Mocking up exhaust manifold - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

DIY Turbo Discussion greddy on a 1.8? homebrew kit?

LinkBack Thread Tools
Old 08-09-2013, 07:14 PM   #1
Elite Member
Thread Starter
iTrader: (6)
Join Date: Sep 2007
Location: CA
Posts: 1,990
Total Cats: 9
Default Mocking up exhaust manifold

I'd like to make a turbo exhaust manifold. I know FM uses those fancy blue lego tubes to mock them up, but is there anything the lay man can use to physically mock them up? I'd really like to just get the angle cuts right at the collector. I was thinking the paper towel roll inner cardboard tube for the straight pieces, but they don't have them with 90*.

Any ideas for a beginner?
kenzo42 is offline   Reply With Quote
Old 08-09-2013, 08:14 PM   #2
Elite Member
iTrader: (2)
triple88a's Avatar
Join Date: Apr 2006
Location: Chicago, IL
Posts: 9,133
Total Cats: 598

Plastic water pipes and glue?
triple88a is offline   Reply With Quote
Old 08-09-2013, 09:31 PM   #3
Senior Member
iTrader: (1)
Onyxyth's Avatar
Join Date: May 2013
Location: Boyertown, PA
Posts: 719
Total Cats: 55

A tubular or log manifold?
Many people just use steam pipe for log manifolds, as seen in this thread:
Onyxyth is offline   Reply With Quote
Old 08-09-2013, 09:49 PM   #4
Senior Member
iTrader: (1)
Join Date: Sep 2008
Location: Tucson, Arizona
Posts: 889
Total Cats: 55

steam pipes if you're not amurican. We use weld els here in the states.
krissetsfire is offline   Reply With Quote
Old 08-12-2013, 06:50 PM   #5
Elite Member
iTrader: (1)
Leafy's Avatar
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90

Originally Posted by krissetsfire View Post
steam pipes if you're not amurican. We use weld els here in the states.
Arent those the same thing? Either way how I did mine and how I'd do it again is this. I put the turbo in the engine bay where I wanted it and measured where it was based off one of the exhaust manifold studs. I placed the head flange and the turbo flange in the computer model based on these locations. ANd then I designed the tubes to work. I might have a tube or two really close to the valve cover so I measure based on known points. I did cheat and buy a collector because I knew I would never be able to make a nice one and its the most important part anyways. I was also going to make my collector a certain angle no matter what the pipes wanted since the collector is more important than the pipes anyways. When I went to make it I took some angle steel and placed both flanges where they needed to be bolted the turbo on and made sure I still cleared everything. Then tacked all the weld els together, and put it back in the car with the turbo attached to make sure I didnt **** up. Its pretty easy.
Leafy is offline   Reply With Quote
Old 08-12-2013, 09:00 PM   #6
Elite Member
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,640
Total Cats: 25

They are the same thing, Industry calls them weld els, the places the get welded are typically powerstations, so are known as steam pipe.

nitrodann is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 18 11-22-2016 10:01 PM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM
ISO 1.6 turbo cast iron manifold cale saurage DIY Turbo Discussion 16 10-01-2015 12:25 PM

Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 05:47 PM.