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Old 01-16-2004, 12:17 AM   #1
norcaliwrx
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Default how much psi can the stock engine hold?

As the title says........what psi can the engine with stock internal's hold? ALso what are the weak links in the engine internals? i hear its the rods then i hear its the pistons etc. Just wondeirng if anyone knows for sure.
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Old 01-16-2004, 12:35 AM   #2
cronic
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sorry man there is no set number to engine failure.. There are other factors that contribute to the death of your motor..
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Old 01-16-2004, 01:10 AM   #3
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eleventy billion psi.
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Old 01-16-2004, 04:07 AM   #4
mr2guru
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I have heard of 24psi on a WRX stock block

Bad tuning will destroy the pistons in short order. Rods and rod bearings seem to go on the very high, well tuned, hp cars if anything. Over time on the mid to high hp cars the cyl liners tend to oval.
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Old 01-16-2004, 06:58 AM   #5
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I have been running ~20psi every day for the past 5 months and put ~10000 miles on the car. I tuned it my self with no WBO2. There have been no problems. I just scared the crap out of my self and hit the fuel cut in the utec this morning because of the cold.

TMS
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Old 01-16-2004, 10:13 AM   #6
mbiker97
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The pistons can have problems if your tune is bad. There really isn't a magic don't go above this boost level though.
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Old 01-16-2004, 12:28 PM   #7
WRX Jim
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depends on tune, turbo size and what not.

I can run 21psi on one map setting ... i havent done it for extended periods though.

I run around on about 17.5psi daily ...
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Old 01-16-2004, 01:02 PM   #8
SupaSizeFries
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I know of one person that BRIEFLY (as brief as brief can get) spiked to 30 psi. He was lucky enough to still have the engine in one piece.
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Old 01-16-2004, 01:04 PM   #9
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Quote:
Originally posted by SupaSizeFries
I know of one person that BRIEFLY (as brief as brief can get) spiked to 30 psi. He was lucky enough to still have the engine in one piece.

On what turbo?
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Old 01-16-2004, 01:09 PM   #10
pjcoregon
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Sponaugle was running about 25 psi with his stock block while he built his frankenstein 2.5... the biggest factor to your boost is having adequate fuel and management of the fuel in place to support it.
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Old 01-16-2004, 01:10 PM   #11
SupaSizeFries
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Quote:
Originally posted by TheMadScientist
On what turbo?
I forget, but I know he bought it from XS Engineering and it was pretty pricey. He blew the pipe clear OFF the throttle body in his FMIC set up. Stock internals too.
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Old 01-16-2004, 02:03 PM   #12
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I have run 2 bar of boost on stock EJ205 engines. Jeff Sponaugle ran ALOT of boost on one of his Stock bottom ends.

Clark
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Old 01-16-2004, 04:35 PM   #13
subieworx
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I ran 25 psi daily in my Talon on a big 57 trim TD04E, 13.5 in my WRX
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