Turbo outlet size and upper intake inlet size?

Started by 90TGP, March 25, 2004, 08:07:24 PM

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90TGP

March 25, 2004, 08:07:24 PM
Does anyone know how big the stock turbo outlet is? I think it's 2".

Also, does anyone know the size of the inlet on the upper intake pipe?

Thanks

no1kicker

#1
March 25, 2004, 10:18:27 PM
The lower intercooler pipe is 2", if that helps.


former owner of a 1990 Grand Prix STE Turbo

Tooky

#2
March 25, 2004, 10:24:32 PM
The stock turbo outlet has gotta be smaller than 2", it's really small.  I would guess 1.5-1.75"
Josh Straub
1990 Pontiac Turbo Grand Prix, GT2871R 475HP-capacity turbo, built 4T60, 28# Injectors, DIY Ostrich realtime chip tune, JeffM Crossover, Cold A/C, BoostValve.com manual controller @ 14 PSI.  200,000 mi factory original motor.  Best time on T25 @ 11 PSI: 14.78 @ 93 MPH.
1991 GMC Syclone: 11.79 @ 114 MPH. Stock with PT51 turbo plus SMC alcohol injection and tuning, 24 PSI

sleeperred90tgp

#3
March 26, 2004, 04:09:07 PM
Just posted all the sizes , oh maby a month ago. Either on here or w-body.
Jud
Quickest TGP on this planet.

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