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exhaust pattern difference between 12a and 13b?

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Old Sep 12, 2008 | 08:36 PM
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weirRacing's Avatar
weirRacing
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weiRtech
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From: Ontario, Canada
exhaust pattern difference between 12a and 13b?
i know the bolt pattern is essentially the same, but aren't the exhaust ports closer together on the 12a than the 13b? can someone clarify?

thanks.
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Old Sep 13, 2008 | 02:33 PM
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Turbo II Rotor's Avatar
Turbo II Rotor
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From: Aurora, CO
The 12a housings are 10mm narrower than the 13b housings. That means the exhaust ports are closer and the exhaust bolts are 5mm closer to center on each side.
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