Thicker Headgasket for NA to Turbo?

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douglas vincent
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Thicker Headgasket for NA to Turbo?

Post by douglas vincent »

Or should I say supercharger?

Can I order a thicker copper headgasket that reduces my compression ratio to 8-1 or so, instead of purchasing turbo pistons? Yes I know this is that wussy stupid way out, but would it work? and is it possible? I know I can get custom copper headgaskets, and I believe the stock pistons would hold up if treated right (unlike how I previously treated them).

Worst case scenario, I spend the $1000 and get the whole shebang from
http://www.importperformanceparts.net/i ... ubaru.html

and hope the are on the up and up.
Reddevil, Awaiting new heart, will it ever happen?
1990 wagon, EJ25 12.3 @ 116.5 FAST Family wagon getting new motor soon
1992 wagon, wifes daily, high compression
1992 Touring wagon, should I keep it?
evolutionmovement
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Post by evolutionmovement »

For a grand you could get a turbo engine. I do remember seeing thicker HGs somewhere, but bringing 9.5 down to 8.0 might require something excessive.

Steve
Midnight in a Perfect World on Amazon or order anywhere. The first book in a quartet chronicling the rise of a man from angry criminal to philanthropist. Midnight... is a distopic noirish novel featuring 'Duchess', a modified 1990 Subaru Legacy wagon.
vrg3
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Post by vrg3 »

Apparently some old Saab turbos used head gaskets to control compression ratio. The turbo models had thicker gaskets than the non-turbo models. The standard procedure when doing a head gasket job on the non-turbos was to mill the head flat again and then use a turbo gasket to maintain the proper compression ratio.
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Legacy777
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Post by Legacy777 »

don't go copper headgaskets.....you'll have nothing but problems.
Josh

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