2nd Generation Specific 1986-1992 Discussion

Rb Header Hooking Up To A 2.5 In Cat?

Old 01-26-2004, 12:55 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Sep 2003
Location: Albany, New York
Posts: 571
Default

I have purchased a RB header, and I have a Magflow high flow cat. I know thaty I will need to do some fabrication to fit, but will going from a 2 in. od on the collector of the header to the 2.5 in od on the cat, would that cause a disturbance in the exhaust flow, and cause too much pressure? Any help.
cps87rx7se is offline  
Old 01-26-2004, 01:35 PM
  #2  
Senior Member
 
Join Date: May 2002
Location: California
Posts: 22,466
Default

i'm not sure but i think it would help, cause the cat is a restriction, and if you make it bigger its less of a restriction
j9fd3s is offline  
Old 01-26-2004, 04:38 PM
  #3  
Member
 
Join Date: Jan 2003
Posts: 75
Default

It will help, and if u have your sleeve's still in you will need a little back pressure to actuate them, all's you will need is a decreaser piece that goes from 2" inside diameter, to 2.5" inside diameter. Unless the header bolts right up to your high flow.
JspecRX7 is offline  
Old 01-26-2004, 07:20 PM
  #4  
Senior Member
 
Join Date: Aug 2002
Location: Eastern PA
Posts: 1,801
Default

I have the same setup except using a Catco cat. There was a slight neck down at the flange to the header but its ok.
FCmaniac is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jeREmy_k
Northwest Regional For Sale Forum
0
07-15-2006 07:17 PM
Rxmfn7
RX-7 & RX-8 Parts For Sale & Wanted
2
12-07-2003 02:24 AM
JimmyJimboJet
3rd Generation Specific
5
12-16-2002 11:53 PM
FCmaniac
2nd Generation Specific
2
10-05-2002 09:20 PM
Suparslinc
1st Generation Specific
5
08-16-2002 11:46 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Rb Header Hooking Up To A 2.5 In Cat?


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.