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Old 12-22-2012, 08:12 PM   #1
rolzrex
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Default 2000 Forester head gasket question..

Hey guys, I just picked up a 2000 Forester as my daily driver and it needs a head gasket replacement. Ive been doing some research and ive found that the oem 633 gasket that subaru replaces sohc 2.5l motors with is a single layered steel gasket. The new 04+ turbo suby 642 gaskets are multi-layered and close to the same thickness as the 633 gasket. It seems to me that a multi-layered gasket like the 642 is a far superior design and will seal better and last longer than the single peice of steel 633 gasket. Anyone use these gaskets in place of the 633's on sohc 2.5l motors?
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Old 12-24-2012, 08:39 PM   #2
rolzrex
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Anyone?
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Old 12-25-2012, 06:24 AM   #3
redblack
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Ive used the 642 gasket on my 05 sohc and it works. The 642 gasket is thinner than the 633 but its still thick enough that there is no valve to piston contact.
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Old 12-27-2012, 02:49 PM   #4
akfmx
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Is the 642 the OEM ej257 gasket? If so, that is what I used on my 2000 forester ej251 SOHC earlier this year and so far seems to be holding up great. I read a lot about it, and everyone seemed to agree that it was way better than the 633, which should be avoided if at all possible.
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Old 12-27-2012, 06:02 PM   #5
rolzrex
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good to hear, thats what ive been reading alot as well. I went ahead and ordered the 642 gaskets so hopefully they live up to their reputation!
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