1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

12a header that stay closest to block?

Thread Tools
 
Search this Thread
 
Old 04-14-09, 12:43 AM
  #1  
Junior Member

Thread Starter
 
pac11adp's Avatar
 
Join Date: Mar 2009
Location: Powell River
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
12a header that stay closest to block?

I wanted to keep the exhaust manifold for this engine swap that I'm doing but it sticks out way too far from the block. Does anyone know of a header that makes the bend pretty sharp or am I going to have to make one?
Old 04-14-09, 12:45 AM
  #2  
Stu-Tron Get Yo Groove On

iTrader: (4)
 
Jeezus's Avatar
 
Join Date: Nov 2006
Location: Huntsville AL
Posts: 8,405
Received 9 Likes on 9 Posts
You might have to make one. Sharpest I have seen is the RB setup, streetable. Not sure the the streetable and streetport setup are the same.

Why would you want to make it have a sharp turn? Not too good for ezhaust flow to have a 90* bend right out of the housing, like the RX8.
Old 04-14-09, 01:18 AM
  #3  
Junior Member

Thread Starter
 
pac11adp's Avatar
 
Join Date: Mar 2009
Location: Powell River
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Jeezus
Why would you want to make it have a sharp turn? Not too good for ezhaust flow to have a 90* bend right out of the housing, like the RX8.
It's not really about "wanting" I don't have the space for anything else. The unibody "frame" is right there

I might have to make a box like the OEM manifold and have a 3" pipe come out of the bottom rear corner of it. That may be better than making a header that bends too tight.

Thoughts on that?
Old 04-14-09, 01:22 AM
  #4  
Stu-Tron Get Yo Groove On

iTrader: (4)
 
Jeezus's Avatar
 
Join Date: Nov 2006
Location: Huntsville AL
Posts: 8,405
Received 9 Likes on 9 Posts
Originally Posted by pac11adp
It's not really about "wanting" I don't have the space for anything else. The unibody "frame" is right there

I might have to make a box like the OEM manifold and have a 3" pipe come out of the bottom rear corner of it. That may be better than making a header that bends too tight.

Thoughts on that?
What car will you be swapping it into? Also, since you have found the need to have a "short" so-to-speak header, do you have any pictures or measurements that you need?

I have the RB header on my car and can measure the distance from the block to the furthermost point in the header.
Old 04-14-09, 08:42 AM
  #5  
Junior Member

Thread Starter
 
pac11adp's Avatar
 
Join Date: Mar 2009
Location: Powell River
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Jeezus
What car will you be swapping it into? Also, since you have found the need to have a "short" so-to-speak header, do you have any pictures or measurements that you need?

I have the RB header on my car and can measure the distance from the block to the furthermost point in the header.

MGB about 3.5 inches max
Old 04-14-09, 09:11 AM
  #6  
1st-Class Engine Janitor

iTrader: (15)
 
DivinDriver's Avatar
 
Join Date: Jun 2008
Location: Chino Hills, CA
Posts: 8,376
Received 26 Likes on 24 Posts
You might have heating issues if you bend the flow too tightly... a lot of expansive cooling takes place in that first inch or so. May force you to go wide.
Old 04-14-09, 10:13 AM
  #7  
Waffles - hmmm good

iTrader: (1)
 
t_g_farrell's Avatar
 
Join Date: Jul 2004
Location: Lake Wylie, N.C.
Posts: 8,783
Received 282 Likes on 232 Posts
You might consider using a stock exhaust manifold from an FB. I think it will fit what your trying to do.
Old 04-14-09, 11:54 AM
  #8  
Stu-Tron Get Yo Groove On

iTrader: (4)
 
Jeezus's Avatar
 
Join Date: Nov 2006
Location: Huntsville AL
Posts: 8,405
Received 9 Likes on 9 Posts
I think someone here has a rotary MGB? Or maybe its just an MGB. Not sure, I think his username is MG something.
Old 04-14-09, 11:55 AM
  #9  
Stu-Tron Get Yo Groove On

iTrader: (4)
 
Jeezus's Avatar
 
Join Date: Nov 2006
Location: Huntsville AL
Posts: 8,405
Received 9 Likes on 9 Posts
Yep, apparently he has just an MGB. 64MGB is his name.
Old 04-14-09, 12:50 PM
  #10  
i'm a poser

iTrader: (1)
 
thunkrd's Avatar
 
Join Date: Apr 2006
Location: san leandro, Ca
Posts: 1,919
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by t_g_farrell
You might consider using a stock exhaust manifold from an FB. I think it will fit what your trying to do.
he said it didn't fit, that's why he's asking about headers, err housingers
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jeremyferguson4444
1st Generation Specific (1979-1985)
8
09-19-15 01:27 PM
heywier427
Naturally Aspirated Performance Forum
2
09-11-15 04:49 PM



Quick Reply: 12a header that stay closest to block?



All times are GMT -5. The time now is 06:25 PM.