clogged cat vs. open headers

[ocskipper]

My stock 87 2.5L has a clogged cat, at least I'm about 99% sure :fs1: It rattles really bad under acceleration and idle and I have experienced a loss of what little power I had. I am not in a position to replace the CAT right now so I was wondering if it would be better to run with no cat or muffler (straight headers) or just with the clogged cat. I know I will eventually foul my O2 sensor with the cat like it is, if i havent already. Plus it is really annoying/embarrasing. But i also know I will lose power/back pressure with no muffler.

 

This would be a very temporary fix to continue getting me to work and back until I can weld it all up again. What would you do? :dunno:

 

-Skip

:USAflag:

[redneck23ms]

can you cut the cat out and stick a piece of tube in there and clamp it in until you are able to replace the cat? thats what i would do

[mnkyboy]

I'm running a flowmaster muffler with no cat on my 2.5L and it runs pretty good.

 

Alot of people gut the cat,take it off and break/beatout all the catylist material.

it runs like it would with no cat but your exhaust might have a wierd hollow sound to it.

[Wildman]

:agree:

 

I've done this several time, there is really no ill effects to run with a hollowed out cat.

 

Been running my cuber for the past 3 years with a hollowed out cat, I don't feel like spending over $300 for a replacement. But........We don't have sniffer test up here on anything older that '96 :D

 

What every you punch out, save it, it's sill worth $$$. Unless platinum has fallen in the market :hmm:

[rworks]

My 87 4.0L has no cat anymore. The old one went bad and the shop forgot to put in a new one when I replaced the muffler last year. Seems to run just fine without it.

[64 Cheyenne]

I punched out the cat on my 90 caravan and experienced a loss of MPG.

This is what I did to my truck.

 

 

Punched it out,tubed the inside. don't know how well it'll work as I don't see the truck being done till this Fall or Winter.

[1990 Pioneer 4x4]

If you're looking for a quick fix, why don't you just drill out the clogged cat...

[dakal]

yeh