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Old 05-29-2010, 07:56 PM   #1
Loafer987
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Join Date: Mar 2006
Location: Vernon B.C. Canada
Posts: 89
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Thumbs up H22A max throttle body?

I am wanting to replace my throttle body on my N/A H23A vtec swap. I have an H22A upper half of the intake manifold with the H23A vtec 65 mm throttle body (so just think of this as an H22A).
My question being. What is the largest aftermarket throttle body I can port match my intake manifold to? I am hopeing I can go 70mm... but if someone has done this please let me know!
Thanks!
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Old 05-31-2010, 07:38 PM   #2
nusdogg
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Join Date: Apr 2008
Location: St. Paul, MN
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Well, I think the biggest you can do is 70mm TB. I'm running a Skunk2 68mm TB with my upper plenum portmatched to 69mm and with a 69mm custom thermal TB gasket. All work and TB gasket are done by Roskoracing.com.
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