Cylinder wall finish with moly rings??

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11-15-2005 | 06:15 PM

Mr Gadgets

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From: Holland, Mi USA.

Cylinder wall finish with moly rings??

What kind of finish should my machine shop be putting on my cylinder bores and how do you go about doing it?

I had Total seal gapless top rings and now going to a plain moly ring... what kind of techniques do you pro's have to get it right??

Thanks
Dick

11-16-2005 | 05:21 PM

kevinr

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From: Crawfordville Florida

Re: Cylinder wall finish with moly rings??

finish in 400g or 600g , then we platue finish

11-16-2005 | 06:39 PM

TylerCrockett

Michigan Mad Man

Joined: Feb 2003

Posts: 1,172

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From: Ruby, Mi

Re: Cylinder wall finish with moly rings??

Quote:

Originally Posted by Mr Gadgets

We use a 220 grit stone with in 3 tenths then use a 280 grit to size then we stroke it 2-3 times with a 400 grit stone.

11-17-2005 | 04:51 AM

Mr Gadgets

Thread Starter

Charter Member #601

Joined: Dec 2000

Posts: 3,276

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From: Holland, Mi USA.

Re: Cylinder wall finish with moly rings??

Hey Thanks guys for the replies. I did some reasarch and it seems to be a lot of ways to get to the right finish..
Now I will talk with some intelligence with the machine shop..

Dick

11-17-2005 | 08:01 AM

cstraub

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From: Tri-Cities, TN

Re: Cylinder wall finish with moly rings??

You also may want to open the second ring up some more. Piston companies are finally writing some tech about this do to findings in ring flutter at mid to high rpm and the HP loss it can cause. Going 25% larger on the second ring helps to control flutter.