New OEM cylinder-Yellow coating?

23champ · Post by **23champ** » August 5th, 2011, 3:30 am

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.

mr500 · Post by **mr500** » August 5th, 2011, 3:45 am

Mate,I'd be starting to suspect it's not a NEW cylinder.

Tharrell · Post by **Tharrell** » August 5th, 2011, 4:51 am

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.

fastkart · Post by **fastkart** » August 5th, 2011, 5:17 am

The coating is called cosmoline. Take it off with brake cleaner.

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » August 5th, 2011, 6:09 am

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.

23champ · Post by **23champ** » August 5th, 2011, 8:06 am

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!!

100hp honda · Post by **100hp honda** » August 6th, 2011, 11:47 pm

honda jugs are good. .00o35 with wiseco

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » August 7th, 2011, 9:24 am

100hp honda wrote:honda jugs are good. .00o35 with wiseco

wtf kinda jib-jab you talkin?

100hp honda · Post by **100hp honda** » August 7th, 2011, 1:42 pm

had to much beers

BannedCR500Riders.com

New OEM cylinder-Yellow coating?

New OEM cylinder-Yellow coating?