Single Turbo RX-7's Questions about all aspects of single turbo setups.

Wastegate piping size

Old 02-23-10, 04:47 PM
  #1  
Senior Member
10 Year Member
Thread Starter
 
Join Date: Feb 2006
Location: Canada,B.C
Posts: 385
Likes: 0
Received 0 Likes on 0 Posts
Wastegate piping size

I just dropped off my manifold to get the wastegate piping redone(creeping problems) and it has 1.5" pipe so would going to 1.75"pipe be enough or should i go to a 2" pipe?
666cody666 is offline  
Old 02-23-10, 04:51 PM
  #2  
Lives on the Forum
iTrader: (8)
 
thewird's Avatar
 
Join Date: Oct 2006
Location: Toronto, Canada
Posts: 6,586
Likes: 0
Received 1 Like on 1 Post
Should be the size of your wastegate.

thewird
thewird is offline  
Old 02-23-10, 04:56 PM
  #3  
Senior Member
10 Year Member
Thread Starter
 
Join Date: Feb 2006
Location: Canada,B.C
Posts: 385
Likes: 0
Received 0 Likes on 0 Posts
the wastegate is a tial 44mm so 44mm converts into 1.73 inch. am i in the ball park?
666cody666 is offline  
Old 02-23-10, 11:26 PM
  #4  
rotorhead
iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 15,630
Received 51 Likes on 51 Posts
yes it is 1.75" . I have that Tial wastegate.
arghx is offline  
Old 02-23-10, 11:44 PM
  #5  
Lives on the Forum
iTrader: (8)
 
thewird's Avatar
 
Join Date: Oct 2006
Location: Toronto, Canada
Posts: 6,586
Likes: 0
Received 1 Like on 1 Post
I would assume the piping should match the flange. If your still having creeping problems, you should check the way your wastegate is hooked up or you need a bigger wastegate.

thewird
thewird is offline  
Old 02-23-10, 11:52 PM
  #6  
mhhh
iTrader: (20)
 
limbar85's Avatar
 
Join Date: Oct 2004
Location: FL
Posts: 790
Likes: 0
Received 1 Like on 1 Post
I think the tial 44 inlet is 1.875" and outlet is 1.75"
limbar85 is offline  
Old 02-24-10, 11:01 AM
  #7  
Just in time to die
10 Year Member
iTrader: (1)
 
Zero R's Avatar
 
Join Date: Nov 2001
Location: look behind you
Posts: 4,143
Likes: 0
Received 1 Like on 1 Post
I run 2" on all our TiAL 44's you want 2" if possible.

~S~
Zero R is offline  
Old 02-24-10, 11:05 AM
  #8  
Lives on the Forum
iTrader: (8)
 
thewird's Avatar
 
Join Date: Oct 2006
Location: Toronto, Canada
Posts: 6,586
Likes: 0
Received 1 Like on 1 Post
Originally Posted by Zero R View Post
I run 2" on all our TiAL 44's you want 2" if possible.

~S~
Curious why you would want to run piping bigger then the flange diameter? Wouldn't it just cause a restriction by means of turbulence?

thewird
thewird is offline  
Old 03-04-10, 07:31 PM
  #9  
Senior Member
10 Year Member
Thread Starter
 
Join Date: Feb 2006
Location: Canada,B.C
Posts: 385
Likes: 0
Received 0 Likes on 0 Posts
old wastegate piping


New wastegate piping
666cody666 is offline  
Old 03-04-10, 07:50 PM
  #10  
Red Car, Blue Notes
iTrader: (1)
 
elwood's Avatar
 
Join Date: Mar 2003
Location: Lake Orion, MI
Posts: 1,461
Likes: 0
Received 2 Likes on 2 Posts
It's hard to tell from the picture of your new mani, but it looks like your exhaust stream must turn more than 90 deg to enter the wastegate circuit. This will cause restriction and is similar to running smaller tubing and/or a smaller wastegate. If you can correct this, your 44mm might be better able to control boost.
elwood is offline  
Old 03-04-10, 08:17 PM
  #11  
Senior Member
10 Year Member
Thread Starter
 
Join Date: Feb 2006
Location: Canada,B.C
Posts: 385
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by elwood View Post
It's hard to tell from the picture of your new mani, but it looks like your exhaust stream must turn more than 90 deg to enter the wastegate circuit. This will cause restriction and is similar to running smaller tubing and/or a smaller wastegate. If you can correct this, your 44mm might be better able to control boost.
well i went from 1.5 pipe to 1.75 and the hole on the old pipe for the flange was super small and now its alot bigger. it looks more then 90
666cody666 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SakeBomb Garage
Vendor Classifieds
6
08-09-18 05:54 PM
yetter227
2nd Generation Specific (1986-1992)
20
09-05-15 11:57 PM


Thread Tools
Search this Thread
Quick Reply: Wastegate piping size


Contact Us - Archive - 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.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: