Need advise 2.5 na common block in turbo app.. - Turbo Dodge Forums : Turbo Dodge Forum for Turbo Mopars, Shelbys, Dodge Daytona, Dodge SRT-4, Chrysler PT Cruiser, Omni and more!

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post #1 of 5 Old 11-11-2012, 04:02 PM Thread Starter
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Need advise 2.5 na common block in turbo app..

Ok,i have an 89 spirit es that someone put a 2.2 shortblock in after blowing up the 2.5..2.5 turbo motors are getting hard to find here in colorado so i was tossing around using a common block NA 2.5 shortblock in my car..obviously i have to drill the turbo drain line,but what other issues could i run into?i am going to use the turbo head etc,but i have seen people say that the rings could be an issue as well as the pistons and rods..i only plan to run about 10-12 psi thru an intercooler. any advise you guys can give me?
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post #2 of 5 Old 11-11-2012, 06:18 PM
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Re: Need advise 2.5 na common block in turbo app..

1989
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Plymouth Voyager ,COMP 130 TOP TIMING COVER GONE DK0084 $350 Trade Center Auto Salvage, Inc. USA-CO(Delta) Request_Quote 800-868-8698 / 970-874-4806 Request_Insurance_Quote


Better to but this one.

N/A block is fine, crank is fine, but higher compression pistons and skinny rods. They'll break easily in a turbo application.
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post #3 of 5 Old 11-11-2012, 09:30 PM
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Re: Need advise 2.5 na common block in turbo app..

Ive run up to 16psi on a tbi bottom end with a mitsu turbo and a shitty intercooler. Meaning HOT.

I think 12-13 psi with an intercooler is fine.
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post #4 of 5 Old 11-11-2012, 10:13 PM Thread Starter
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Re: Need advise 2.5 na common block in turbo app..

tryingbe,that is a pretty good deal,sucks its on the other side of the state...may have to see about taking a road trip..

vigo,i would think the shortblock would live,especially since i am at almost 5000 ft elevation so the compression will be lower to start with.
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post #5 of 5 Old 11-12-2012, 09:26 AM
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Re: Need advise 2.5 na common block in turbo app..

The trip across the mountains this time of year might be tricky
Ive talked with 87csx692 about this a bit, my question is If he put on a "G" head it will get the compression back why will this not work ? Car has mopar performance computer for 2.5 auto. ive read on here they need more fuel so that should help. also ive read they need alot of timing on a later turbo engine, im sure that has to do with killing the compression. ??
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