Removing smog pump

I believe it's worth the weight loss alone to trash the smog pump.

I removed mine awhile back and i'm so glad I did. It cleaned up the engine nicely. I got some thermactor plugs from the dealer and put those in the back of the heads where the steel tube bolts into. Also there will be 2 vacuum hoses you will need to plug too.

This is a pic of AC and smog removed. Look at how much more room there is!!

Does anybody make a decent delete pulley? I have an ASP, and it is already whining like it is going bad.

Why bother with a delete pulley? Just buy a shorter belt and modify the routing:

Have you been able to get the tensioner in the safety marks without using the smog delete pulley?

Bullitt95 said:

Why bother with a delete pulley? Just buy a shorter belt and modify the routing:

Click to expand...

Yes. If you have all stock pulleys, a 90.2" belt (6PK2290) would be a perfect fit. I have an ASP crank pulley so I'm using an 87.4" Gates K060868 belt which also fits perfectly.

In the past I had problems with the tensioner bottoming out and "clanking"

i don't have smog or ac so does anybody know the belt size for that. i have a smog elemator pulley on there now but want to take it off. any info would be nice. also has anybody ever heard of a 94 gt coming with power everything except cruise and ac. that is how my car come from the factory and everyone i talk to says they have never heard of that. thanks again.

mine clanks too right now. To remedy my last car's "clanking" I used an underdrive pulley on the alternator. It took up just enough slack to get the tensioner back into the safe zone. No adverse effects to charging either.

The smog pump does not cool off the cats. It only pushes air into the exhaust stream during cold starts to add oxgen to the rich afterstart mixture. This creates an after-burn in the cats to get them up to their operating temp where they work. Most cases where someone's cats plug up after removing the smog equipment is due to air leaks that were not sealed up properly. If you introduce a significant amount fresh air into a lit catalyst, the cat will melt down in a matter of seconds.

The smog pump robs power because it runs all of the time, even though it's only really used during a cold start. If you trace the system, you'll notice that it has two stages: The first is to light off the pup cats, then it switches from pumping air into the ehxaust ports to pumping air directly into the underfloor cat. I don't know exactly how long this lasts, but it's not continuous. The third stage just dumps the air.