C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

AIR pump

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Old Jul 10, 2006 | 11:03 AM
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Default AIR pump

So do I get headers with the AIR pump or just take the whole system out?

The bullet cats that I would replace the original one with do not have the AIR hose to connect to. So what do I do with that hose? cap it?

If I take out the air system, what does that do to belt routing? Is it absolutley essential to replace the air pump with that pulley replacment thing I've seen in mid America?
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Old Jul 10, 2006 | 11:09 AM
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I havent found a belt that will work, so you'll need to use the pulley they sell if you delete it altogether. If I were to keep it intact I'd tack it to the exhaust pipe downstream, theres going to be air pushed through it during closed loop when the stream switches to the main.

Youre better off deleting it though.
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Old Jul 10, 2006 | 11:18 AM
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Originally Posted by vader86
I havent found a belt that will work, so you'll need to use the pulley they sell if you delete it altogether. If I were to keep it intact I'd tack it to the exhaust pipe downstream, theres going to be air pushed through it during closed loop when the stream switches to the main.

Youre better off deleting it though.

What is this thing supposed to do? Are there any ill effects to removing it?
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Old Jul 10, 2006 | 11:31 AM
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AIR pumps air into the cats to get them lit quicker so they can do their job. On startup its routed into the manifolds to the precats, and in closed loop switches to the main cat.

As long as the car is hot, it'll pass an emissions test. Since its an L98, it wont have any code set or anything.
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Old Jul 10, 2006 | 11:46 AM
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Originally Posted by vader86
AIR pumps air into the cats to get them lit quicker so they can do their job. On startup its routed into the manifolds to the precats, and in closed loop switches to the main cat.

As long as the car is hot, it'll pass an emissions test. Since its an L98, it wont have any code set or anything.
That's it? that's all they do?
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Old Jul 10, 2006 | 11:53 AM
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That is all. Its a stopgap 70's thing.
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Old Jul 10, 2006 | 11:54 AM
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Originally Posted by vader86
That is all. Its a stopgap 70's thing.
In which case, depending on which way I go, there may not be an air pump in my future.

Is it a stand alone system or are there holes that need blocking off and such? If I remove the components, does it effect any other system?

Last edited by jsup; Jul 10, 2006 at 11:57 AM.
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Old Jul 10, 2006 | 01:52 PM
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Like I said, it doesnt do anything else, its stand-alone. You just yank off the associated pipes. If you buy headers (or a cat) with AIR fittings, you dont even have to plug them if you dont want to, the valve is one-way.
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