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Old 03-20-2003, 05:03 PM   #1
ciper
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Default 98 2.5rs MAF based?

Does the 1998 2.5RS have a MAF sensor in the intake tract?
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Old 03-20-2003, 05:16 PM   #2
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yes , 98 and 99 are MAF

Jay
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Old 03-20-2003, 05:17 PM   #3
ciper
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Cool. Are these the engines with higher than normal headgasket failure? Do they require 87 octane?
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Old 03-20-2003, 05:44 PM   #4
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your DOHC engines are the ones that have a head gasket issue...

this would be 98's and some 99's...

Jamie www.subiegalracing.com
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Old 03-20-2003, 06:16 PM   #5
ciper
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Dangit. A searching I will go

By chance has a fix been found? Perhaps metal bead HG and head studs instead of bolts?
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Old 03-20-2003, 06:42 PM   #6
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IIRC, there is a service bulliten on the bad head gaskets, im sure they improved the gaskets.

Jay
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Old 03-20-2003, 07:08 PM   #7
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Yes, if yours has failed, Subaru has heavy duty gaskets. You can do it yourself or have the stealership do it for ya. It depends on how dirty you'd like to get. Course, I haven't done it (yet) so I don't know how much of a pain it can be.
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Old 03-20-2003, 08:00 PM   #8
ciper
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Hmm, Ive had plenty of past experience with "upgraded" Oem gaskets so that is not something I would trust.

So nobody is using an aftermarket gasket?!

My past experience was with Toyota Supras. The HG failure was extremely common, almost guaranteed failure before 100k on every vehicle.

The fix became installation of HKS (other brands too) metal HG and Arp studs or bolts. Toyota redesigned the gasket a couple times. Just search for Supra and BHG and you will see what I mean
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Old 03-21-2003, 11:28 AM   #9
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I believe Rallispec was able to source copper hgs for the DOHC engines. You should get in touch with them. Gonna have to find a place to o-ring the block, though.
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