home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > performance & modifications

Thread Tools Display Modes
Old 01-08-2021, 05:00 PM   #1
Jussi Alanko
Board Member
Join Date: Jun 2020
Location: Finland
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:


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.
Jussi Alanko is offline   Reply With Quote
Old 01-08-2021, 06:16 PM   #2
Harlard's Avatar
Join Date: May 2007
Location: PDX

Use a bigger gate for less boost, a smaller one for more. Go from there.

Herr Harlard am Erstens

1979 242 DL

Originally Posted by t8fanning View Post
My knob has a big chunk of steel on it
Harlard is offline   Reply With Quote
Old 01-10-2021, 09:20 AM   #3
WillettRun?'s Avatar
Join Date: Jan 2009
Location: Fate, Tx

I think it should be fine. You will have a high base boost though.
I still love Jesus and He still loves me.
MaxxECU Dealer/Tuner
WillettRun Automotive, LLC
WillettRun? is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -4. The time now is 06:47 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.