Go Back  RX7Club.com - Mazda RX7 Forum > Tech and Performance > Single Turbo RX-7's
Reload this Page >

How to fix a leaking downpipe to turbo V-Band Connector

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

How to fix a leaking downpipe to turbo V-Band Connector

Old 05-16-07, 02:02 PM
Rotary Enthusiast
10 Year Member
Thread Starter
John Magnuson's Avatar
Join Date: Dec 2002
Location: San Diego, CA
Posts: 1,147
Likes: 0
Liked 0 Times in 0 Posts
How to fix a leaking downpipe to turbo V-Band Connector

I recently installed a single turbo conversion kit on my 1993 Mazda RX-7. Unfortunately I can't get the downpipe to turbo connection to seal with the provided V-Band clamp. The downpipe was poor fitting and I had to have a an exhaust shop modify it so that it would fit flush. I even tried making a copper gasket. No luck - still an exhaust leak.

Any advice?
John Magnuson is offline  
Old 05-16-07, 02:18 PM
Registered User
Join Date: Dec 2001
Location: Chicago
Posts: 428
Likes: 0
Liked 0 Times in 0 Posts
Connect your downpipe to the turbine housing but leave the connection somewhat loose. Then connect the downpipe to the midpipe, also leaving that connection loose. At this point you should be able to tighten the downpipe to turbine housing connection so that it seals properly being that there is some movement in the system from the loose connections. At last, tighten your midpipe connection and all should be good

If you are running a re-routed downpipe, follow the same procedure but install the wastegate prior to tightening the system. You will need some movement from the downpipe, therefore leave it as loose as possible w/o it falling off. Tighten the wastegate to the manifold and downpipe, then tighten the rest of the system as described above.
A-Spec Tuning is offline  
Old 05-16-07, 04:26 PM
Full Member
5 Year Member
T2GTUS's Avatar
Join Date: Aug 2005
Location: LA, CA
Posts: 179
Likes: 0
Liked 0 Times in 0 Posts
fwiw ... v-band gaskets are around you can try those, but I have also seen some V-band clamps that are wider or narrower than others ...
T2GTUS is offline  
Old 05-16-07, 07:57 PM
Front Range Express
10 Year Member
Old Slow Coach's Avatar
Join Date: Jul 2004
Location: Colorado Springs
Posts: 571
Likes: 0
Liked 0 Times in 0 Posts
Old Slow Coach is offline  
Related Topics
Thread Starter
Last Post
2nd Generation Specific (1986-1992)
09-16-18 12:32 PM
2nd Generation Specific (1986-1992)
03-29-18 02:05 PM
3rd Generation Specific (1993-2002)
08-16-15 05:41 PM

Thread Tools
Search this Thread
Quick Reply: How to fix a leaking downpipe to turbo V-Band Connector

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:
Your question will be posted in: