Valve Sizes - Classic versus New Age STi's
18 November 2003, 11:31 AM
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Paul, I was merely after a comparison between classics and new age cars, alegedly the new age AVCS head don't flow as well as the older ones, wondered if it was down to valve size???
Conrad
Conrad
18 November 2003, 11:37 AM
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I don't think the valve sizes have changed over the years, certainly not phase 1 to phase 2. Headflow in the phase 2 is a lot better stock though, and even modified the pahse 2 has the edge.
Paul
Paul
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18 November 2003, 08:33 PM
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AFAIK, all the valve sizes up to 2000, are EX32mm, IN36mm.
Be interesting to see if they've changed, but I doubt it.
Mark.
Be interesting to see if they've changed, but I doubt it.
Mark.
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