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Post Info TOPIC: Rebore question


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Rebore question
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Bought this off ebay, someone has done a right job xD

Its 56.4mm(i think) 3mb00 y-1  barrel

Is it ok to just rebore and slap on mine?

How big a rebore would i want to go? the groves are pretty deep

and mine is a 56mm so will this even fit?

p.s do i need to remove the exhaust and head studs?



-- Edited by shotti on Thursday 3rd of October 2013 08:42:38 AM

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Yeh it is, all the ports have a lil missing like someone took a dremmel to it.

thinking about just getting a new 56mm piston(for the bareel currently on my bike) and seeing how that goes.

they sell the mitika pistons in my town so no need to order



-- Edited by shotti on Thursday 3rd of October 2013 05:50:04 PM

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Pic 2. The transfer port. Is that a massive chunk missin there? Fck! That would probably need a resleave!

But those scores are nothing. Dt would run with those. Just loose compression. Moght get away with just a hone. Easy way to tell is to take it to a specialist and they'll tell you.

Yes. The pv, exhaust studs and head studs need to be removed. No biggy.

Personally i made rhe mistake of ordering the part without letting the specialist see it. They can usually order the part for you. Which is what i'll do next. Makes it a bit easier. They can determine how far they'll need to go. No need to unnecessarily bore out more than whats needed.

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I got a barrel and a new OS piston if u want

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I would say its not financially viable to use that barrel. A Resleeve costs around £165, a new piston kit will be around £40.

You would be better off buying a cheap 2nd hand barrel ( get one as close to standard bore size as possible). Send that away to get rebored.

Rebore 25
piston kit 40
postage circa 10-15

whats wrong with your barrel on the bike?


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Thanks for fast replys, yeh can't see myself going for a resleeve

my current barrel is fine just its on 19k miles on original piston 2nd set of rings

and it's my only mode of transport so im just paranoid it's due a new top end

compression isnt great but it has decent power still but surley its due something?

p.s how much ezegreen? and does it come with pv?

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