Does anyone know the thickness of the headgaskets on a 1997 WRX Import? Think mine has started to go
Seen 0.55mm and 1.6mm.

 

Anyone?

 

Impossible to say beforehand mate, as maybe the block and/or heads need decking.
This will affect the gasket you would need to use.
Just mounting another stock thickness gasket (the thickness of which i do not know, sorry)without at least having a look at the heads and deck (see if they are still plane/true is throwing money away tbh, as HG problems will almost surely return.

 

They have graphite composite gaskets fitted to the 1997 WRX and are 1.48mm compressed thickness IIRC.
A good upgrade for the composite gaskets are the STi Version 3~4 MLS head gaskets (11044AA463) which are 1.60mm thick and are more durable than the composite gaskets,assuming standard deck height and combustion chamber vols on your engine.

Mick

 

yes around 1.5ish mate.

 

As DSL says above, the different thicknesses are to make allowances for having had the heads/blocks skimmed and to therefore keep the compression ratio the same.

 

So i need to get the heads off and check 1st then before i buy the gaskets?
Soory for my ignorance.

 

LOL, we all have to learn at some time.

Have a guess how I found out?

Yep, the hard way