Installing catco cat
#1
Installing catco cat
Well im installing my new 2.5 catco cat but its much smaller than the original one(the honey comb inside the original was in pieces just rolling inside the cat), and i don't know what piping i should buy to fit it in to weld myself im guesing i should get a 2.5 pipe with a opened wider end and maybe weld it to a flange, has anyone have experience with this
#4
rx-for-my-7
iTrader: (1)
depending on your emissions requirements it's often desirable to remove the stock precats and run a single high flow catalyst. You might be able to install the cat, pass emissions and then hollow it out after the test. Or buy a better cat that will last longer in the high heat of the rotary exhaust.
#7
Rotary $ > AMG $
iTrader: (7)
Here is the shiznitz on catalytic converters. The term 'high-flow' is industry lingo for 'contains a ceramic brick'. The old style converters contained chambers of BB-sized ceramic catalyst coated *****. These were very restrictive. When the ceramic bricks came out, they were termed high-flow. This may have all occured before you were born.
Pretty much ALL cats these days are the 'high-flow' type. That does not mean that the will give high performance or last very long in a rotary engine.
If you want a cat that will last and will not give lots of back pressure, you should look at the engine size rating and you should look at the AREA of the front of the brick(s). These two things are related. A converter rated for a small engine will have a smaller brick and less frontal area on the brick, yielding higher brick temperatures and more restriction that a converter rated for a large engine. The larger brick will allow the heat of reaction to spread over a larger area and will last longer.
The cat I used on my 90 vert is as follow:
http://www.autozone.com/selectedZip,.../selectZip.htm
It's rated for 7000# or 7.7l (472 cu").
More details:
https://www.rx7club.com/showthread.p...&highlight=cat
Pretty much ALL cats these days are the 'high-flow' type. That does not mean that the will give high performance or last very long in a rotary engine.
If you want a cat that will last and will not give lots of back pressure, you should look at the engine size rating and you should look at the AREA of the front of the brick(s). These two things are related. A converter rated for a small engine will have a smaller brick and less frontal area on the brick, yielding higher brick temperatures and more restriction that a converter rated for a large engine. The larger brick will allow the heat of reaction to spread over a larger area and will last longer.
The cat I used on my 90 vert is as follow:
http://www.autozone.com/selectedZip,.../selectZip.htm
It's rated for 7000# or 7.7l (472 cu").
More details:
https://www.rx7club.com/showthread.p...&highlight=cat
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
tiger18
3rd Generation Specific (1993-2002)
9
09-03-15 08:27 PM