Head gasket curiousity

[spyderdrifter]

So I was looking at parts a few minutes ago, just putting together a mental list and was looking at head gasket options and was wondering, what kind of damage, or power loss would result from a block bore increase to .020 or .040 over, while using a standard bore head gasket? Last year, the eclipse I had, got a bore of .020 over, but I honestly can't remember if I bought the appropriate head gasket. I'd like to believe I did, but who knows now. Would like info for a reference point. Thanks....

 

[96' Eclipse GS]

im pretty sure the stock head gasket is good up to a .040" overbore on the 4g63. But please correct me, if I am incorrect. If you still want to be save, then get a H-G that is the correct size for insurance.

STM: COMETIC HEAD GASKET | 90-99 DSM | 4G63

 

[BogusSVO]

Most HG bores that I have measured, Mitsu MLS, Fel-Pro composite, and Evergreen composite will take a .040 bore and be just fine.

 

[96' Eclipse GS]

Most HG bores that I have measured, Mitsu MLS, Fel-Pro composite, and Evergreen composite will take a .040 bore and be just fine.

Question Answered. Thank you.

 

[spyderdrifter]

Sounds good to me, good info to know. Thanks.

 

[schalk35]

This is good news to me also, thanks for the info fellas

 

[Mitsubishiown]

Just curious now. I just bought a used head for the 4g63T 2nd gen and I am looking to make between 400-500whp I was wondering what work I should get done to the head along with what kind of head gasket?

 

[spyderdrifter]

I've seen everyone speak highly of Cometic head gaskets. Other than that, upgrade the valvetrain and cams.