R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > Engine & Drivetrain > Forced Induction

Thread Tools Search this Thread
Old 02-07-2019, 06:12 AM   #1
E30 Addict
Join Date: Sep 2016
Location: FL
Posts: 577
Advice on wastegate piping?

Hey everyone, I am trying to finish up my down pipe setup so that i can start working on the rest of the exhaust (center exit coming ). I have an m52b28 swapped in with a rapidspool/good n' tight manifold. I have my downpipe fabbed up, and the clearance between the downpipe, head, and body of the car is all pretty good.

My big question is, is it ok to have the wastegate dump directly into the downpipe. The way the spacing works out, the wastegate lines up perfectly with the downpipe and has maybe an inch of piping needed between.

Is there are reason I shouldn't do this? Are there advantages to having the wastegate piping longer?
haaken675 is offline   Reply With Quote
Old 02-07-2019, 11:17 AM   #2
E30 Addict
pazi88's Avatar
Join Date: Sep 2015
Location: Finland
Posts: 521
It's basically fine like that. But to prevent cracking you would need flex piece between the wastegate dump and downpipe. And also it would be better to aim to the flow direction.
pazi88 is offline   Reply With Quote
Old 02-07-2019, 12:29 PM   #3
E30 Addict
Join Date: Sep 2016
Location: FL
Posts: 577
I would love to have a flex pipe in between, but there definitely isn't enough space that way. I will see how my clearance is looking as I rotate the wastegate around. I finally put the car back on jack stands last night so I can work on this.
haaken675 is offline   Reply With Quote
Old 02-13-2019, 07:18 PM   #4
E30 Enthusiast
Join Date: Apr 2016
Location: Australia
Posts: 1,197
can you rotate that waste gate and have it enter the dump pipe after the next bend? or on the end of the next bend?

Bit hard to see with those photos but can you spin the wastegate ~30degrees to the left, put a 90deg onto the wastegate and then bring it down parellel with the main dump.

entering at 90 degress is certainly not ideal for flow. But would it make a seat of the paints difference, not sure. probably not.
e30davie is offline   Reply With Quote

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

Forum Jump

All times are GMT -7. The time now is 02:14 AM.

Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC