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01 Faded Silver Forester
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Discussion Starter #1
This seems to be the most appropriate place I can find to ask this, so here goes.

Does anybody know the compressed thickness of the fel-pro mls head gaskets for the sohc engines(I have an ej251 in my 01 Forester)? On the package it says something about measuring the gaskets you remove to see if they're around .026" stating that's about what they should be, but I was under the impression the OEM gaskets are .040" thick.

I'm getting custom pistons that are 10.5:1, but was assuming the replacement gaskets are .040, so now I'm thinking of just getting Cometics so that I know the thickness. Probably better than running the fel-pros anyway.
 

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'00 2.5rs coupe
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1,628 Posts
SOHC uses a .026" gasket, DOHC uses a .053" gasket as the pistons actually come out of the block at the end of their stroke.

The .040 is (I believe) the STI headgasket thickness.
 

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01 Faded Silver Forester
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7 Posts
Discussion Starter #3
Interesting. A majority of the info I could find stated that sti is .021", SOHC is .040", and DOHC is .053", with the piston popping out of the block like you said.

Well Im going with the .040" Cometic gaskets, might be overkill for an NA build, but I kinda like overkill. Thanks Torque
 
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