Which random tech should I buy?
Thread Starter
Race Director
Joined: Feb 2001
Posts: 13,914
Likes: 101
From: Manassas VA
NoVa Events Coordinator
St. Jude Donor '14
Which random tech should I buy?
Round, Metal Matrix
7000 Series-- 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2" and 4" inlet/outlet
Round, Ceramic
8100 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
Oval Ceramic
8000 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
9000 Series-- 2", 2-1/4", 2-1/2", 3", 3-1/2" and 4" inlet/outlet
I'm going to go with 3"inlet/outlet but can't decide with series to go with. suggestions?
7000 Series-- 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2" and 4" inlet/outlet
Round, Ceramic
8100 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
Oval Ceramic
8000 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
9000 Series-- 2", 2-1/4", 2-1/2", 3", 3-1/2" and 4" inlet/outlet
I'm going to go with 3"inlet/outlet but can't decide with series to go with. suggestions?
Melting Slicks
Joined: May 2002
Posts: 2,670
Likes: 4
From: Severna Park MD
Originally Posted by Bluewasp
Round, Metal Matrix
7000 Series-- 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2" and 4" inlet/outlet
Round, Ceramic
8100 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
Oval Ceramic
8000 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
9000 Series-- 2", 2-1/4", 2-1/2", 3", 3-1/2" and 4" inlet/outlet
I'm going to go with 3"inlet/outlet but can't decide with series to go with. suggestions?
7000 Series-- 2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/2" and 4" inlet/outlet
Round, Ceramic
8100 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
Oval Ceramic
8000 Series-- 2", 2-1/4", 2-1/2" and 3" inlet/outlet
9000 Series-- 2", 2-1/4", 2-1/2", 3", 3-1/2" and 4" inlet/outlet
I'm going to go with 3"inlet/outlet but can't decide with series to go with. suggestions?
Considering where you have to put them behind the header collector you would want the round for space. I have no opinion on metal or ceramic matrix.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
The metallic substrate cats are the least resrictive. And unfortunately the most expensive. An alternative would be a set of a Dynatech Headers metal cats which are available from JEGs or SUMMIT for about $149 
Melting Slicks
Joined: Aug 2000
Posts: 2,069
Likes: 25
From: Orlando FL
Wish I could help you, Robert, but I don't recall which RT bullet cats I have installed. At any rate they're the round ones and I tend to think they were the metal substrate jobs. I have them installed behind my headers with stainless steel band clamps. I had two lengths of straight pipe cut to fit in their place for racing, but to be honest, I've never bothered with swapping them.
Melting Slicks
Joined: May 2003
Posts: 3,490
Likes: 68
From: Hewitt NJ
Originally Posted by tjwong
The metallic substrate cats are the least resrictive. And unfortunately the most expensive. An alternative would be a set of a Dynatech Headers metal cats which are available from JEGs or SUMMIT for about $149
The Metal Matrix flow better. On a stock engine it probably wont make much of a difference, but on your modified engine it does.
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