V4 Looper Pist Clearance?

[oldschoolltv]

I have a 1985 v4 looper I am boring to 2.0 spec 3.685 but this will put clearance at 4 thou and this seems tight to me I want it as tight as possible but not tooo tight I was thinking 5-6 thou any help would be greatly appreciated, thanks Matt

p.s. they are std bore 1988 omc pistons, not wiseco

[B.Leonard]

Depends on what you're gonna do with it. Stock, original intended use with the right break-in 4-5 is probably ok. People run the Wisecos a thou or more from 6-9. Are they new pistons? Used? That will make a diff also.

If the motor is going to see some hard use with a lead foot driver that can't spell "break-in" or "warm-up" :D I'd set it at 7-8 up to 9 for a forged Wiseco. Somewhere in between for other uses. It's nice to keep it tight because the rings wear a little better and the motor has a bit more compression at low speeds but that won't mean a whole lot if one of them smears. :rolleyes:

-BL