smog pump for CA cars

[cantdrv55]

Does anyone know if a smog pump from a '75 will fit a '79SC? Mine is binding and shredding belts. Is the smog pump pulley supposed to turn with little resistance? When I turn mine by hand, it's smooth for a couple of turns then binds a half or so turn then smoothens out again. Is that normal?

[RoninLB]

'75 ----- 911.113.111.01 air pump w/pulley

'76-'79 - 911.113.111.03 air pump W/O pulley

[cantdrv55]

Thanks Ronin.

[Joe Bob]

I have one here that came off my 3.0....make me an offer.

[vash]

you can still drive the car without a smog pump right? i mean while the belt is shredded and you are in the process of getting one.

[cantdrv55]

I've read mixed comments about driving the car with the belt off. I don't know for sure. If someone knows the answer, please chime in.

[RoninLB]

generally it's OK to drive the car with the pump disconnected.

the only issue I have ever read about is that if you have Thermal Reactors.. then the added pump airflow will keep the Thermal Reactors, thus the heads, cooler.

[Joe Bob]

Ran mime w/o it for years....it's been sitting on a shelf. Now that I have a 3.6 don't need it....

[RoninLB]

Originally posted by mikez
Ran mime w/o it for years....it's been sitting on a shelf.

ditto..
but I had the 3 in 1 tubes instead of the reactors.. it was a real constipated exhaust flow.

[911novice]

Go ahead and take the whole thing off, it won't hurt a thing and will only give you more room and less weight. I have 2, one for the 2.7 and one for the 3.2, both look and fit the same and are only used once every two years (smog). Personally I think the car goes faster without it on but it could be several other things.

[emcon5]

You will need it to pass the visual portion of the California smog check.

Tom

[Joe Bob]

My SC was a euro model that was Federalized when it came over....all US SCs in 83 did not have a pump....mine did. It has a 930 part #.....

[911novice]

I just passed CA smog by installing the smog pump and well that's it. Car has backdated exhaust (74) and no cat. conv.

[juanbenae]

what state novice?

[911novice]

ca

[juanbenae]

county? was it the dyno roller test? did they ask about the cat not being on it? or were the heat exchangers mistaken? i have heard that a numb tech may mistake the exchangers for a cat.