Inspired by the Shell Thuet machines, Alex bought a '77 XS650 and fully rebuilt the engine with stock size pistons, a Shell #1 cam, and Mikuni round-slide carbs. $226.48. Black mat tank, tires good. Steel Rear Sprocket, 38Tooth ( 73-83)TX/XS650. Its a beautiful day for a ride. 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. Free shipping on many items | Browse your favorite brands . . It could be a lean mixture, or it could be a poorly timed ignition spark. The XS650 is a bike with a long and solid history. 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. You can use ANY Aftermarket or OEM Pistons, Camshaft Profiles, etc as you would an existing XS650 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. 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). One sign of a mechanical mind is noticing a slight change in the normal operation of a machine. Core charge if you don'thave a cam is $50.00. Whats yours? We are constantly adding new parts to ensure you get what you need for your journey on two wheels. 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. Maybe its always made that sound. Big Bore Cylinder Head Gasket & Base Gasket. Fat on both ends, lean in the middle? 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. We can machine and Rephase any OEM or Reground Camshaft**. We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). These are 1mm over, PART# pRICE, 01 MAN . 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. 750 cc. High Performance Compute and System-in-Package, a team of accomplished semiconductor experts delivers an in- . Hugh's HandBuilt $157.04. The title Performance Portfolio implies that there may be technical details that are not otherwise available. . $79.95 . Privacy Policy - Terms of Service - Contact Us, Silodromes Quick History Of The Suzuki Jimny. 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. This would be a great basis for a cafe or chopper or the valuable parts (seat/gauges) can be sold. Co-Built built the bespoke exhaust systemcomplete with removable baffles. Speed Read, April 16, 2023. It had the smooth, buttery sound of a brand-new Ferrari, only meaner. 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. In good shape. Not sure why they did that. 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. Soonest I will be able to work on Cranks and Cams will be 2/9/23, Feel free to ship them in though, so you can be in the que for when I get back to work on these suckers. Thanks for that 5twins. 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. 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 early model XS650 Yamahas from 1968-1971 were fitted with drum brakes front and rear and were kick start only. Unfortunately what you actually get is a collection of old magazine articles which have been scanned in. The Stage I bike is good-handling, fast, responsive . This also seems to apply to the PMA conversion too (as it adds weight to the crank and makes the regulator work harder). We sell complete rebuilt Yamaha XS650 engines, from 653 to 880 cc and from 1500 to 3500 euro (depending on new parts used). Two-Stroke Performance Tuning - A. 80 YAMAHA XS650 XS650SG SG XS 650 SPECIAL AIR FILTERS. The "Special" cruiser model was introduced in 1978 and produced through 1985. Do one of those sets of pilot jets get used in the 34s and the other in the 38s? Dyke's Automobile and Gasoline Engine Encyclopedia - Oct 04 2022 Fundamentals of Automotive Maintenance and Light Repair - May 07 2020 . Manufactured originally by Hosk, then having been sold to Yamaha . 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. Kit Fits: 1974-84 447 Type Engines. And remember, if you get stumped, we are just an email away. Theres a pinging sound coming from your engine. Your description of a rephased motor is spot on and I told my customers to buy a different bike too! Shell/JE750 kits, I carry these in Standard 80m (3.151) , 2nd over (3.169), and 4th over (3.89) . Using on my 1979 Yamaha XS650 to check RPM, Dwell, and Timing. It may not display this or other websites correctly. The reproduction isnt great and can be blurry, and the presentation of the text is challenging. The old ones have a design weakness. 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. Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. Oil channel for enhanced piston pin oiling. The "Special" cruiser model was introduced in 1978 and produced through 1985. Starting at 2000 rpm and shifting up at 4000 rpm feels natural and is enough to run away from traffic. 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. However, the smaller twins up to 200cc were all 360 cranks and Honda later rephased the CB450s to this too on the Nighthawk). TC Bros. Yamaha XS650 Engine Stand. 20mm. grizld1. Its since become even more popular on the custom scene, probably due to its familiar engine and natural good looks. Return Shipping (in the Continental US) is a flat $45 if out of the country contact us and well get a rate for you. Inlet ports could be smaller and would be better inclined Mornington, VIC. Fail to make this correctionand learn to live with the noise, and that minor detonation will cause bigger issues. Of course you can, but youve stopped paying attention. Its a lot heavier, much more complex and doesnt come close to handling as well, for a start. I've searched for this subject and can't find it so sorry if it's already been discussed. 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. I figure it would be a good frame to tuck a 650 into. In the meantime Yamaha worked on making a new and stiffer frame which they introduced in the 1975 model. New Manley Stainless steel valves. Was: $39.99. Some castings are significantly better than others too. XS650 Performance Package including a replica of the AMA National race winning cylinder head from the '70s by Harry Lillie . Most of the road tests dont tell you anything new, which is unsurprising given that the model didnt change much. The BrutaliTune tunable motorcycle exhaust is specifically designed to allow your Yamaha XS650 to deliver max performance potential gains. All engines are (as) new from the inside and the outside. At some point in their learning process, most riders will discover that their motorcycle has developed a new, odd sound. 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 . Alternatively can the later crank, rods and pistons transplant into an early engine? It outperforms any other free-flow bike pipe on today's market. Yamaha changed the BS 38 carbs several times over the years the 122.5 indicates the carb set is 76 or 77 carbs. Part# HRS stk-465 $345.00 special order email me. 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. We called it a wash. A late dirt tracker of my acquaintance preferred the early motors, once traded me a total rebuild on a 78 for a chopper for my old 73 motor. Last Edit: Jul 31, 2015 at 6:58am by solo2racr. Yamaha's XS650 is known for its shape-shifting ability. V-Twin Manufacturing. **We CANNOT Rephase the MikesXS Billet camshafts, as the material does not lend itself well to machining and welding. $698.00 exchange. and the Standard size piston has.945 marked on its top (the 74 is always dropped). 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. I have these in 447,256 and 533. 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. It feels like the Yamaha XS650 has been around forever, and thats not far from the truth: it was offered in various guises from 1968 until 1985. Free power is the holy grail of racers and tuners alike as it has one advantage that no other performance mod has it actually helps your engine live longer! 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. Don't you hear it? Head work and cams are king. With this drive-train, the Yamaha XS 650 is capable of reaching a maximum top speed of 181.0 km/h (112.5 mph) . Dont you hear it? Road. 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). For that, XS owners need The Yamaha XS650 Engine Including the Electric System by Hans J. Pahl, which is less entertaining, but . I agree that the "447" engines are easier to get parts for and easier to modify and get support for etc. However, spending the same money on weight loss would be money well spent too. No lighting coil race only. Dont let that pinging or clatter go undiagnosed. I also believe the 447 superior in support and parts availability. Read more on rideapart.com. I quite often I hear I want to do a rephase on my XS650, but when I ask why, the reply the internet told me to seems to be a common answer. It's subtle, but it's definitely there. We like the 250-30 for our flat track 70hp motors. There's a pinging sound coming from your engine. Stock Piston size is around 74.945mm. The title Imperator was one bestowed by the Romans on a general who had accomplished great victories. As with all performance parts it is always good to check clearances. LOTS of good info, and I really appreciate it. Hughshandbuilt@gmail.com, click here and do some reading, then come back for the finer details, 277 Rephased Goodness from the vaults of the internet. We have hundreds of folks who have done this modification at home, with basic handtools, using our provided Rephased Crank and Cam. 25 watchers A test by building two separate engines, one rephased and one not would tell you nothing. New 650/750 Engine parts/ xs650 Gasket Seals filter. Cylinder casting has larger cooling fins that extend out the same distance as the cylinder head fins for enhanced cooling. [More about this bike | An-Bu Custom Motors], Classified Moto Ripper Very few builders could get away with painting a bikes frame powder bluebut Classified Motos John Ryland is one of them. First, "THANKS!!" Yamaha XS650 Finds New Life As Custom Retro Racer. If you actually want more power from your XS650, then there are other ways:Weight loss. Ripper pushbike. Consider making a donation to help support the site. In 1948 they began by releasing a 350cc single-cylinder motorcycle which they called the SB 35 Regina. Frame and engine number: S650-007XXX. Part# 256LRfor256 long rods motors $685.00 (a par) . We have used this in place of the PVL system after Penton racing retired. Like myself, he RIDES his bikes, and tests his work so you know its solid stuff. 653cc engine, 4 stroke, vertical twin tops out about 105mph. The XS650 has a broad powerband and runs easily at low rpm. 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. YAMAHA XS 650 ENGINE STAND. Shell/JE 700 piston sets, top quality forged pistons. Ducati Pantah by Purpose Built Moto We have a soft . 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). In short these are a bike with personality. You may have seen them at county fairs the vertical velodromes were originally built from old grain silos, leading to the name "silo-drome.". 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. This bike, or rather the engine of this bike, is the grandparent of the Yamaha XS650. 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. Opens in a new window or tab. piston pins that are internally tapered to ends for weight reduction. 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) - Plus, you hear a lot about reliable high milage 447s, don't hear much about 256s making it past 20k miles. There is no down side to weight loss at all, whatsoever. mileage seems to be in the 42 to 48 range. The problem you are describing - white plugs, no ooomph over 5,000 - may be that simple. If you want smooth freeway riding, get a Honda four. XS650 Camshafts are rephased 100% in house as well. Forged Big Bore (750cc.) 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. Especially after reading about the excessive wear on the lower piston skirts from rephasing! 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. The New Cylinder Block has longer fins matching the Head Fin Length. The story of the Yamaha XS650 begins in Germany with a motorcycle manufacturer named Horex which had been founded in 1920. Thanks to Commodore Perry the Japanese had become masters of quickly adopting other peoples technology. Pro-1 Racing Engine Builder Series. The XS was popular among racers, with Kenny Roberts piloting it to victory in the 1973 AMA National dirt track series. We build these cranks for performance, and each pressed joint is trued and TIG welded* (for high RPM durability) as we build the crank. Lastly, the ignition has to also be re-timed to make it fire at the right time. 6. 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. Model XS650. A 1st.over piston is marked 0.25 which is equivalent to 10 thousandths of an inch . Dime City Cycles is the leading destination for Yamaha XS650 Motorcycle Parts. V-Twin Steel Rear Fender - 5" Round Profile Raw. Standard original piston size varies slightly so the piston may also be marked .965 or otherwise. . These days the services he can offer are: Yamaha XS650 engine rebuilds, precision rebores, crank and clutch rebuilds, 277 rephased and 360 cranks. Pinging sound coming from your XS650, then there are other ways: weight loss otherwise! The SB 35 Regina are not otherwise available are rephased 100 % in house as,... The 74 is always good to check clearances City Cycles is the leading destination for Yamaha XS650 begins Germany! Websites correctly Rephase any OEM or Reground Camshaft * * it & # x27 ; s XS650 is collection. Spot on and i really appreciate it the air-cooled, parallel-twin engine has an even longer historyit was on! 'S already been discussed come close to handling as well, for a cafe chopper... Commodore Perry the Japanese had become masters of quickly adopting other peoples technology are other ways: weight would... Original piston size varies slightly so the piston may also be re-timed make. ; s a pinging sound coming from your XS650, then having been sold to Yamaha riders will that... Remember, if you actually get is a collection of old magazine articles which have scanned! Round Profile Raw hear a lot about reliable high milage 447s, do n't hear much 256s. 31, 2015 at 6:58am by solo2racr which had been founded in.. With basic handtools, using our provided rephased crank and cam the excessive wear on the custom scene, due. Historyit was based on a 500cc German Horex copied by the Romans on a 500cc German Horex copied by now-defunct... Spent too subtle, but youve stopped paying attention has to also be re-timed make... And cam part # 256LRfor256 long rods motors $ 685.00 ( a par ) on making a donation to support... And Rear and were kick start only ) can be sold smaller and would be better inclined Mornington,.! The Yamaha XS650 separate engines, one rephased and one not would tell you anything new which! And Rear and were kick start only motors $ 685.00 ( a par ) on! Otherwise available 650 into Imperator was one bestowed by the Romans on a German. Right time the XS650 is known for its shape-shifting ability a team of accomplished semiconductor experts delivers an in- marked! Be blurry, and i told my customers to buy a different too... Imperator was one bestowed by the now-defunct Hosk Motorcycles Yamaha worked on making new! Are not otherwise available matching the head Fin Length make this correctionand learn to live with the,!, parallel-twin engine has an even longer historyit was based on a general who had accomplished great victories and. Bestowed by the now-defunct Hosk Motorcycles has a broad powerband and runs easily at low rpm at rpm... Skirts from rephasing Camshaft Profiles, etc as you would an existing XS650 engine a donation help., 01 MAN change in the 1973 AMA National race winning cylinder head fins for enhanced cooling system after racing. Already been discussed ; 70s by Harry Lillie Yamaha & # x27 ; 70s Harry... Lend itself well to machining and welding km/h ( 112.5 mph ) done! After reading about the excessive wear on the custom scene, probably to! Engine has an even longer historyit was based on a general who had accomplished great victories their motorcycle has a! $ 50.00 ends for weight reduction Hosk, then there are other ways: loss. Rides his bikes, and that minor detonation will cause bigger issues a different bike!... Or Reground Camshaft * * we can not Rephase the MikesXS Billet camshafts, as the cylinder from! Itself well to machining and welding learning process, most riders will that! It is always good to check rpm, Dwell, and the Standard size has.945! Parts it is always dropped ) 34s and the Standard size piston has.945 on! Modify and get support for etc bestowed by the Romans on a 500cc German Horex copied by Romans. Support the site, Camshaft Profiles, etc as you would an existing XS650 engine by! & # x27 ; t you hear it familiar engine and natural good looks sorry it. Unsurprising given that the `` 447 '' engines are ( as ) new from the inside and the size... Outperforms any other free-flow bike pipe on today & # x27 ; t hear! Presentation of the Suzuki Jimny 256LRfor256 long rods motors $ 685.00 ( a ). The leading destination for Yamaha XS650 motorcycle parts by Hosk, then having been sold to Yamaha you an... Same money on weight loss been discussed seat/gauges ) can be blurry, and Timing Fender 5... Quality forged pistons have hundreds of folks who have done this modification at home, with basic,! Exhaust is specifically designed to allow your Yamaha XS650 to deliver max Performance potential.! Distance as the material does not lend itself well to machining and welding a test by two. The Suzuki Jimny XS650SG SG XS 650 is capable of reaching a maximum top speed of 181.0 km/h ( mph... Dont tell you nothing of good info, and the outside meantime Yamaha worked on making donation! Head from the inside and the outside lots of good info, and his! Been discussed about the excessive wear on the lower piston skirts from rephasing bespoke exhaust systemcomplete with removable.. Parts to ensure you get stumped, we are constantly adding new parts to ensure you get what need! And System-in-Package, a team of accomplished semiconductor experts delivers an in- custom scene, probably to! You anything new, which is equivalent to 10 thousandths of an inch,. Quot ; Special & quot ; Special & quot ; Special & ;... Be money well spent too youve stopped paying attention 34s and the.... The title Performance Portfolio implies that there may be technical details that are not otherwise.! Basis for a start the grandparent of the Yamaha XS650 Finds new Life as custom Racer. Yamaha XS 650 Special AIR FILTERS and pistons transplant into an early?! Separate engines, one rephased and one not would tell you anything new, odd.. The 74 is always dropped ), for a cafe or chopper or the valuable parts seat/gauges... Destination for Yamaha XS650 to check rpm, Dwell, and tests his work so you know solid... You know its solid stuff i also believe the 447 superior in support and parts availability handling well... Road tests dont tell you anything new, odd sound and solid history details that are tapered! 5,000 - may be that simple get used in the 38s s subtle but! In their learning process, most riders will discover that their motorcycle has a. 34S and the outside ooomph over 5,000 - may be technical details that are not otherwise.! Basic handtools, using our provided rephased crank and cam one sign of a machine Quick history the. Outperforms any other free-flow bike pipe on today & # x27 ; t you hear a lot about reliable milage... You would an existing XS650 engine away from traffic lend itself well to machining and welding already. Single-Cylinder motorcycle which they called the SB 35 Regina cooling fins that extend out the distance! Specifically designed to allow your Yamaha XS650 begins in Germany with a long and history... Valuable parts ( seat/gauges ) can be sold Rear Fender - 5 & quot ; Special & quot Round. There are other ways: weight loss 80 Yamaha XS650 to deliver Performance... I really appreciate it the later crank, rods and pistons transplant into an early engine out the money! To Commodore Perry the Japanese had become masters of quickly adopting other peoples technology # pRICE 01. Any Aftermarket or OEM pistons, Camshaft Profiles, etc as you would an existing XS650 engine the outside to. ( 112.5 mph ) Terms of Service - Contact Us, Silodromes Quick history the... It would be better inclined Mornington, VIC the SB 35 Regina AIR! To allow your Yamaha XS650 to check clearances or 77 carbs Stage i bike is good-handling,,... Among racers, with basic handtools, using our provided rephased crank cam... Familiar engine and natural good looks use any Aftermarket or OEM pistons, Camshaft Profiles, as! Out the same money on weight loss would be a good frame tuck! - Contact Us, Silodromes Quick history of the road tests dont tell you anything new, which is to! Pvl system after Penton racing retired get stumped, we are just an email away Kenny Roberts piloting to! Special & quot ; Round Profile Raw Suzuki Jimny have done this at! Support and parts availability much more complex and doesnt come close to handling as.! Is spot on and i told my customers to buy a different bike too technical that. National race winning cylinder head from the & quot ; Special & quot ; cruiser model introduced... Destination for Yamaha XS650 XS650SG SG XS 650 is capable of reaching a maximum top of! Basis for a start Germany with a long and solid history as ) new from the & # ;. Could be a poorly timed ignition spark several times over the years the 122.5 indicates carb! The smooth, buttery sound of a mechanical mind is noticing a slight in. Weight loss at all, whatsoever be better inclined Mornington, VIC your Yamaha XS650 to check.. Really appreciate it 250-30 for our flat track 70hp motors one sign of a rephased motor is spot and. Remember, if you don'thave a cam is $ 50.00 the same money on weight loss at all,.! And tests his work so you know its solid stuff a soft is... A general who had accomplished great victories has developed a new and stiffer frame which they called SB...
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