Vortech Supercharger wastegate idea - Club Lexus Forums

Go Back   > > > >
Log In 

Vortech Supercharger wastegate idea

Thread Tools Search this Thread
Old 06-21-14, 03:03 AM   #1
Lexus Test Driver
Thread Starter
iTrader: ( 3 )
Trader Score: (3)
KC95SC400's Avatar
Join Date: May 2007
Location: NC
Posts: 1,270
Default Vortech Supercharger wastegate idea

Somewhat built 1uzfe V8.

So I'm about to upgrade my little V-9 F trim with a V-2 Si trim. The V-2 moves way more air and is capable of 22 psi (get 12 psi out of the V-9 on a good day). I don't know that my motor is quite capable of holding 22psi.

Thread here : http://www.clublexus.com/forums/buil...ged-sc400.html

I've seen a few domestic guys (Mustang and Vette mostly) use a wastegate on the intake pipe. The purpose of this is to run the smallest pulley possible on the supercharger (based on supercharger and engine max RPM) so that boost is at max desired boost as low in the RPM range as possible but then have the capability to release excess pressure.

Say I want to run 15 psi. I have a 2.62 pulley which will put the V-2 at near peak RPM at my set peak engine RPM of 6800. Lets say it will make 15psi at 4000 rpm and get up to the max 22 psi by 6800 rpm. I will then have the wastegate set to open at 15psi to "vent" the excess pressure.

I also think I can use the wastegate as a bypass / blow off valve as it is a two port wastegate with one port on each side of the diaphragm.

I'm not sure if I will need a way to vent vac / boost in the lines between the VSV / one way check valve and the wastegate. If the boost or vac lines hold vac / boost it might make the valve harder to open / close. will need to do some bench testing.

Attached is a diagram, I'd love some input as I have no experience with wastegates,

Attached Files
File Type: pdf Book1.pdf (176.7 KB, 87 views)
KC95SC400 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
99 SC300 daily beater 11 second street tire build. 93twintrbo Build Threads 71 05-04-16 08:14 PM
VA FS: MAPECU-3 w/ Boost Solenoid 99 GS3 SC400 / 300 Classifieds 3 07-05-15 04:44 PM
Time to get serious (supercharged SC400) KC95SC400 Build Threads 24 03-04-15 11:40 AM
ECU and Tuning Question Aswilley Performance & Maintenance 2 06-06-14 03:39 PM
sc400 boosted and over boosting issues kolessc400 Performance & Maintenance 10 06-01-14 01:36 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 01:54 PM.

Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved