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New OEM cylinder-Yellow coating?
Posted: August 5th, 2011, 3:30 am
by 23champ
I just bought a new OEM cylinder. Anyone know what to use to get the yellow coating out of the cylinder? Its been ported, and has the rear transfers epoxied. Dont want to use a harsh chemical that might compromise the structure of the epoxy.
Posted: August 5th, 2011, 3:45 am
by mr500
Mate,I'd be starting to suspect it's not a NEW cylinder.

Posted: August 5th, 2011, 4:51 am
by Tharrell
mr500 wrote:Mate,I'd be starting to suspect it's not a NEW cylinder.
Yeah, a little more explanation and some pictures would help.

Posted: August 5th, 2011, 5:17 am
by fastkart
The coating is called cosmoline. Take it off with brake cleaner.
Posted: August 5th, 2011, 6:09 am
by Roostius_Maximus
its definately new with that coating, brake kleen / solvent / gas, whatever is closest.
Check the BORE!!
The last few new ones i've recieved havent been useable at standard
The most recent one was .001 tight 1"from the top, .002" loose close to the transfers and .003" tight for the bottom 1.5"
I had to bore it oversize.
Posted: August 5th, 2011, 8:06 am
by 23champ
I guess I should have clarified it a little more. "I" HAD IT PORTED.
The fact that the bore's have not been straight is very reassuring, since I have to have this motor ready to roll buy Wed. , and have already ordered the top end. Yay!!

Posted: August 6th, 2011, 11:47 pm
by 100hp honda
honda jugs are good. .00o35 with wiseco
Posted: August 7th, 2011, 9:24 am
by Roostius_Maximus
100hp honda wrote:honda jugs are good. .00o35 with wiseco
wtf kinda jib-jab you talkin?
Posted: August 7th, 2011, 1:42 pm
by 100hp honda
had to much beers
