02 sunfire ohv project - Newbies Forum

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02 sunfire ohv project
Wednesday, March 01, 2017 6:45 PM
Wondering how much boost the factory internals can hold plan on redoing the whole motor but for the starts I wanna put a t3/t4 kit I found online and was wondering how much to set it at or what not.

Re: 02 sunfire ohv project
Thursday, March 02, 2017 1:03 PM
I have a buddy who ran 25 psi and sometimes more on a regular basis on stock internals before he blew the motor. But he did swap in a new motor and continues to run 25 psi. it takes a bit for the motor to blow. It seems the 2200's love boost. Id say you can run 15psi, upwards to 20 psi fairly safe on stock internals
Re: 02 sunfire ohv project
Thursday, March 02, 2017 4:02 PM
They'll do about 275-300whp if the tune is done well and the motor is healthy.

Psi is a terrible measuring stick for this. 20 psi from a gt35 is a lot more than 20psi from something small like a t04e.


"A car just isn't a car without a little blood, sweat, and beers." -- Shadowfire
Re: 02 sunfire ohv project
Thursday, March 02, 2017 6:32 PM
Motor has 130 831 miles but I do give a bit of hell.
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