Thread: H6 3.0 turbo?
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Old 09-08-2001, 08:56 PM   #3
Scooby Newbie
Member#: 1597
Join Date: Jun 2000
Location: Allentown, PA
2005 Legacy GT
Atlantic Blue


Among other things, you'd probably have to get other pistons or lower the compression in some other way. I believe the stock compression on the H6 is 10.7:1, making it less than optimal for turbocharging. Unfortunately, the pistons for the H6 are a different bore than the WRX pistons (you might think that the H6-3.0 is an H4-2.0 with 2 extra pistons, but alas, it doesn't work that way). Also, the block is sort of compressed, as it's only a bit longer than the EJ25 block; I don't know how much structure has been sacrificed for the sake of compactness there. Finally, I've never seen one of these engines in a car, and I don't know how much room there is to plumb the piping and other turbo necessities. Those are a few of the issues you'd have to resolve in such a project. But if you pull it off, save all your notes and secrets, 'cuz I want one.

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