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#1 | |
Scooby Newbie
Member#: 442121
Join Date: Mar 2016
Location: High Point, NC
Vehicle:1999 Impreza Outback Red |
![]() I have one of the rare 2.2 with blown head gasket. Fel-pro blue mls failed after 35k. So it’s back out. I had a set of sti gaskets (11044aa642) and everything lined up. Simple google search gave me this:
https://forums.nasioc.com/forums/showthread.php?t=1713699 Quote:
So did Subaru add some thickness to the sti (642) over the last decade or was the above DOHC turbo a wrx only measurement (641 @ .58mm)? Also, will I have any valve interference or tensioner problems if my guage was wrong and the 642 was actually 0.58mm when it needs 0.8mm (or more for the .001” I shaved off)?
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#2 |
Scooby Newbie
Member#: 442121
Join Date: Mar 2016
Location: High Point, NC
Vehicle:1999 Impreza Outback Red |
![]() I ended up at Subaru and purchased a set of 633’s. These are for the 2.5. Just wanted to add info for posterity. They are single layer @ .8mm
Compare this to the 642 which is mls (three layers) @ .8mm also. |
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#3 |
Scooby Guru
Member#: 30669
Join Date: Dec 2002
Chapter/Region:
Tri-State
Location: USA, North NJ, 07456
Vehicle:1998 Legacy 2.5GT Silver Sleeper BK, 5MT |
![]() Thanks for the info.
Do you have an Outback (guessing no, thought 99 was 2.5L) or OBS (Outback Sport, Impreza based, NOT Legacy based)? We owned (from new) a Impreza L wagon, 2.2..... yes, we lost a HG. Myself and others didn't believe it either. I tend to just use the current USDM dealer HG, I shy away from aftermarket on some cars, like Subaru. Not saying others are bad, just saying what I do. I would "prefer" the correct current HG PN for the VIN assuming the engine is original. Will yours work? Maybe. Assume ALL Subaru engines are interference. There are ways to check, but I err on the side of caution, even though I do a lot of my own work. |
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#4 | |
Scooby Newbie
Member#: 540036
Join Date: Jan 2025
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![]() Quote:
I saw this post and have a question for anyone where who may have the relevant experience. I own a Subaru forester usdm ej2.5 l I swapped to a jdm ej20 and blew head gaskets on the jdm ej20 I am trying to verify whether gaskets mentioned above 110044AA483 will fit this engine I have been told that gaskets for the ej205 02-05 wrx are what fits this? Anyone have any relevant experience with this as I would like to ensure I have the right gaskets for this jdm ej20 motor |
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