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1993 non turbo 2.0 DOHC. how many psi turbo can stock internals handle? could it handle 18 dependably? 4g63?

1993 eclipse GS non turbo model

4G63 non turbo 2.0 DOHC

Serious answers only please.

I'm currently looking to buy a turbo kit for my non turbo 4g63. how many pounds of boost (PSI) can I handle without removing my heads?

If you have any vids or links proving it can handle atleast 18 psi with out getting blown please do so!

hungry for 18-20 psi with stock internals if possible.

if not then how much can I handle psi wise?

1 Answer

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  • 1 decade ago
    Favorite Answer

    stock internals, 8 psi daily driven, and 10 psi on moderate use. If you want 18 psi you need a COMPLETE build, not just the head. You will need lower compression pistons, a sleeved block, turbo cams, a micropolished crank, stronger axles, better suspension, a good quality tire, the list just goes on. Also you need to figure out what turbo you are planning on using, there is a BIG difference in 18 psi on a 60 trim T3/T4 and 18 psi on a 80 trim T88.

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