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Tire abuser
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Discussion Starter · #1 ·
I have had it off a couple of times but you cannot see through element, or even the element face due to the curves. How can you verify when it is going bad?

Since I track the car, it should probably be removed.... I just don't really need a louder car or the raw gas smell for the street.
 

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re: How to test a Cat

The simple answere is that there is no easy way and not really by looking at it.

A catalytic converter is a clay or ceramic substrate covered with a very thin layer of catalyst (the catalyst contains platinum or iridium, $$$). It goes bad in two ways:

1. The catalyst gets damaged or poisoned (by sulphur or lead in the fuel or all the other combustion by-products). This is why you have 2 O2 sensors, one measures O2 before and the other after the cat, if there is a delta, all is good. Once there is not, you will get a code and an engine light.

2. the small passages may get plugged up with all the exhaust going through them. The only way to test is to put a pressure sensor in the exhaust and see, if thepressure before the cat is acceptable/correct. If is start going up to 3 psi or more, it is plugged up.

The cat gets hot, because it burns up un-burnt exhaust. It is considered a fire hazard for track and other uses.

Anton


I have had it off a couple of times but you cannot see through element, or even the element face due to the curves. How can you verify when it is going bad?

Since I track the car, it should probably be removed.... I just don't really need a louder car or the raw gas smell for the street.
 

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Tire abuser
Joined
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773 Posts
Discussion Starter · #3 ·
^^^^ Thanks. That is pretty much what I would have guessed.
 
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