40mm wastegate too big? - Miata Turbo Forum -Boost cars, acquire cats.

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Old 11-18-2006, 07:30 PM   #1
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Default 40mm wastegate too big?

I was looking at using a 38mm wastegate for my diy project. My car is an 04 with the 10:1 compressions I would be running max 9psi with a mitsu 16g turbo.

A member of my local miata club is selling a used tial 40mm unit, could I use this for my application or is it better suited for a much higher hp/flow applications?

IM thinking if the wastegate is over sized you wouldnt get good control on the boost.
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Old 11-18-2006, 08:21 PM   #2
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2mm wont matter, it would be fine.
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Old 11-18-2006, 09:27 PM   #3
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If it's cheap I'd jump all over it. If its not, just get a 38mm. There won't be any problem with using it though.
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