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Re: best head gasket for 91 tsi
No one will ever agree on what head gasket to use.
Cometic = High High Boost applications (28plus PSI, ONLY if block and head are both properly machined)
SCE ICS = High High Boost applications (28plus PSI, can be used on non true surfaces, but not recommended)
OE Mitsu = Any regular old DSM (up to 25psi on anything up to a 50trim)
While I haven't seen much about the SCE ICS headgasket, I know that copper is a FANTASTIC material for a head gasket, and I see it possibly making cometics go obsolete. The fact that it has a built in steel ring that acts a tiny bit like an O-Ring I find sweet. Downside is if the head starts lifting (fucking cylinder pressure!) you can start to ruin things. Same goes with any other gasket though.
Thats my .02
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420A > LS1 > All Else
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I > All else
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