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 4g94 Capabilities?, boost question
 
pb3eclipse
post Feb 22 2008, 03:24 PM
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Hey everyone, I need to know if anyone knows how much psi a stock 4g94 engine can hold before it goes boom. My wild guess would be around 10-12. Haven't been able to find this info anywhere so i would appreciate the help.
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mfalik
post Feb 22 2008, 04:14 PM
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QUOTE(pb3eclipse @ Feb 22 2008, 04:24 PM)
Hey everyone, I need to know if anyone knows how much psi a stock 4g94 engine can hold before it goes boom. My wild guess would be around 10-12. Haven't been able to find this info anywhere so i would appreciate the help.
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To preserve the engine for long term, run no more than 6psi.
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EMC 3000gt
post Feb 22 2008, 04:55 PM
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depends on what turbo.
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4g94T_gt28r
post Mar 11 2008, 02:04 AM
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blew my motor at 12.5 psi t3/t4
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mfalik
post Mar 11 2008, 06:53 AM
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QUOTE(4g94T_gt28r @ Mar 11 2008, 03:04 AM)
blew my motor at 12.5 psi t3/t4
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How many miles after install?
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Shingen
post Mar 13 2008, 08:28 PM
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You would be right... but this, as has been said, depends on the turbo. The 4g94 is good for about 6psi non intercooled. About 9 psi intercooled. Up to 12 with forged pistons and rods.

The rods are the weak point of this engine and will need to be upgraded if you want to push past 12psi. The strongest 4g94s are pushing 19psi and running about 310whp.

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Travis k
post Mar 14 2008, 01:34 PM
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I would say 7 psi
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ronadinho10
post Jun 17 2008, 06:53 PM
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go 6 psi intecooled just for the fun of having turbo and beating civics and crappy cars like that !!!!
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