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-   -   HEad Gaksets (https://www.scoobynet.com/general-technical-10/740949-head-gaksets.html)

shogo10 24 January 2009 11:28 AM
HEad Gaksets
 
Are all subaru classic head gaskets the steel type and do they vary in thickness throughout the years and various versions?

merlin24 24 January 2009 03:41 PM
The Multi Layer Steel (MLS) head gaskets were used on the Version 3+4 STi engines and are 1.60mm thick.
Composite Gaskets were used on Version 1 ~ 4 WRX.
Version 5 onwards STi and WRX use MLS gaskets and are 0.90mm thick IIRC.

Mick

joz8968 24 January 2009 04:07 PM
Originally Posted by merlin24 (Post 8451659)
The Multi Layer Steel (MLS) head gaskets were used on the Version 3+4 STi engines and are 1.60mm thick.
Composite Gaskets were used on Version 1 ~ 4 WRX.
Version 5 onwards STi and WRX use MLS gaskets and are 0.90mm thick IIRC.

Mick
Merlin, according to RCM's site the MY99/00 ones are 0.6mm thick.

So OEM gaskets are...

MY93-96 - 1.6mm fibre composite
MY97/98 - 1.6mmm MLS

MY99/00 - 0.6mm MLS

But you can upgrade your MY96's fibre gaskets to the MY97/98 MLS ones, which are stronger.


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