Kevin -

The grinder is scheduled to be delivered sometime today, so I'll see how it works.

The rings supplied by Wiseco are Sealed Power. The second ring is iron, the top ring is steel - and very, very hard steel at that.

I'm following the Wiseco "Street-Moderate Turbo/Nitrous" recommendation for end gap on the rings Their supplied chart indicates .005"/1" bore dia. for the top ring, .0055"/1" bore dia. for the 2nd ring. So, with a 3.602" bore, I need .018" gap on the top ring and .020" gap on the 2nd ring.

I'm a little concerned that since I'm not running an intercooler I should increase the gap a little more, but I guess if it was an issue, I would have experienced broken rings on the original engine that had factory standard ring end gaps.

Wiseco claims that the wider 2nd ring gap helps reduce top ring lifting or flutter.

Wiseco

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum