Recycled exhaust manifold - Page 4 - Miata Turbo Forum - Boost cars, acquire cats.

DIY Turbo Discussion greddy on a 1.8? homebrew kit?
Sponsored by:
Sponsored by:

Recycled exhaust manifold

Old 06-08-2012, 04:54 PM
  #61  
Junior Member
 
Join Date: Mar 2009
Location: Venice, FL
Posts: 173
Total Cats: 9
Default

Is that...are those really...
Orion ZyGarian is offline  
Old 06-09-2012, 04:24 AM
  #62  
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 9,305
Total Cats: 779
Default

Originally Posted by sturovo View Post
Sounds like me!
When you're working on your own exhaust you'll care more than when you're on the clock at a job that pays you minimum wage. You'll make sure joints are straight, and everything is smooth as possible while him.. he just has to make it work.

Your manifold is a perfect example.
triple88a is offline  
Old 06-12-2012, 05:23 PM
  #63  
Senior Member
Thread Starter
 
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 508
Total Cats: 71
Default

Originally Posted by pusha View Post
lol bro you don't like revving at ladies?
got the pusha inspired Lady revving relay!
Attached Thumbnails Recycled exhaust manifold-ladyrevingrelay.jpg  
sturovo is offline  
Old 06-20-2012, 05:27 PM
  #64  
Senior Member
Thread Starter
 
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 508
Total Cats: 71
Default

Originally Posted by triple88a View Post
As far as the cutout being right after the turbo.... what are you planning on doing with the wideband then?


I found some 70 x 1.5 mm ss elbows and pipe so I can start to fab the cutout/downpipe.

As pointed out where to put the wideband?

Will there be enough flow through the stock exhaust when the cutout is open to give a true reading on the wideband?
If yes then I could place the wideband somewhere close to the stock cat.

Who knows, there could even be reverse flow through the stock exhaust due to venturi vacuum effect when the cut out is open? Probably not though if the cut out pipe is long enough to create some back pressure.

The wideband could be placed at the y which is not ideal as WB should be a min of 12 inches and not exposed to more than 900 deg F?

For now I guess I will add 4 bungs, 2 at the y, 1 before the cat and 1 at towards the end of the cutout and push the engineering burden onto the guy testing it....
Attached Thumbnails Recycled exhaust manifold-p1020929.jpg   Recycled exhaust manifold-p1020930.jpg  
sturovo is offline  
Old 06-20-2012, 06:06 PM
  #65  
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 9,305
Total Cats: 779
Default

Wasn't there a thread few months ago with clean air going back and influencing the wideband reading? I hope that doesnt happen for you.
triple88a is offline  
Old 06-20-2012, 09:36 PM
  #66  
Junior Member
 
Join Date: Mar 2009
Location: Venice, FL
Posts: 173
Total Cats: 9
Default

Yeah I dont think that would be the most ideal setup. Youre going to want it further down from the turbo IMO, or at least weld in a heat shield. I'm not sure how well they work, but I've seen setups that have a curved chunk of metal, maybe 5/32" or more, welded right in front of the O2 sensor.

I really think the best idea would probably have it at the elbow where the downpipe curves to go to the back of the car. Just have the cutout continue the downpipe's path
Orion ZyGarian is offline  
Old 06-20-2012, 09:43 PM
  #67  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,078
Total Cats: 3,113
Default

that looks like a horrible downpipe design if you go through with it. I hope you come up with something better otherwise just stick to the "traditional" routing
18psi is offline  
Old 06-21-2012, 01:58 AM
  #68  
Senior Member
Thread Starter
 
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 508
Total Cats: 71
Default

Originally Posted by 18psi View Post
that looks like a horrible downpipe design if you go through with it. I hope you come up with something better otherwise just stick to the "traditional" routing

what is the traditional routing when a cut out is placed between the turbo outlet and stock downpipe connection?
sturovo is offline  
Old 06-21-2012, 03:49 AM
  #69  
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 9,305
Total Cats: 779
Default

Cutout is placed right before the cat..or where the cat would be, wideband goes about a foot before that.
triple88a is offline  
Old 12-16-2012, 01:08 AM
  #70  
Junior Member
 
Join Date: Nov 2012
Posts: 61
Total Cats: -2
Default

is there enough space under there to fit the turbo? it seems like it'd be awkward like that because it's so low to the ground.
firefaux is offline  
Old 12-16-2012, 04:47 AM
  #71  
Senior Member
Thread Starter
 
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 508
Total Cats: 71
Default

Originally Posted by firefaux View Post
is there enough space under there to fit the turbo? it seems like it'd be awkward like that because it's so low to the ground.
Good question!

The turbo flange sits 3.75" bellow the manifold center line which is similar to other low mount setups. Available Products

From my measurements the turbo flange could be 6" and more bellow center and still be OK for drain line routing. I will fit this soon and post pictures.
sturovo is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
63
08-09-2018 07:54 PM
Corky Bell
Prefabbed Turbo Kits
18
11-22-2016 10:01 PM
Aroundcorner
Miata parts for sale/trade
2
10-01-2015 04:20 PM
cale saurage
DIY Turbo Discussion
16
10-01-2015 12:25 PM


Thread Tools
Search this Thread
Quick Reply: Recycled exhaust manifold


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 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.