Thread: IC Boost Pressure

I think I'm having a leak issue with my garleak gasket, just want to see what you guys think. I have a Gen V with a 3.4" pulley on a WBS 2.25" IC. I'm only seeing high 7's through most of the rpm range and it will peak usually right under 10. Seems a lil low to me, thoughts?

on my stock 3.8 I have hit 9 so yep sounds like a leak.

You have 9psi on a stock pulley with headers, wtf?

what are your ltft's? If they are 16.4 at idle or basically at all times ten you have a leak. Im goign through that right now and cant seal my core for **** no matter if i use garleak or oem gaskets. Im still thinking im leaking from somewhere else.

Originally Posted by footballplaya3k

You have 9psi on a stock pulley with headers, wtf?

There in the basement lol

Originally Posted by matt5112

Sounds normal to me.

Similar numbers here.

High comp block though.

Good to here. Shouldn't yours be a lil higher then?

I'll check my LTFT's today, I've been neglecting them.

Found a SC bolt just sitting in place, not tight at all. Looking like I'm at 7.5 to just over 10 now.

Originally Posted by matt5112

Nope.

Boost pressure is a sign of restriction (related to flow)

Since our motors both use the same camshaft, rockers, heads(flow numbers should be nearly identical), headers, intercooler core... I'd say they flow pretty similarly.

Just can't run as much timing because the compression gets in the way.

Yeah idk why I thought boost would be effected by your compression.