speed

I have a stock GSR motor with 110000 mile on it.I want to run 12-14 psi daily...Should I rebuild before boosting?

The_Head

If youre going with that much boost, it certainly wouldnt hurt. I would be nervous boosting a stock motor that much. But, that's just me. My view is on the conservative end on this board.

2K_TEG

yes. rebuild it.

speed

anymore?

Doogie Howser

if the compression is good id run 10-12 boost on it till it blows then rebuild, you never know you might get another 50,000 boosted miles on it

Hammett

I would rebuild the engine first for higher boost application.

shermanyang

iTrader: (1)

BOOST IT and let it blow!! well, it's not my motor so that's why i'm saying this.

BoM

boost it first. run low psi
then push up the boost, blow the engine and then rebuild.

skilzz

yeah install thicker head gasket for that kinda boost and boost away, rebuild later. You have nothing to lose this way.

tegasaurus

don't install a thicker head gasket. You're cam timing will be off. Just boost 6-8 psi, till you have the money to rebuild, then boost 12 psi, blow it, rebuild it, love it, tune it.

blufke

just boost it. maybe not that much but boost it for sure.

skilzz

Careful how you say this. You make it sound as if installing a thicker headgasket will damage his motor. Installing thicker head gaskets (and I've installed quite a few) did not make a noticebale difference in performance. It advances it just a hair but not enough to worry about.

speed

The motor is not in the car yet.So I can't comp. check it but the motor came out of a modestly driven GSR.Should I just throw it in the way it is?