RX7Club.com - Mazda RX7 Forum

New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

exhaust pattern difference between 12a and 13b?

Thread Tools
 
Search this Thread
 
Old 09-12-08, 08:36 PM
  #1  
weiRtech

Thread Starter
 
weirRacing's Avatar
 
Join Date: Mar 2005
Location: Ontario, Canada
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
exhaust pattern difference between 12a and 13b?
i know the bolt pattern is essentially the same, but aren't the exhaust ports closer together on the 12a than the 13b? can someone clarify?

thanks.
weirRacing is offline  
Reply Like
Old 09-13-08, 02:33 PM
  #2  
Who Shot the Sheriff?

iTrader: (2)
 
Turbo II Rotor's Avatar
 
Join Date: Jan 2007
Location: Aurora, CO
Posts: 3,858
Likes: 0
Received 1 Like on 1 Post
The 12a housings are 10mm narrower than the 13b housings. That means the exhaust ports are closer and the exhaust bolts are 5mm closer to center on each side.
Turbo II Rotor is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
13b swap
Josh83rx7
1st Generation Specific (1979-1985)
7
09-02-15 05:57 PM
Drive Shaft Length
Cameron38
1st Generation Specific (1979-1985)
3
08-19-15 06:08 PM
12a tuning questions.
rx7brandon
General Rotary Tech Support
3
08-16-15 10:55 AM
Tags
Back to Subforum
New Member RX-7 Technical
View Next Unread
Replacing my 13b with a 13b turbo




Advanced Search
Quick Reply: exhaust pattern difference between 12a and 13b?


Reply Closed Thread Share

All times are GMT -5. The time now is 02:10 AM.