Just slightly lower compression and an accompanying loss of a HP or 2.
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.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.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).