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engine conversion


danzley0
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Study this diagram carefully

Intake_01_HighPressure.jpg

Is it one of those magic eye pics? :blink:

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Some 125 and 250 parts seem to be shared but there seems so little info on the 125 I think that it would be a nightmare.

In an ideal world you could just buy a 250 engine and hope it bolts on. Easier than seeing if it is just the barrels, pistons and conrods that are different.

I think it would be a case of surfing to see if anyone has done it and if it is a drop in I am happy to meet up and help. Not volunteering to change the barrels, too much messing about.

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as far as i can tell i think it would just mean new cylinder head and block

everything else seems to be the same maybe a brake upgrade ;)

and thanks for the offer DT might take you up on that just sourcing parts and advice at the minute though

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Some 125 and 250 parts seem to be shared but there seems so little info on the 125 I think that it would be a nightmare.

In an ideal world you could just buy a 250 engine and hope it bolts on. Easier than seeing if it is just the barrels, pistons and conrods that are different.

I think it would be a case of surfing to see if anyone has done it and if it is a drop in I am happy to meet up and help. Not volunteering to change the barrels, too much messing about.

In the immortal words of Scotty on the star ship enterprise " the crrank cannae tek it capn" :blink:

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In typically cautious fashion, my view is be cautious.

Are you able to ride said 250 legally?

You currently have a working bike, a failed project may leave you without one at all.

Parts may be difficult to come by (in good order)

Spend any funds available for conversion on a 250 restoration job, then have 2 bikes of flog the 125 to recoup cash.

In any case, best of luck with it, let us know how you progress :)

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as far as i can tell i think it would just mean new cylinder head and block

everything else seems to be the same ......................

Trying to swap everything on the top end will be a nightmare, timing and the like. Isn't there a nice 250 complete engine for sale? I brought a TS250 engine for under £100 the other week. Just the gaskets and stuff will probably make it cheaper to put a whole lump in.

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