18RC and 18RG

**ganador** · 06-11-2006, 04:50 PM

Hey guys, i would like to know if 18RC pistons and crankshaft are interchangable with the 18RG.

**Norbie** · 06-11-2006, 05:09 PM

Crankshaft, yes. Pistons, sort of. They'll physically fit but the valve reliefs won't match and you'll end up with an "interesting" compression ratio.

**ganador** · 06-11-2006, 05:17 PM

Originally Posted by Norbie

Crankshaft, yes. Pistons, sort of. They'll physically fit but the valve reliefs won't match and you'll end up with an "interesting" compression ratio.

Would it be safe to use pistons or just stupid??

**RT104GT** · 06-11-2006, 09:24 PM

Originally Posted by ganador

Would it be safe to use pistons or just stupid??

NO You will bend your rods or the valves or both, pistons need relief cutouts for the inlet valves at least or two head gaskets and your comps will be oh about 7.5 to 1.

**ganador** · 06-11-2006, 11:47 PM

Originally Posted by RT104GT

NO You will bend your rods or the valves or both, pistons need relief cutouts for the inlet valves at least or two head gaskets and your comps will be oh about 7.5 to 1.

ok thanks mate. i felt like i was getting in trouble at first, hahaha.