Hey my smog pump has had no belt for a few months now, and I just took out the smog pump. Around how many miles would it take for the cat to become clogged?

 

Should be 100% fine, the air tubes just increase the efficiency of the cat by heating it up. Kind of a furnace effect.

 

well it would take your car running pig rich for a few months to clog it. i had one on my car and i took about 4 months (dead of winter) to clog mine. i was running pig rich and couldnt get the carb to run right and when i came time for inspection i failed, new cat solved that problem. so it will take some time if your car was running bad, but if its running fine ull have no worry at all.

 

Timz, good luck passing inspection with a 496 BBC!

 

hehe i know a few people i think ill pass just fine

 

4 years now and still good with no smog pump to the cat. Also passed my dyno emissions with the 383 with no smog or EGR Just Cat

 

Ahh, Timz, I see you do as I do when it comes inspection time.
Mkos, that's pretty impressive to pass dyno smog without those things; I figured that it would not pass without them. Good to hear that some people are passing without all that crap. Do they not do a visual for the smog pump in OH?

 

No visual in Ohio. just a mirror under to check for cat and 2 probes in the tail pipe. They keep it at 25-30 MPH for 2 minutes then decide

 

One time at my inspection, they got underneath and banged on the cat with a hammer or something to see if my cat was gutted. Obviously, this method doesn't work.

 

They were probably just seeing if the catalyst was loose and rattling around in there. By law it is defective if it is