Homemade wastegate pressure - HomemadeTurbo - DIY Turbo Forum

Go Back  HomemadeTurbo - DIY Turbo Forum > Homemadeturbo > Forced Induction
Homemade wastegate pressure >

Homemade wastegate pressure

Forced Induction Custom FI Setup Questions

Homemade wastegate pressure

Old 11-26-2018, 10:40 PM
  #1  
0.0 BAR
Thread Starter
 
Join Date: Oct 2018
Posts: 2
Default Homemade wastegate pressure

So I'm getting around to possibly using a Mitsubishi TE04H that I've had for years (I know it's not the best turbo but since I have it I'll try using it). I've never had the wastegate actuator so I kind of made my own with some allthread, a spring and some pieces I had laying around. I wanted to get an idea of how many pounds of boost the wastegate would open so I attached a 5 lb. bag of flour to the swing valve arm and adjusted the spring until it started opening. I marked it as a 5 psi setting and did the same for a 10 lb. weight. Would this be approximate to 5 (and 10) pounds of boost? Am I off base in these calculations? I've attached a photo to show what it looks like. Yeah, it's a bit trashy! As a side note, does anyone know the size of bolts or other hardware for this thing? My biggest question is on the 4 bolts that attach the swing valve housing to the turbo outlet.

greenkidd is offline  
Old 11-27-2018, 08:49 AM
  #2  
~ SITE SPONSOR ~
 
Join Date: Feb 2012
Posts: 390
Default

This is reacting to exhaust pressure and not intake pressure. A control like this is likely to provide less pressure than the point where it opens, and will also decrease boost with engine RPM (particularly if your muffler is restrictive).

I'd grab a junkyard actuator instead.
Matt Cramer is offline  
Old 11-28-2018, 10:07 PM
  #3  
0.0 BAR
Thread Starter
 
Join Date: Oct 2018
Posts: 2
Default

Gotcha Matt, thanks for the feedback. Hopefully my dad will want to make a run to Pick-n-Pull in the near future!
greenkidd is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Semnos
General Discussion
9
05-18-2018 12:55 AM
hamburgler
General Discussion
16
09-08-2008 12:45 AM
BRIOHATCH
Turbo Parts For Sale
0
10-23-2006 06:46 PM
kKdARIAN
Turbo Parts For Sale
6
05-23-2006 11:55 AM


Thread Tools
Search this Thread
Quick Reply: Homemade wastegate pressure


Contact Us Sitemap Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.