How many psi will my turbo support

[toddipoo]

For a long period of time.
its a 1985 T1 garret with a new core.
I was thinking 20psi all the time but before i do the fuel mods i want to know if my turbo will hold out?


-toddi


And yes its intercooled

[gti_7]

Hi, not sure this helps.. but,
from from Gary D's page..

"One of the first questions a turbo owner wonders when he gets the itch to go faster is, just how much boost can his cars turbo produce and how high can I go? Here is a chart based on my personal experience.


1984-1987 Turbo I Garrett
20+ psi with alcohol injection or an intercooler

Modified Turbo I Garrett
26+ with intercooler & race gas. See conversion page HERE

1987-1989 Turbo II Garrett
28-30 psi with intercooler and race gas

1989-1990 VNT
Less then TO3 due to smaller compressor

1991-1993 Turbo III
unknown

1988-1993 Mitsubishi
20-21 psi with intercooler

S-60 with 2.5 engine
25 psi with stock intercooler, 30 with large intercooler, race gas


This is based on my "hands on experience" so far I can honestly say I have not had any turbo failures related to running these turbos outside there rated specs. HOWEVER I'm careful to use Mobile 1 motor oil at all times, I let my turbocharger cool down after spirited driving, I have a blow off valve (see BOV page) and perhaps I have a bit of luck on my side after all these years.

The candle that burns at both ends burns twice as fast, but at 30 psi it burns pretty **** bright.

Running your turbocharger outside its rated boost range also voids it warranty. 'nuff said"


again hope this helps..
Bernard