Yamaha TZ750 engine rebuild

My Yamaha TZ750 engine rebuild with new mains, rods, seals, pistons, Nikasil barrels, etc Ross Crymble

[@ramishrambarran3998]

I am 68 and although there never was one in our country, we all knew about the TZ. This is a wonderful piece of engineering, a wonderful historical machine. Please keep it alive ! Trinidad & Tobago. West Indies.

[@suzukiyesteryear]

A crude motor when compared to the NSR’s and YZR500’s but absolutely thrilling to ride these beasts and a pleasure to work on, owing to their simplicity. Second most saddest day of my life when I sold my TZ750…will always miss it…

[@fw1421]

2 stroke engines are so simple to work on. Just have to make sure the jetting is spot on.

[@donbrashsux]

God what a beautiful beast she is

[@xenuno]

Totally

[@matthewwhite4008]

Thanks so much for letting us see the piece of Tz history my father and uncles raced td and tz through the seventies and eighties so tzs have a special place in my heart

[@davidciesielski8251]

Congrats!!!! I'm 64 myself...so my point of view, sexy, so clean, so honest just everything it should be!! Thank you .

[@Jay_Speed]

Very nice liked this, it's good the legend is still alive.

[@petrichor649]

I proper love those bikes, grew up on LC's and raced against TZ's in open class club racing on a big 4 stroke. The smell.....

[@richardho5955]

10/10…Top job! 👏👏🏍️❤️

[@garrymcdonald7994]

I am so jealous! All the best!

[@PeacefulRallyCar-pw3cs]

Fast as a modern gp bike with 1/4 as many parts.

[@Doug791]

Holy moly this is beyond wonderful , I can almost smell it. I'm not in the least bit jealous , where do you live?😂😂

[@captainsensible298]

With unlimited funds, I would have one, just wicked machines.

[@johnmunns5964]

Awesome👍

[@queenslander954]

All that classic power going through a 160 tyre on the back ….

[@Rosscrymble1]

Actually a 150!, but you're right. Back in the day it was KR124's and KR164's, that's scarey!

[@dr.hugog.hackenbush9443]

140hp out of the crate. Much more available. Didn't these have a reputation for eating clutches at the time?

[@Rosscrymble1]

Yes, but everyone was so used to the almost bullet proof TZ250/350 clutches that easily lasted a whole season of pure abuse that only getting two or three starts from a TZ750 clutch seemed terrible despite its increased size. But when you double the power and add some weight that’s what happens. On the plus side because the crank rotates backwards on the 750, reversing the thrust side of the piston away from the massive inlet port, piston life doubled compared to a 350. 😄

[@daltoaugustodepaulaaugusto8404]

Nunca tinha visto um motor de tz750 aberto. 🇧🇷🇧🇷 incrivel.

[@user-mf4xm2sf6v]

Cool 👍👍🍻🍻

[@fjp3305]

That bike is a dream! I wonder why it has three silencers on the right and only one on the left, instead of two on each side.

[@Rosscrymble1]

No room for 4 fat round expansion chambers underneath the bike so one pipe had to go around the back of the carbs

[@SteeeveO]

Rebuilding an iconic 2 stroke race bike is fine, but clearly you need some help with laying slab paving....😁

[@jeremybrazzi5speed301]

Be cool to put one in a BANSHEE😮

[@timessix8434]

Brilliant! Good job. Is this the same engine Yamaha used in their Vmax4 snowmobile?

[@Rosscrymble1]

No but the same layout and cc, the TZ750 motor complete with gearbox was built by Yamaha from 1974 to 1979 for road racing, and famously the odd dirt tracker. The VMax-4 was snowmobile only (no gearbox, longer stroke etc) and came out much later, 1990’s I think. Nice motor though and I wonder if anyone ever converted one for use in a bike?

[@ekspatriat]

So can you get genuine Workshop Manuals like you can for road bikes? Also 'Microfiche' parts lists etc.

[@guylr7390]

Parts lists are available online.

[@Rosscrymble1]

Yes, they came with them from Yamaha, I doubt Haynes or Chiltons do one though 😃

[@douglasmontilva1800]

Jhonny Cecotto Winner mith this superBike

[@peipei8553]

33 💨👍🏽🏁

[@blackink5686]

??What is that rear suspension layout?? and length i've never seen before.Whywhy?🇯🇵

[@Rosscrymble1]

Cantilever rear suspension with the long mono shock was standard on most Yamaha TZ125, TZ250, TZ350, TZ500 and TZ750’s. TZ250 & 350 “C” models (1976) where first from memory. It was a massive improvement over the old twin shock rear ends especially for the bigger bikes that wanted to tie their chassis in knots.

[@dennisyoung4631]

Do these want Castor oil in the fuel?

[@Rosscrymble1]

Sure do, Castrol A747 15% castor oil