. 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. You're only talking a few HP difference between the two engine styles, not enough in my book to offset the negatives. XS 650 Yamaha racing crankshaft by Chris Applebee Engineering we specialise in dynamically balancing & OVERHAULING all motor bike crankshafts If you have . There is a reason Yamaha went with what they did and didnt rephase the XS650 themselves for production. The few technical articles dont give you any information you cant get from Haynes. XS Performance Big Bore Race Cylinder Block with sleeves installed and finished to fit our 80mm. 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! Your description of a rephased motor is spot on and I told my customers to buy a different bike too! , we hope, been impressed by what can be done with the XS. 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. 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. Lightweight 9:1 compression pistons. No lighting coil race only. 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. It may not display this or other websites correctly. I figure it would be a good frame to tuck a 650 into. Likewise, when I pulled of the original 34's, I didn't check them either. For a better experience, please enable JavaScript in your browser before proceeding. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. In retrospect I should have 0-60 timed the stock bike before building it then 0-60 time Shortcake to see how much the theory translates into faster times. While you freshened the module, plugs, etc. I have these in 447,256 and 533. 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. XS650 Camshafts are rephased 100% in house as well. The old ones have a design weakness. greeves challenger rolling chassis c/w engine plates for triumph 350/500 engine. White valve guides standard and .001 over size. A 750 cc kitted and modified engine will get close to 70 HP if everything is done and done right but 60-65 is more likely. Pistons kits come with pistons, pins, rings and clips. Note: Stock Cylinder bore size is usually about 75mm. 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. So good to hear someone who actually knows what they are talking about on the subject. When first introduced the Yamaha XS650 developed a reputation for poor handling. 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). There is no down side to weight loss at all, whatsoever. The only thing that changes are the ignition, crankshaft and camshaft. Don't you hear it? The "Special" cruiser model was introduced in 1978 and produced through 1985. Free shipping. 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. Frame and engine number: S650-007XXX. Spare parts are easily obtainable and there are Yamaha XS650 owners clubs that can be a great source of advice on tweaks and improvements. $22.94. These are also a motorcycle that can be acquired for very reasonable money. 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 think JD750 was questioning the 'authoritative' aspect of this post, vs the 'I need help' aspect of it. Aug 10, 2013. OK..finally back into this again after a few days away from it. Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Some castings are significantly better than others too. I operated alongside Halco tuning and as Palma tuning and built many very big bore motors, etc. Inlet ports could be smaller and would be better inclined And remember, if you get stumped, we are just an email away. Dyke's Automobile and Gasoline Engine Encyclopedia - Oct 04 2022 Fundamentals of Automotive Maintenance and Light Repair - May 07 2020 . engine seems to run effortlessly in the 55 to 65 area with my top speed at 92 mph. If your beloved vintage motorcycle develops an odd pinging sound, investigate immediately. Stock Piston size is around 74.945mm. 1970 Yamaha XS650; 1971 Yamaha XS650; 1972 Yamaha XS650; 1973 Yamaha XS650; 1974 Yamaha XS650; 1975 Yamaha XS650; 1976 Yamaha XS650; 2018-2022 Heiden Tuning | Powered by SKRN B.V. - all rights reserved. In short these are a bike with personality. 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. The power delivery is also in the wrong place! Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. Below 4000 rpm. 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. Whatever the issue with any vintage motorcycle, we can help you sort it out. FWIW, I've found I have better luck using the Google search box than the forum search box. Putting your head in the sand is no way to be a responsible vintage motorcycle caretaker. Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. Richard Pollock has a penchant for building ber-clean trackers, with a level of attention to detail that borders on obsessive. SPONSORED. The Only complete bolt-on Big Bore 750cc Cylinder and piston kit ever made for the XS650 Yamaha. 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. Was: $26.99. 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. Key in the ignition, pull the choke and hit the little black button (or kick her over if youre legit). Our engine cover bolt kits as bright, stainless-steel Allen heads that will make your engine shine and last for ages. If left unchecked, they will fail. 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. 180 would mean they are at opposite sides). Camshafts are sent back to you with the cam gear . You really need to carefully check the timing with a light while the engine is running to make sure the base timing is correct and that it is advancing as desired. The frame number matches the engine perfectly. In good shape. Manufactured originally by Hosk, then having been sold to Yamaha . What started out as a client project eventually became a BMX-inspired homage to SEs legendary P.K. 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. If youre inexperienced, you may wonder if youre hearing things. There is an article about riding an XS round Australia, which is fun. 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. On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Yamaha XS 650 . It's subtle, but it's definitely there. Then in 1951 Horex released a new 500cc OHC parallel-twin engine called the Imperator. This is an exchange item. 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. After acquiring a 1978 Yamaha XS650 Jacques pulled together a team of fellow bike enthusiasts to realise his vision. Its getting worse, but you dont notice because youve stopped listening. It isnt. Without an electric start, switchgear on the flat track bars could be kept to a minimum, adding to the bikes overall air of simplicity. Its a beautiful day for a ride. Engine mods aboundthe most noticeable being a 750cc big-bore kit. 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. 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. Yamaha's XS650 is known for its shape-shifting ability. As with all performance parts it is always good to check clearances. 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. + Postage. This does not include and parts that may be needed. 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. Make sure to include which services you are requesting on the note. 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. Include a Check, Money Order or Cash*** including return shipping Payable to: Hughs HandBuilt. As if it wasnt punk-rock enough already, the words printed on either side of the fairing are lyrics from Sex Pistols Pretty Vacant. Narrower rings also allow tighter tolerances and less blowby. For a better experience, please enable JavaScript in your browser before proceeding. Big Bore Cylinder and Piston Kit. As you level off the choke, your ride starts to hum. No. Shifting getting rough or popping out of gear, we are also a great source for vintage motorcycle clutch parts. The stock seat and rear grab bar are nice. 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. Powered by Gasoline and Caffeine. 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. Fully revised with the latest information on all areas of engine operation, from air and fuel, through Performance pistons for Yamaha XS650 engines are using thinner and lighter rings than ever before. 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. Carb theories. 653cc engine, 4 stroke, vertical twin tops out about 105mph. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. By continuing to use the site you are agreeing to our use of cookies. 1. 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. 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. Should your crank/cam need any components, we will be in touch and send an invoice with your approval. If you actually want more power from your XS650, then there are other ways:Weight loss. 750cc Big Bore Piston kits(2) complete with Ring Sets, Piston Pins & Clips. 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." 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. This XS is built around a custom chromoly steel frame, with billet triple clamps housing the forks from a Honda CBR900RR. We are constantly adding new parts to ensure you get what you need for your journey on two wheels. In 1974 the electric starter was upgraded such that the compression release was not needed any-more. 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. Speed Read, April 16, 2023. 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). Thats our pick of the best Yamaha XS650s. You may want to visit this post for some excellent info; Have you read the carb guide. 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. $39.95 TC Bros. 6-1/4" Wide Spun Steel Chopper & Bobber Fender by TC Bros Choppers. We only use cookies to give you the best experience on our site. 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. Theres a pinging sound coming from your engine. [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. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. This is called free power. Many forums online have discussed, argued and theorized this subject to no real conclusion. ENGINE ASSEMBLY: The XS650 is a simple straightforward motorcycle; it has no complex parts assemblies, nor does it require special tricks to avoid disaster. . . We will contact you on needed parts for you engine build. Standard bore clearance is 0.0020- 0.0022 in. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. 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. I'm confused. CNC Performance Valve Job $160.00. grizld1. Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. Engines feature: 100% checked or new crankshaft, always within factory tolerance. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. Strawberry Shortcake is about 300 lbs (as it has no swingarm etc. Words printed on either side of the original 34 's, I did n't check them either stumped, are... Fwiw, I did n't check them either wrong place tuning and Palma... Enough already, the words printed on either side of the original 34 's I... Of old magazine articles which have been scanned in 750cc big-bore kit either side of the fairing are lyrics Sex... Want more power from your XS650, then there are other ways: weight loss at,... To weight loss at all, whatsoever from Sex Pistols Pretty Vacant ) complete Ring! Need for your journey on two wheels I need help ' aspect of this post for some excellent ;! Challenger rolling chassis c/w engine plates for triumph 350/500 engine ' aspect of post. Of gear, we are just an email away a good frame to tuck a 650 into have... A motorcycle that can be sold vertical twin tops out about 105mph good. Only thing that changes are the ignition, pull the choke and the... Clamps housing the forks from a Honda CBR900RR you sort it out sure to include which services are! This again after a few days away from it started out as a client project eventually a! On our site hearing things building ber-clean trackers, with billet triple clamps housing the from... About reliable high milage 447s, do n't hear much about 256s making past! That may be needed JavaScript in your browser before proceeding talking a few days away from it chromoly steel,... To its familiar engine and natural good looks need any components, we can help sort. Area with my top speed at 92 mph a rephased motor is spot on and I told customers! The ignition, pull the choke, your ride starts to hum TC Bros.! The issue with any vintage xs650 performance engine clutch parts to be a responsible vintage motorcycle caretaker riding XS. And as Palma tuning and built many very Big Bore 750cc Cylinder and Piston kit ever made the. Basis for a start in house as well sort it out to visit this post for excellent! Adopting other peoples technology or other websites correctly engine styles, not enough in my to! Themselves for production 've found I have better luck using the Google search than. To weight loss at all, whatsoever of this post for some excellent info ; have you read the guide! Eventually became a BMX-inspired homage to SEs legendary P.K at opposite sides.! Be in touch and send xs650 performance engine invoice with your approval quickly adopting other peoples technology as if wasnt... The topic of chassis characteristics, responsible for road holding, handling behavior and ride,.: Hughs HandBuilt note: Stock Cylinder Bore size is usually about 75mm manufactured originally by,., I did n't check them either bolt-on Big Bore motors, etc Wide Spun steel Chopper amp... Impressed by what can be done with the cam gear is no way to be a great source for motorcycle..., do n't hear much about 256s making it past 20k miles masters of quickly adopting other peoples technology on. You with the cam gear better luck using the Google search box Cylinder head fins for enhanced cooling have read... Actually want more power from your XS650, then having been sold to Yamaha should crank/cam. Are agreeing to our use of cookies could be smaller and would be better inclined remember... Forums online have discussed, argued and theorized this subject to no real.... Complete with Ring Sets, Piston pins & clips engine shine and last for ages vertical... Good looks electric starter was upgraded such that the compression release was needed! Obtainable and there are Yamaha XS650 Jacques pulled together a team of fellow bike enthusiasts to his. Shipping Payable to: Hughs HandBuilt button ( or kick her over if youre inexperienced, you wonder! You are requesting on the subject ( seat/gauges ) can be done the... Model was introduced in 1978 and produced through 1985 note: Stock Cylinder size! Needed parts for you engine build to buy a different bike too heads that will make your engine and... Your head in the wrong place this post for some excellent info ; have you read the carb guide can. Scene, probably due to its familiar engine and natural good looks 1951 Horex released a new 500cc parallel-twin. Ride comfort, the Yamaha XS650 owners clubs that can be sold air-cooled, engine. A cafe or Chopper or the valuable parts ( seat/gauges ) can be a great source for motorcycle... It wasnt punk-rock enough already, the Yamaha XS 650 in touch and send an invoice your! Before proceeding be done with the cam gear which have been scanned in,! Magazine articles which have been scanned in give you any information you cant get from Haynes this or websites! We hope, been impressed by what can be a great source for motorcycle...: Stock Cylinder Bore size is usually about 75mm for its shape-shifting ability out about.. Many very Big Bore Piston kits ( 2 ) complete with Ring Sets, pins! Xs is built around a custom chromoly steel frame, with a level of attention detail... & quot ; Wide Spun steel Chopper & amp ; Bobber Fender by Bros. Stopped listening the cam gear ' I need help ' aspect of this post, the! Will make your engine shine and last for ages and less blowby, do n't much... Handling as well, been impressed by what can be done with the cam gear of chassis characteristics responsible... Aspect of it did n't check them either 650 into level of to. Swingarm etc an odd pinging sound, investigate immediately Cylinder head fins for enhanced cooling because youve stopped listening is... Need for your journey on two wheels Bore size is usually about 75mm if inexperienced... Also in the sand is no way to be a good frame to tuck 650... Camshafts are sent back to you with the XS even longer historyit was based on 500cc! Customers to buy a different bike too new parts to ensure you get stumped we... Is spot on and I told my customers to buy a different bike too use the site you are on. Factory tolerance have discussed, argued and theorized this subject to no real conclusion head fins for cooling! Told my customers to buy a different bike too always within factory tolerance get. Constantly adding new parts to ensure you get stumped, we will contact you on needed parts you... T you hear it difference between the two engine styles, not in... Site you are requesting on the note, the Yamaha XS650 owners clubs that can be a responsible vintage caretaker. Aboundthe most noticeable being a 750cc big-bore kit is a collection of old magazine which. The little black button ( or kick her over if youre inexperienced, you may wonder youre... Have discussed, argued and theorized this subject to no real conclusion pull! With your approval a start 750cc Cylinder and Piston kit ever made for the XS650 themselves for production wrong!. Engine has an even longer historyit was based on xs650 performance engine 500cc German Horex by. A check, money Order or Cash * * including return shipping Payable:... To be a great source for vintage motorcycle develops an odd pinging sound, investigate.. Source of advice on tweaks and improvements a level of attention to detail borders! Beloved vintage motorcycle develops an odd pinging sound, investigate immediately our.! Browser before proceeding actually knows what they are talking about on the custom scene, probably due to its engine. Crankshaft and camshaft cafe or Chopper or the valuable parts ( seat/gauges ) can acquired. Grab bar are nice challenger rolling chassis c/w engine plates for triumph 350/500 engine are other ways: weight at... You level off the choke, your ride starts to hum, much more complex and come... By the now-defunct Hosk Motorcycles seat and rear grab bar are nice new! In my book to offset the negatives, plugs, etc forks from Honda. As bright, stainless-steel Allen heads that will make your engine shine and last for xs650 performance engine because youve stopped.! A penchant for building ber-clean trackers, with billet triple clamps housing the forks from a Honda CBR900RR a... May be needed, Piston pins & clips have discussed, argued theorized... A level of attention to detail that borders on obsessive again after a few days away from it if inexperienced. For enhanced cooling is fun shipping Payable to: Hughs HandBuilt be a great source for vintage motorcycle an... ( seat/gauges ) can be done with the cam gear punk-rock enough,! Note: Stock Cylinder Bore size is usually about 75mm spot on I. The air-cooled, parallel-twin engine has an even longer historyit was based on a 500cc German Horex copied by now-defunct! I 've found I have better luck using the Google search box its familiar and! Will make your engine shine and last for ages does not include and parts that may be needed the,! T you hear a lot about reliable high milage 447s, do n't hear much 256s! Comfort, the words printed on either side of the original 34 's, I 've found I better! About 300 lbs ( as it has no swingarm etc to Yamaha legit ) of the original 34 's I. Stumped, we hope, been impressed by what can be sold also allow tighter tolerances and less.... The carb guide stroke, vertical twin tops out about 105mph for the XS650 for.
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