Huge shoutout to the guys at Limey Bikes in Austin for helping me make this video. Check them out here: chris-kelland.squarespace.com/. Don't forget to check out the patreon and support the channel: www.patreon.com/spitescorner
It isn't an explosion that happens in the cylinder, rather deflagration. A detonation would blow your motor apart. This channel has way too many subs to not get that right. Additionally, you should run synthetic two stroke oil in these and all two stroke motors in 2024. Better longevity, more power, virtually no smoke and virtually eliminates any risk of seizure.
It wasn’t the Honda CB750 that caused Harley Davidson to fill their diaper and go crying to the US government in 1983. It was the Honda VF750F, as well as the Magna and Sabre. The Honda CB750 was released 14 years before in 1969. If you’re going to make videos about motorcycles, it’s best to do some basic research first.
It wasn’t the Honda CB750 that caused Harley Davidson to fill their diaper and go crying to the US government in 1983. It was the Honda VF750F, as well as the Magna and Sabre. The Honda CB750 was released 14 years before in 1969. If you’re going to make videos about motorcycles, it’s best to do some basic research first.
I really miss 2 strokes. My second ever bike was an '83 RG250 & Suzuki had come a long way in building 2 stroke bikes by then. The power band was intoxicating & I was practically uncatchable on tight twisty roads. It was awesome, until the oil pump let go & the motor seized. I feel sorry for new riders who can no longer experience the feeling of riding a 2 stroke crotch rocket.
My friend had a tuned Kawasaki KR1 S in the late 80's. That was pretty much a direct competitor to the later RGV 250. To this day, I still remember it as one of the fastest bikes that I've ever ridden. Yes, obviously I've ridden bikes with far more power and with higher claimed top speeds, but that "little" 250 weighed absolutely nothing, had brilliant brakes and suspension and when the tacho hit 7k it was like being shot out of a cannon. You couldn't change gears fast enough. I'm with you. I feel sorry for riders that will never get to experience that feeling.
I'm planning to build a custom 2 stroke cafe racer or scrambler with a Rotax 503 aero engine. No emissions testing in my state on bikes. I have a Rotax 583 in my experimental aircraft (basically a glorified kite) and it is a rocket ship. Can hit over 1400fpm climb rate in ideal conditions .
The Suzuki 2 strokes of this era were more about usable torque curves instead of screaming narrow power bands that are otherwise useless as a road touring bike engine.
Had one of these in the late 80's. Modified it a bit: Cast aluminum wheels, fibre glass fenders and seat, Dunstall fairing, tank and seat, 3 into3 exhaust, ditched the starter motor to lighten it. No mirrors, no indicators. Braided brake hoses. Drilled rotors, better pads. A European bike mag had a complete engine tuning manual for this engine. I did the whole thing. Once done I dyno'ed the beast. 115 horses at the wheel. I've owned a lot of bikes. This is the one I regret most having sold.
I used to prepare GT750 engines for a sidecar racing team. You could get about 105 reliable horses out of those engines, but you needed to modify the clutch basket to prevent it from disintegrating on the higher revs. Even modified a cylinder block to accept membranes. so I could add another scavenging port above the intake port. The membranes used were the same as the ones I used for my TZ750. Lots of peak power and still a wide powerband. The GT750 shown here would run so much better if the oil pump was adjusted to spec, especially with the modern clean burning mixing oils.
Actually consumers voted with their $ for "civilized" four strokes! H1 and h2 kaw triples were ungodly! I still have a suz t500 titan and RD200...I wish Istill had my my yam IT200! I still enjoy my yam ty250 trials bike... Sold my Rz...cause I looked strange on it...6'9 290 will do that!
I had a GT750 in the early 80's. I used it for touring as well as a daily rider. The biggest trip I did was over 6000km's from the bottom of Australia to the top via the east coast, that bike didn't miss a beat. Wish I still had it 😢😊
I had one for a couple of years, on the freeway about 50-70mph it was so smooth, like an electric motor. Not quick by any means but OK, nice manors, put lots of miles on it (120/day) going to work and back. Solid and brutally reliable. Loved this machine, it still holds a special place in my heart.
What they didn’t mention was you often got 20 mpg out of them at cruising speeds which is another reason the big two strokes died out . The Kawasaki H2’s reputation is possibly down to the then tyre technology Dunlop tt100’s and Avon speed masters were about as good as it got but weren’t made for 70hp bikes that made all their power in 1500 revs. I learned to ride on small two strokes they were much more fun than the equivalent four strokes and would rather have a RD or a GT over a CB or a XS .
H2's reputation was for piss poor handling due to a combination of a frame that flexed badly, a short wheelbase making it wheel stand quickly, and react quickly, flexible forks and a razor sharp powerband, tires were the same for everyone, other bikes handled well.... Yes i rode them all... Still do...
Actually the Water Buffalo could get about 40 mpg if you didn't wick it up all the time. It was a long stroke engine that owed a lot of it's internal porting and undersquare bore/stroke design to the SAAB 750 and 850 automotive 2 strokes and was a comfortable and relaxed touring bike at 60 mph
Back when I was a kid here in Europe in the 90s and 2000s it was still common seeing two stroke bikes,usually little 50s, 125s and 250s ridden by teens. I bought a two stroke bike from my childhood,a 1994 Aprilia Red Rose Classic,as my first bike back in 2015,thinking I'll replace it with something bigger in a few years,but 9 years later I still have it. It's a little cruiser for beginner riders,but it's actually quite fun and comfy to ride,and seeing surprised looks when people see a cruiser buzzing around town is quite funny.
I'm American but I spent my teen years in the UK. My introduction to riding was on a Yamaha TZ-125. Wish I could get one in the states for a reasonable price. I also got to ride vintage BSAs, Triumphs and Nortons on occasion. I had a neighbour with an extensive collection who was willing to sell me a mint '74 850 Interstate for 800UKP in '99. My stupid parents wouldn't let me buy it even though it would have been shipped back to the States for free by my dad's employer. A mint, original UK spec '74 Interstate is worth like $25k in the US today. I was more interested in preserving it than riding it and was willing to agree to some very specific conditions with my parents. But my mom was scared of me riding a bike. Didn't stop me from riding, just stopped me from having my dream bike. It was even my favorite colour - yellow.
Gotta love a 70s stroker! A good illustration of the power of a two stroke is the first year of MotoGP in 2002. That was the year when we had the two strokes and new four strokes racing together. To ensure the four strokes were competitive, their capacity was 990cc against the two stroke's 500cc. Despite this, Alex Barros on a two stroke managed to finish fourth in the championship against the likes of Rossi and Biaggi on the new four strokes. In fact, he was only 11 points from Biaggi in second. Two strokes vs four strokes - what a spectacle!
I was a young guy during the golden era of the two stroke road bikes. I owned many. The ones I didn't own I still rode because the group I hung with had all the big ones and we traded off. There was one guy who had a water buffalo in the group. He rode it every day reliably. My own favorite was my modded 78 yamaha rd 400, (the silver one),. I also had a 74 earlier. Later, I owned an h1 for a very short time. Didn't care for it but wish I had it now as I could've made some money on it. Blow-up? None blew up. Rode thousands of miles doing cross country rides. Other problems, (electrical or flats), occured. Rode a cafe'ed honda 50 two stroke in 83, ( honda mb5), on an 800 mile round trip out in cali back when the speed limit was 55, (just to say I did it),. Mojave desert and the grapevine on a 50. True story. The honda could do 65 with a couple mods. Road it through desert heat at 11,000 rpm mile after mile. It didn't blow up. Sorry. Blows up is click bate.
True! I've had more than 20 two-strokes. From 125 to 750 over the course of 40 years. None blew up. I still own a 300 cc daily rider two stroke. I've put more than 50,000 miles on that one. Rock solid.
@@videotosse It's true. They're no different than my weed trimmers. Those never blew up either. None. Ever. Or chainsaw. Or weed blower. They just wear out. I have a 1970's mcculloch chainsaw - still running and cutting! They can seize under weird operating parameters,..long decent for light sport aircraft due to lubrication starvation and the prop being forced to turn because of the wind with no throttle,...but that's a weird parameter and simply negated by running some power with fuelmix,.... till landing. Two strokes ROCK! Cheers to your 50,000 miles. 👍👍
The idea behind the plastic gear is that if the water pump bearing seizes or breaks,the plastic gear is designed to break so you don’t have a massive engine failure
@@spitescorner Do you understand ANYTHING about these bikes? You got several things wrong in this vid. Am only at 1:33 and found this: It wasn’t the Honda CB750 that caused Harley Davidson to fill their diaper and go crying to the US government in 1983. It was the Honda VF750F, as well as the Magna and Sabre. The Honda CB750 was released 14 years before in 1969. If you’re going to make videos about motorcycles, it’s best to do some basic research first. Let me know when you’ve made ALL the necessary corrections.
When I used to race side car, I ran across a 70s sidecar rig that had a water buffalo engine, it was FAST! The guy who owned it said it was originally a Kawasaki triple, he found the frame with no engine and a tree grew through the middle. It was a short wheelbase platform. I loved it, it was a treat to see it in action.
I bought a 1975 GT750 when I was in college. The bike was completely reliable (45,000 miles with nothing but several sets of tires, a final drive chain and sprockets, and several sets of spark plugs (it did have a tendency to foul plugs until I switched to AMACO gasoline - the only unleaded gas back in the day). No need to change oil (just refill the injector tank periodically). I replaced my Suzuki with a 1978 Honda CX500 - the exact opposite in terms of reliability (3 different sets of cam chain & tensioner part numbers - first 2 sets under warranty, the last set on my own nickle... all in the first 24,000 miles). BTW, cam chain tensioners seem to be a mystery to Honda; I had a 1998 SuperHawk that also had cam chain tensioner problems. In any case, thanks for the trip down memory lane!
Drum roll folks! You only have to wait a little bit longer and Yamaha will be introducing its all new RD 350 two-stroke bike that meets Euro 5 emissions with variable exhaust tuning, fuel injection, water cooling, cat converters 10:1 compression, possibly as much as 110 horsepower. All the two-stroke you could ever want with all the new technology you could ever need.
Good video guys! The one smoking pipe says that the crank seal is leaking - sucking oil from the transmission and blowing it out the pipe... I just rebuilt the crank in my 1972 T350 and sadly the right side smokes like chimney... bummer. You can change the right and left end crank seals without splitting the cases... only the right is bathed in transmission oil, so I am going to swap that one and hope for the best! Thanks for posing!
In the late seventies I used my GT550 for daily commuting, 200 miles weekend visits and a 3000 - 4000 miles camping vacation with my girlfriend in the summers. It was a great bike.
I rode the first Suzuki 750 in my town. It did not have disc brakes. The first ones had a 4 leading shoe front drum similar to a Grimeca. I did get told by a Highway Patrolman "Slow that son of a bitch down!" from his PA system. He didn't stop me at 110 because there really wasn't a speed limit in Montana at that time.
they needn't be dead you can more easily mount a catalyst and fuel injection on this while keeping it water cooled. it will burn the excess smoke and hydrocarbons in the catalyst.
@tauncfester3022 and the catalyst is going to restrict the exhaust, instead of speeding it up, either killing the fuel air intake, or requiring an exhaust valve of some sort. At which point you've completely negated the benefits of two stroke being light weight, and extremely simple, as well as probably a significant drop in horsepower.
@@firefighter1c57 No, you are misinformed. A well designed catalyst will not restrict the exhaust any more than a standard baffled muffler. You see I was actually employed in the scooter industry where 2 strokes come with cats in their exhausts, and they run fine with a catalyst, many yard implement 2 stroke engines come with catalysts and run with good power.
I rode my friend's Suzuki 750 with a three-into-one expansion chamber back in the day. I still feel and remember it. Loved it and the howl was awesome.
The engine was used in many 1980s racing sidecar outfits. Very rarely came in first but always provided good racing with minimal time in the workshop. Few years back attended a Mallory Park Festival of Motorcycling. The Kettles were circulating faster than most of the Manx Nortons.
My dad had a gt750J from 1972, purple and white, such a stunning machine, he sold it in the 80s after racing it for more than 10 years! They are super rare here in Portugal due to the huge success of the cb750, to the point were I only saw one once in my life, but I still dream about being able to give my dad a chance to ride one again...
Got a chance to ride one back when they were new and they handled like your living room sofa. Big difference from my RD 350 of the time. The RD was so easy to start I could start it by 'kicking it" with my right arm as I sat on the bike.
I had one in my teens (I'm 65 now), the crank seals went but I managed to split the crank at work (it took 10 tons in the press to split it). Rebuilt it and rode it for another 3 years before trading it in for a Kawasaki 750 twin four stroke.
4:10 That smoke is a sign of a poorly set up oiling system - or possibly even the use of premix in addition to the factory setup. Back in the day, I knew many blokes with water bottles, and none of them smoked. Come to think of it, my GT250 didn't smoke either - even though everyone today tells me there's no way to stop spraying for mosquitoes with one. I suspect the problem with people who aren't as familiar with the tech, along with limited experience solely with old, worn engines and a lack of good NOS parts and the knowledge to fix them to how they used to be.
Before owning my First CB750 that I got in 79, ( where I have two DOHC CB750's now) which is my main ride, I test drove four separate 750's - You are talking 1976 the latest from what I can remember. The bikes were the Suzuki, Honda, BMW, and Kawasaki ( might have been the 900?). The Suzuki I deferred on ever considering further as it vibrated the most where in the handlebars left your hands vibrating. Compared to the BMW, which was the smoothest ride. These were 2nd hand bikes or maybe not, as the dealer not sure if official, and too long ago to consider, but the Suzuki was simply NG due to its vibration -
I always found those bikes interesting. And yes, they did smoke like a chimney. a guy in my tiny little town of Alvarado had one under his carport forever. I always wanted to stop and ask him if he wanted to sell it. It was really well kept. I drove by one day and it was gone!
I grew up in a Suzuki shop in the 70 s and replaced lots of those cranks because the 1st had a bad seal design and failed. I remember that bike well! Long live the WATER BUFFALO!
The 90s 150 and 250 class 2 stroke sportbike is definitely peak for me, most powerful 150 2 stroke made 41.1hp while todays 150 4 stroke only makes 18.9(some got to 24hp with mods)
Okay, so a few corrections I would like to add here: - I don't agree with your statement in which you refer to the GT750 being basically a T500 with an 'Extra cylinder crudely taped on to the side'. - The plastic gear your mate refers to, actually runs the water pump from the crank. The oil pump runs off a vertical shaft at the back of the gearbox. Furthermore, these are available as an aftermarket part for not a lot of money. If it does even fail. - The oil delivery system isn't complicated and neither is the pump, it is pretty straightforward. - Regarding performance, the clue is in the name GT.... Grand Tourer.... it's meant to be a comfortable mile eater, you can still do that now on one of these. Try doing the same on the Kawasaki 750 triple.... If you're looking for a GT750 and have watched this video, don't worry. They are a great bike to own and parts are plentiful. Do your own research and don't depend on misinformation like this, to make your own decision
In the UK there was the Scott Squirrel introduced in the mid 1920s. It had a 600cc twin 2 stroke water cooled engine which relied on the fact that hot water entered the top of the radiator and sank to the bottom as it cooled. There was no water pump in the system. Last time I saw one of these bikes on the road was in 2010 and the old guy riding it looked old enough to have owned it from new.
@@Jim-nm1en - yes, and Laverda used the same system in their single cylinder two-stroke in the 70s/80s. I lusted after a Silk, but couldn’t afford one.
I rode and worked all these bikes in the 70s - 80s and I know how great the Honda 750 was, but I stuck to the Kawasaki, Yamaha and Suzuki's. I still prefer the 73-75 Kawasaki triples. I liked the Buffalo for long trips in the Arizona mountains but still preferred the Kawasaki 400 & 500 triples, they seemed perfect to me. Later I enjoyed the 72 & up Yamaha XS-650, I rode a 72 XS2 650 that I put together from two different wrecks across the country from Jacksonville FL to Arizona and for the next year until I sold it and bought a 1981 KZ-750E2. I would love to find a mint or close KZ-750 E1,2 or 3, that was a great bike!
Never ridden one, but old enough to remember these in the day. And yes, being Brit, it was the kettle. The GT380 and GT550 seemed more realistic but no longer lasting
Well, the bike that inspired Honda for the CB750 is the Münch Mammut.... Now, for the "complex" yet very simple GT750, it had much(!) more torque than the CB750, making it a much better tourer than the 4 stroke CB750. Me I still own one, never had any issues with it. Over here in Europe, you get all parts you need. From what I hear from the engine sound, your GT750 needs some maintenance, maybe ignition timing. Oh and of course you can eliminate the "complex" oiling system and run it on mixture fuel 1:50 Want to work on a real complex bike of that era, get the sister bike of the GT750, the Suzuki RE5.
I had the GT750 it was a nice bike to ride, but it used to smoke badly. I also had the GT380 both bikes did roughly the same speed indicated on the speedo. The 380 was a nicer bike overal I think, it sounded awsome and drove nice.
I never fancied the lumpen Suzy GT750. I've had over 50 motorbikes, but only a handful were 2-strokes, and they were mostly dirt bikes: AJS Stormer 250, CZ 250 Enduro, Cagiva 125, Montesa 414 MX, & SWM 370 MX. My first road-going 2-stroke was a Lambretta Cento scooter, followed later by a Suzuki 350. The nicest 2-stroke I ever rode was a borrowed Suzuki T500 twin, the original drum brake model which looked miles better than its disc-braked successor. Anyway, I'm a 4-stroke man, and now in my mid-70s, I ride a Yamaha TRX850, which (once suitably modified) is all I want and need!
I bought a Suzuki T20 super six brand new, not long after it burned a hole through the top of a piston, got it repaired under warranty, it did the same again within months, repaired it again at my cost, then sold it for a pittance. Found out after that, the model had a common fault whereby when running low on fuel, the feed from the petrol tap was starving one side carburettor, making that cylinder run far too hot.
I bought my GT 750 in 1986 and I still have it. It now makes around 90 hp and has 1980 GS 1000 rims and brakes. It is a fantastic old bike. Get one, you wont regret it.
My first big MC was a GT550 (air cooled 3 cyl two stroke) Was great fun until the pistons went boom in thousand parts when i accellerated , because failing oilpump. I bought a spare bike and used its engine, and then sold it. I think the new owner also soon got the engine oil pump failure, so mixing the two stroke oil in the petrol manually was the safe option.
I had one in the 70's. Great motorcycle. Had a lot of fun on it. Took it to the Smokie mountains/Blue Ridge Parkway several times. Mine had standard exhaust - not expansion chambers like the one in this video. Didn't the carbs have to be re-jetted when you switched to expansion chambers?
My first four motorcycles were 2-strokes. Kawasaki G5 100, F11 250, Yamaha DS7 250 and RD 350, from 1973 to '79. Started riding again in '89 on a KZ1000...currently ride a '20 Z400. Oh how I miss those smokers... However, most everyone I've talked to who has recently ridden or still ride 2 strokes say I'd be sorely disappointed in them after the novelty wore off. Today's motorcycles are so much more refined and reliable. I do wish someone would build a 'clean' fuel injected (affordable) 2-stroke dual sport.
I once came across an old Suzuki GT250X7 for $100...and after purchasing it had a few short rides on it around my parents farm - then eventually sold it about 2 years later for $1,500. Several years later I ended up getting a 2001 Honda NSR150SP (Repsol Edition) and using it for daily transport for a few years...and still have this bike in storage. Both bikes were a bunch of fun...and I still love 2 strokes!😊
I had a kettle in the old days, 1976, blue metallic paint, looked and rode just lovely. 45k miles including 3 tours around southern France. No complaints but prefer my Bonny
Your blue GT750 is so Smokey because you’ve got a lower crankcase half filled with two stroke oil that’s wept past the oil pump and oil line check valves. Drain it. It’ll hardly smoke. Mine only smokes if I go to high throttle openings after town work.
I rode a 'kettle' many years ago. It was my mates, I had a gpz750. Though my bike was more powerful, the kettle felt faster because of its handling trying to kill you at anything over 85mph. Speed wobble from hell.
I owned a GT750 in the early 80s. Picked up cheap with a faulty clutch. They were not popular then and the bike looked like new. The engine was a beauty, really smooth, the only bike I've ever had where you actually needed the gear indicator, the vibration didn't change from 2000 to 6000 revs. Handling was odd, it would only hold a line through corners 2 up, something was fundamentally wrong with the weight distribution and suspension. I smiled at your video, the cylinders were not oiling equally. I spent hours trying to get the cylinders to oil equally, it was easy to become obsessive checking the mirror every acceleration. I would take the metering pump apart and lap the pistons with metal polish to get them to slide equally as they tended to stick.
Prior to 1969 AMA limited sidevalve bikes (Harley) to a max 750cc displacement and overhead valve bikes (Triumph, BSA etc) were limited to 500cc. For 1969 they set the rule as 750cc for all bikes for dirt track races with road races following suit the following year. In 1970 Suzuki and Kawasaki both made 500cc 2-strokes while Yamaha had the RD350. The 1970 Daytona 200 would be won by Dick Mann on a Honda 750 (averaging 102.69mph). He'd win in 71 on a BSA (averaging 104.73mph). For 72 both Suzuki and Kawasaki came to Daytona with the 750cc triples. None of them finished. They were heavier than the 500 twins and they were faster. G loading on the banking was up. Way up. They were too fast for their tires. On day one of practice the tires would only last 4 laps. Goodyear flew in some specials but still . . . A 2-stroke would win though. Kiwi Geoff Perry on a 500cc Suzuki twin had his chain break with a lap to go while leading (he lost a lap when the flag fell as his bike wouldn't fire - talk about having a sh*t day) and Don Emde on a privateer Yamaha 350 would win (averaging 103.35mph). Whereas the 750's were cutting laps of 2:06, Emde was running 2:12's. In that same era they started the transatlantic series events and the visits to Europe by the American riders on the Japanese triples raised eyebrows. It was said that Italian riders rode as though they did not care if they lived or died whereas British riders rode as if they wanted to live and American riders as if they wanted to die. The 750 triples wound their frames up with traction and unwound when traction was lost . . .
The oil pump was bigger than what you say. It was connected to the gearbox, not by the cranckshaft. If you stopped a a light, and used the clutch lever to leave the first gear engaged, the pump did NOT move... Thus seizing the engine pretty fast. What we did here was to discard the pump, remove the bearing seals, and mix oil in the gast, some 3%. That produces a beautiful cloud of blue smoke, but the bike worked fine.
Cool bike. Never even knew anything about it. Plastic drive gear though.🤣 I really think it looks nice. I checked Limeys website and they have a lot of cool custom bikes posted that they have done. Great find Spite.🍻
I liked my 2 stroke RD400 until it turned into Stephen King's "Christine" and tried to kill me by going full throttle and not shutting down even after turning the ignition off.
I owned 2 of these. Still one of my favorite bikes of all time. Why are you saying they were expensive? They were not. I bought my 1975 for 1200.00. Way cheaper than a Honda or Clunkasaki. They were smooth (except at low speed). The sub 25 mph buck was notorious.
It needs the Vetter Windjammer fairing, bags and trunk. For a naked bike though I really prefer the Suzuki GT 550 air-cooled triple. The 550 was much lighter and reved out nice.
@@spitescorner my 40 odd year old Kawasaki's are super reliable and will out last anything new.... bullet proof, I can rebuild any part of them and they're comfortable, like most late 70's, early 80's bikes.... Don't discount them all...
The ole three cylinder two stroke Zook was faster than the tire technology of the day, otherwise it would have quite the racing pedigree. I would love to own a water buffalo..or even a Sebring or a Titan. They just aren't anymore...
You have to be kidding, this is among the simplest multi cylindered bikes in the 750 range of it's time, It's a two stroke, lest I bother to explain to you what moving parts it lacks compared to the 750 Honda 4 stroke 4 cylinder or any of the other 4 cylindered big bikes.
A friend had one back in the day. He had to ride back of the pack between the smoke and an oil freckle bath if you followed him! Plus hew was riding with a group of Honda owners.
Not sure what you mean about plastic oil pump gear…. Pump is driven by metal at the back of transmission. Water pump gear is plastic maybe that’s the source of confusion
I have ridden Mostly Big 4 strokes Since The 1970s Nortons, Ducati and V4 Hondas however I adore 2 strokes they are so exciting to ride, I have a Yamaha RD350LC in the garage and still regret selling my Suzuki PE175 Enduro. You offer me an H2 Kawasaki with original Pipes at a reasonable price I will buy it. It only needs a change of rear shocks, shims on the front springs, oil tuning the forks and it is not a widow maker. Now back to your Suzuki 750. An interesting Fun Bike. For me in the past it was too Porky. Now the first models had twin sided drum breaks. I acttually have a Suzuki 750 front break lever on my Norton 750 café racer which has custom built twin sided front brakes. As I said the GT750 was Porky but we called it "The Fat girl that can pick up her skirts and fly". What would really tempt me? In France Moto Martin made a lightweight race chassis, you dropped in a GT750 motor, put on expansion chambers a bit of porting, skimming and you had "The Queen Bitch" I have not seen one in years. Probably all raced crashed and seized. However, love your bike, ENJOY
Don't forget the swing arm bushings. The original H2 and Z900 bearings were made from some kind of impregnated cardboard. If I remember well they even had the same partnumber.
