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Old 05-24-2004, 10:43 AM   #1
jlevy
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Default History lesson please - why the different length exhaust ports?

It seems like exhaust port flow would definitely be more consistent and probably better overall.

-JL
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Old 05-24-2004, 11:39 AM   #2
Unabomber
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I don't think you will get the "correct answer" here. Since the WRX has a turbo, the easiest way to do it was to chose one side or the other for turbo placement. Since it goes to one side, you have an unequal length exhaust manifold. I am guessing that making an equal length cast iron (material of choice) exhaust manifold would either be too costly or is not practical for whatever reason. Proof of this theory may be that there are no cast iron equal length headers for our cars. Equal length is better for N/A cars, but isn't that big of a deal on a turbo vehicle from my research.

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Old 05-24-2004, 12:25 PM   #3
jlevy
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I'm actually curious about the head design itself, with the short port and long port. My initial post was a little vague, sorry about that.

-JL
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