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single head exhaust headers
Posted 17 January 2010 - 10:34 AM
Posted 17 January 2010 - 01:57 PM
All EJ25's and EJ18's in 1996 will be dual port heads (and therefore the dual port set up exhaust I think you're asking about).
A 1996 EJ22 will be single port. So I think you're talking about EJ22 stuff - 1996 2.2 liter engines available in Impreza's, Legacy's, and manual trans OBW's.
Posted 17 January 2010 - 02:12 PM
Just checked another source and it calls for the same manifold gasket for 95-97 Legacy at 1st Subaru parts. They do show the same front pipe for the 96-01 Impreza though. I will have to do a bit more checking to verify this. Not sure why they would use two different heads in the same year on two different models.
Edited by Qman, 17 January 2010 - 02:18 PM.
Posted 17 January 2010 - 02:19 PM
That's a good point - 97 would be the only "full year" that i would trust if it mattered. Single port started in 96, but I doubt all 96's are singles.
I am pretty certain that the 97 and later heads were single port exhaust.
Did all the changes happen at the same time - timing tensioner, interference, single port? I was under the impression that single port heads did not necessarily mean interference engine.
Posted 17 January 2010 - 02:23 PM
Posted 17 January 2010 - 02:31 PM
Posted 22 January 2010 - 05:53 PM
Posted 22 January 2010 - 07:48 PM
Posted 23 January 2010 - 08:27 PM
Posted 24 January 2010 - 11:45 AM
Not sure why they would use two different heads in the same year on two different models.
Some models built here in Indiana, some built in Gunma Japan.
For instance, My moms old 96 OBW, had a single port....Indiana built.
My friends (4Tes) 97 Legacy Brighton, has a dual port......Japan built.
IMO, the Single Port 2.2 has slightly more torque....and Roller Cam rockers
Posted 24 January 2010 - 01:50 PM
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