaha worked on making a new and stiffer frame which they introduced in the 1975 model. It feels like the Yamaha XS650 has been around forever, and that's not far from the truth: it was offered in various guises from 1968 until 1985. It will do two things for certain; it will make the engine sound like a 83 or 90 V-Twin (if we are talking about an XS650 rephase) and it will possibly run a hair smoother at higher RPM (but this is arguable). 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. Posted Over 1 Month. High Performance Compute and System-in-Package, a team of accomplished semiconductor experts delivers an in- . 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. 180 would mean they are at opposite sides). As for if a rephase gives you any more power? I was thinking about doing the 750 thing you just mentioned, a few reasons I don't want to, 1 my insurance premium in the UK will rocket (unless I don't declare it which is illegal), also if I throw too much money at a the XS650 I may as well buy a Royal Enfield Interceptor there is one complete one that needs fettling on ebay for around 5000 and lastly a 650 parallel is enough for any man! Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. Shipping and handling. In the Russo-Japanese War of 1904-1905 the Japanese beat the Russians both in naval warfare at sea and in a land war. The crank is then ready to bolt in just like OEM. We carry everything you need to fully restore your XS650 or the parts needed for the performance upgrade you have been dreaming of. Most cranks come to us in great shape, if yours needs components, we will be in touch. 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. AS A YAMAHA XS650 owner struggling to keep my recalcitrant but beloved mount rolling over a 25-year period, Ive often been frustrated by the lack of information available about the model, apart from my grubby Haynes manual, which can lack important information. No. Oh, and spend a little of that to make sure your stock XS engine is tuned and running right. Yamaha's XS650 is known for its shape-shifting ability. I'm confused. 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. , we hope, been impressed by what can be done with the XS. 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." Rock solid timing, no failures in units we have sold between the xs650 and tt500. All profiles are. Other changes also needles and needle jets so the 135 main would not work well in the carbs with 122.5 main. And, to some degree I acquiesce to both. . 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. Whatever it is, if your engine is running well enough to make the noise, youve caught it at the right time, and your vintage motorcycle will appreciate your getting to the bottom of it. Free shipping on many items | Browse your favorite brands . XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lillie . Not to mention variations from ignition, exhaust, cam and carbs etc. ***All of our exchange services are based on cash/check/money order pricing. Have a engine built to your desired specs. La Corona also removed the starter motor, fitting an electronic ignition to make kick starting easier, and relocated the ignition to the new under-seat battery box. [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 tail unit has a classic flat tracker shape, but is made from carbon fibre. 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. We have used this in place of the PVL system after Penton racing retired. Less weight reduces ring groove pound out. 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 problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. This bike, or rather the engine of this bike, is the grandparent of the Yamaha XS650. 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. Mornington, VIC. you never said that you ensured it is timed properly. 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). Steel Rear Sprocket, 38Tooth ( 73-83)TX/XS650. The few technical articles dont give you any information you cant get from Haynes. 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 . 4. Two-Stroke Performance Tuning - A. 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). Before the engine work, the redline topped out at 8500, but Hal's happy that with the engine's performance parts, the engine revs easily to 9200 without objection. Once the rods and outer flywheels are installed, the crank is fully trued in our fixures and given a final rod pin TIG Weld to each end for the ultimate in reliability and performance. We are always taking in Crank and Cam Rephase Services. The "Special" cruiser model was introduced in 1978 and produced through 1985. 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. Road. These bikes have been customised into every conceivable form you can imagine from caf racer to chopper to bobber to flat tracker or just enjoyed bog standard as a fun way to get to work each day. 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? 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. If only shipping a cam, $12 is the return shipping cost. I would wager (any amount) the gas-flowed one would dyno better if an equal budget is applied. No modifications to engine cases needed. Last one. Was: $26.99. Powered by Gasoline and Caffeine. 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. Too much internet bunkum out there, So Thank You! 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. The tank is from a Suzuki DS, finished in a tasteful two-tone paint scheme. $1,100.00. Wedged between them are a wood-clad Yamaha XS650, and the wildest supercharged Honda CBR900 we've ever laid eyes on. Engines come without carburettors/ ignition / alternator. Manufactured originally by Hosk, then having been sold to Yamaha . Kits Includes: Forged Wiseco 80mm Pistons, Rings, 20mm Pins and Clips LA Sleeve General : 727.342.5601 Toll Free : 1.888.792.0692 . Excellent For Use With Supercharged, Turbo Charged Or Nitrous Oxide High Performance Engine Safely Blends And Is Compatible With Synthetic And Non-Synthetic Oils $11.34 - $12.91 Lucas Oil Low Viscosity Oil Stabilizer, 12 fl oz (11097) Part# HRS stk-465 $345.00 special order email me, All extra piston clips20mm and 22mm package of 2 clips$2.50. It could be a lean mixture, or it could be a poorly timed ignition spark. It had the smooth, buttery sound of a brand-new Ferrari, only meaner. Our previous Top 5 covered the Harley Sportster. The later motors are more plentiful, also easier and cheaper to get parts for. The group consisted of Fabien Tourlan, otherwise known as "l'Atelier Les Bcanes", who specialises in vintage motorcycle restoration, Aymeric Romanowski of Atelier WIK and Bernard Christy, who deal in parts, and David Gallet Dadygraph and Laurent Chapus of Neway Designs . The Stage I bike is good-handling, fast, responsive . Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. Since writing the initial article, we have worked on a rephased XS650 with a JE 750cc kit, gas flowed head and a Shell No.1 cam and we can categorically tell you that the rephase didn't really help with vibration, and It was also a complete pig to kick start as you have two compression strokes right next to each other (it may also be noted that I personally only weigh 140 lbs and have the legs of a chicken, but I do also ride an XT500, so I feel I'm used to a firm kicker).So, I am sticking to my original thoughts and still think money can be better spent elsewhere. Yamaha xs 650 chopper bobber Exhaust Downpipe. piston pins that are internally tapered to ends for weight reduction. Key in the ignition, pull the choke and hit the little black button (or kick her over if youre legit). We offer his kits in our store, or you modify an existing points ignition to run the rephased crank and cam. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. 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. We do not mark up parts, we offer them to you at our cost. New Manley Stainless steel valves. Core charge if you don'thave a cam is $50.00. [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. Its a little more playful than Classifieds usual fare, but Rylands signature touches are still theresuch as the nickel-plated tank and perforated panels on the tail. 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 fully inspect the lobes, bearing surfaces and advance unit pin location for any wear/damage. They also do the 270 and 277 with any of these profiles. You may want to visit this post for some excellent info; Have you read the carb guide. 42MM INTAKE VALVE$52.00 (SOLD OUT), 02 MAN. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. 2nd. Below 4000 rpm. 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. The Japanese are an interesting people. The New Cylinder Block has longer fins matching the Head Fin Length. . 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. The XS650 has a broad powerband and runs easily at low rpm. 80 YAMAHA XS650 XS650SG SG XS 650 SPECIAL AIR FILTERS. 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! Engine Complete Big Bore Kits ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. 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. Pistons. 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. I also believe the 447 superior in support and parts availability. Standard original piston size varies slightly so the piston may also be marked .965 or otherwise. 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. If you start with a 495 lb Special and cut that down to 380 lbs (very do-able), that would be (assuming a stock HP of 48, which is what most good Specials dyno at) would give you an effective 64 HP (compared to the stock machine), which is highly modified XS650 territory. Fully revised with the latest information on all areas of engine operation, from air and fuel, through from United Kingdom. Putting your head in the sand is no way to be a responsible vintage motorcycle caretaker. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). It isnt. I'm thinking the title should be "my bike won't pull above 5K" and be done with it. FWIW, I've found I have better luck using the Google search box than the forum search box. I have these in 447,256 and 533. Shell#1 camshaft, best all around cam for track or street. The 750cc conversion is always fun. It was built for the 2013 Yokohama custom show in An-Bus signature stylepart Mad Max, part Tokyo street culture. mileage seems to be in the 42 to 48 range. The other end of the scale is a single cylinder, which has a very different feel. Not sure why they did that. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 Engine. The Yamaha XS650 had a lot of other things going for it. Youve been hearing that strange, mechanical noise coming from beneath your tank for a while now. Most of the XS650s power comes from the cylinder head.

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