Tdr250 engine

[Bugsy]

Bought a project bike, have a fresh topend ready to bolt onto bottom end.
Engine turns freely doesn't feel like there's any play in the crank etc.
Bikes covered 23 k last ran in 2006 is worth rinsing the bottom end out with deisel and bolting it all up together?
Or is there more chance that the crank seal will have failed?
Not sure which way to go,as it's big bucks to rebuild.
Any help would be ace

[redeem ouzzer]

If the crank feels good I'd be inclined to put it together and fire it up. You can't really check the seals without rigging up to do a leak down test. Personally I've never known seal issues on a Yam and if they are gone it's not the end of the world.
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Be a REAL MAN!

[stevo as b4]

It's a bit of a bitch to have to re-strip a fresh top end as well as have the rest of the motor out of the frame and stripped down, if the seals hold for 50-200miles though?

If it's not ran for 10 years and especially if the engine was disassembled and left open, then Id expect the seals to be toast, or pretty close to it, unless the motor has been filled up with oil to keep them wet.

I could be wrong and everything might be fine, but it's a bit of a bitch if you find that you need pull the motor out and have it apart in a few 100miles or less if the crank seals go?

[Bugsy]

Thanks guys, think I'm going to rebuild its a complicated engine with all sorts of cables and stuff around the top end compared to the simple kmx daily ride anyway

[Rob Fzs]

Complicated? there's just the pv's surely that makes it any diff
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30> Yamaha RD350 YPVS F2 > Kawasaki ZZR 600 D1 > Yamaha TZR 250 2MA >Suzuki TL1000R > Yamaha TDR250 > Honda 929 blade > Suzuki SV1000 > Honda H100
Mod 2 Passed 09/06/2011

[Kickstart]

Hi

I would probably just drop it in the frame and try it. It is going to be far easier to put in place than to rebuild.

And for a quick check of how it runs you could just avoid connecting the power valve cables (although they are pretty simple to connect up).

All the best

Katy
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[Vincent]

Get it running..........they're more fun than a box of whores
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