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Posted
I don't personally piss around with polishing, there is a limit to how much you can do without getting fanatical and obsessive about it shaving a tenth of a second off a cut - I have ben there:001_rolleyes:

 

I know, but I wanted to leave him something to be at!

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Posted

I've read in a few porting guides that a polished surface causes the mixture to shear as the fuel starts to stick to the intake tract, causing the oil to separate before reaching the case.

Posted
I'd go to the AS site and look up masterminds threads and the porting 101 threads before you tear in to a jug like a 254xp. He does start to finish porting walk-throughs.

 

as site ?

Posted
here is an muffler for a dolmar 7900 / 7910 i was wondering what you guys thought

 

That looks like one of the ones Stubby has fitted to his 390XP and 372XP, damn loud, the neighbours loved it:001_rolleyes::lol:

Posted
ta spud,be interested to see what you did to the254 you tuned

 

Widened the inlet and exhaust ports and opened up the piston windows then opened up the air filter union:thumbup:

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Posted
Widened the inlet and exhaust ports and opened up the piston windows then opened up the air filter union:thumbup:

 

nice :thumbup:

might just have to send you mine,

would you want the whole saw or just piston and cyl ?.

i have 3 x 254 xp`s so would`nt miss 1 :biggrin:

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