compression ratio & psi question

[Mr.Samples]

i was reading about one of Turbo Mag's project cars, a 2000 Celica GT-S and one of there big addons was a Blitz Supercharger wich was setup to run 6 psi.

The GT-S Compression ratio is 11.5:1
The GT Compression ratio is 10.0:1

since the GT has a lower Comp ratio then a GT-S could it run higher psi like 7 or 8

 

[CBgst]

I think it should.

 

[nine5raptor]

mr samples, are you part of kcdsm?

 

[talonted_one]

yes...given your internals are strong enough to handle it.

 

[LaserRST]

Run what you like... just be able to tune it and handle the pressure

 

[Enigma_Man]

yeah, it's all a matter of how much pressure the head and gaskets and internals can take. Higher compression ratio = more force, and higher compression pressure = more force, so without a lot of math, and knowing exactly how the motors are built, it's hard to say if that decrease in compression ratio would allow that much more pressure to be run, ya know? But in general yeah, if you relieve force somewhere, you can make it up elsewhere.

-Jesse

 

[deth2u]

instead of the celica I'd like to see somebody twin turbo the eclipse 6g72
(compression 9.0:1)
the 3kgt VR-4 manifolds will bolt up, just add 9b turbos, oil and water plumbing, bypass valves, etc. I was planning on doing this until i saw the prices on rebuilt 9b's and had a mild heart attack. Funny part is when the stock airbox and resonators are removed, there's a GAPING 1 and a half foot hole you can see stright to the ground though there where it looks like there originally was plans for a turbocharger...hmm

Mitsubishi tried (very little) to make this a performance car, it comes stock with 60mm trottle body, long plenum intake manifold, small tube headers, and a few other little goodies but too bad it came out lacking in the end