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Old 01-08-2021, 05:00 PM   #1
Jussi Alanko
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Default Tial MV-S 38mm Wastegate?

I have a china made 50mm wastegate now, it's 50mm, but i'm thinking to update this piece of crap to something more serious.

I have a good price at Tial's MV-S 38mm wastegate in Finland at Kkd-motorsport, there Tial 38mm wastegate only costs about 300€.

But is it large enough to my combination, i have a exhaust manifold like this:

[IMG][/IMG]

It have a 40mm tube which leads to waste gate, i split the wastegate tube to two halfs, so then twin scroll manifold works at it's best.

But is 38mm wastegate big enough to my combination which contains: b21 block bored and honed, new pistons, ported 530 head which flows about 210-220 cfm, then i have a 278 at 0.050 and 12mm camshaft, Holset hx40 super with 18# exhaust housing, i'm planning to drive it about 24 psi of boost with 98e ron gasoline and a water-meth injection to increase octane rating.
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Old 01-08-2021, 06:16 PM   #2
Harlard
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Use a bigger gate for less boost, a smaller one for more. Go from there.
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Quote:
Originally Posted by t8fanning View Post
My knob has a big chunk of steel on it
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Old 01-10-2021, 09:20 AM   #3
DNAsEqUeNcE
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I think it should be fine. You will have a high base boost though.
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