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Discussion Starter · #1 ·
hi, doin a full engine rebuild ( 2.5 dohc) , had crank reground , rebore .5mm, and heads resurfaced.
for some unknown reason i accidently ended up ordering C4264-051 cometic head gaskets , which are thicker than standard. would there be any problems using these ? its only a daily driver.


 

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2002 3.0 VDC Wag + 2018 2.5 Leg Ltd
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I would send the back, as they have viton black coating on them. = https://www.summitracing.com/parts/cgt-c4264-051

vs. bare mutlilayer steel. specifically these subaru ones made for the EJ255 turbo (I have this kind on my own EJ251 now)
https://www.amazon.com/Subaru-Gasket-04-06-Legacy-Forester/dp/B01ED8AZYU/

here is the description of similar MLS six star ones with black viton that leaked again. and were coming off for subaru bare MLS turbo ones.

http://www.subaruoutback.org/forums...ook-here/38604-hello-bangor-3.html#post608602


and here are the pics (reloaded pics, on the last post).

http://www.subaruoutback.org/forums/87-new-member-user-look-here/38604-hello-bangor.html#post5141033


@ntippet took the above pics which I have linked many times.
(this was his own car, he was a dealership mechanic at the time, and is a mechanical engineer now).
 

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27 Posts
Discussion Starter · #4 ·
I would send the back, as they have viton black coating on them. = https://www.summitracing.com/parts/cgt-c4264-051

vs. bare mutlilayer steel. specifically these subaru ones made for the EJ255 turbo (I have this kind on my own EJ251 now)
https://www.amazon.com/Subaru-Gasket-04-06-Legacy-Forester/dp/B01ED8AZYU/

here is the description of similar MLS six star ones with black viton that leaked again. and were coming off for subaru bare MLS turbo ones.

http://www.subaruoutback.org/forums...ook-here/38604-hello-bangor-3.html#post608602


and here are the pics (reloaded pics, on the last post).

http://www.subaruoutback.org/forums/87-new-member-user-look-here/38604-hello-bangor.html#post5141033


@ntippet took the above pics which I have linked many times.
(this was his own car, he was a dealership mechanic at the time, and is a mechanical engineer now).
wow , i`ve never , ever had any trouble with six star head gaskets , i only went to cometic cause it was quicker for me to buy them.

whats the matter with viton coating ?
 

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27 Posts
Discussion Starter · #5 ·
I would send the back, as they have viton black coating on them. = https://www.summitracing.com/parts/cgt-c4264-051

vs. bare mutlilayer steel. specifically these subaru ones made for the EJ255 turbo (I have this kind on my own EJ251 now)
https://www.amazon.com/Subaru-Gasket-04-06-Legacy-Forester/dp/B01ED8AZYU/

here is the description of similar MLS six star ones with black viton that leaked again. and were coming off for subaru bare MLS turbo ones.

http://www.subaruoutback.org/forums...ook-here/38604-hello-bangor-3.html#post608602


and here are the pics (reloaded pics, on the last post).

http://www.subaruoutback.org/forums/87-new-member-user-look-here/38604-hello-bangor.html#post5141033


@ntippet took the above pics which I have linked many times.
(this was his own car, he was a dealership mechanic at the time, and is a mechanical engineer now).
wow , i`ve never , ever had any trouble with six star head gaskets , i only went to cometic cause it was quicker for me to buy them.

whats the matter with viton coating ?
the coating is NOT permanent , once you assemble the head onto block , the viton coating will come off it places. i used six star hg , no trouble ( except for bearings...) and when i removed heads some of the viton coating stayed on the head and block.
 
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