Mr Gadgets

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

kevinr

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

TylerCrockett

iTrader: (1)

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.

Mr Gadgets

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

cstraub

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.

Reed Jensen

Is that like a " plateau " finish?.........