russktm
Drag-strip hero
Finally on the road!!
Posts: 281
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Post by russktm on Jun 14, 2006 16:24:24 GMT 1
Hi everyone,
I'm new to the site,and i'm in the middle of rebuilding a 250lc.I've
got two 250 engines, one running in the frame, the others on the bench which i'm gonna convert to a 350.
I've got 350 barrels and pistons, but do i have to change the 250 carbs, or just re-jet the carbs??
Will 350 ypvs carbs do the job? or do they have to be 350lc carbs
(non ypvs).Any help would be gratefully received.
thanks Russ.
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Post by Norbo on Jun 14, 2006 17:06:57 GMT 1
Hi Russ. Welcome to the site.
You can run with 250 carbs but 350 or ypvs would be better. They do race on 250 carbs as they give more midrange. But on a road bike id go ypvs any will do 31k or 1ua carbs. What ever you use you will have to rejet to soot the bike . TZR 250 KR1 and RD A/C carbs are all ok and are 28mm.
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russktm
Drag-strip hero
Finally on the road!!
Posts: 281
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Post by russktm on Jun 14, 2006 17:22:38 GMT 1
any ypvs carbs? jap or brazilian?
thanks lads!!!!!!!
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russktm
Drag-strip hero
Finally on the road!!
Posts: 281
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Post by russktm on Jun 14, 2006 17:28:29 GMT 1
are the 250 and 350 lcs crank and bottom ends, gearbox etc. the same?
is the pistons barrels and carbs that are different?
once again I thank you!!!!
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russktm
Drag-strip hero
Finally on the road!!
Posts: 281
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Post by russktm on Jun 14, 2006 22:19:11 GMT 1
Cheers dirtbag,
i've got both cdi an oilpump of a 350, thanks again lads!
Im sure i'll have a few more questions before long.
thanks again!
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Post by scott on Jun 15, 2006 19:08:52 GMT 1
glad i red this,never knew the cdi's were different aswell :-/av to look out for 1 of them now
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Post by Norbo on Jun 15, 2006 21:57:37 GMT 1
You will have to change the little end as well with a 350 top end the 250 one is to small.
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jun 18, 2006 19:03:21 GMT 1
got a cdi if your still after one as im puttin ypvs in mine
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