Technical Tips > Post 84

AIR Pump

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SAVette:
I've also always thought the AIR pump was the funniest thing I've seen, ever since they came out on the VH Commodore (I can still remember the TV ad for the "air injected" engine). It's amazing what a marketing dept is capable of when required to. It appeased to gov't and the greenies who didn't want to spend the money to prove the big car companies wrong.

However, does Qld have annual inspections? I'm pretty sure NSW does. Does the Sydney one include emissions, or do they just kick the tyres and check the number plate light? I'd be interested to see how some of these cars with the AIR pump disabled/removed fare with an emissions check. Even if the pump is just "diluting" the emissions and not actually reducing them as they claim, the results will still be higher.

Anybody had experience with this?

Unless you're trying to fit aftermarket headers without the AIR pipe, why would you bother? Surely it's only using a poofteenth of a hp to drive.

77CVT:
No annuals in Qld.

Air pump removal makes the engine bay look purdier!  (and a poofteenth is a poofteenth!)

SAVette:

--- Quote ---Originally posted by 77CVTAir pump removal makes the engine bay look purdier!  (and a poofteenth is a poofteenth!)
--- End quote ---


This may be true - and I'm all for the minimalist approach to engine bays - but the serpentine belt set-up makes that more difficult, not impossible, granted, but more difficult. But this thread started with a "gutted" pump, that would look almost stock, apart from maybe getting rid of the plumbing. Apart from the fact that all that ancilliary crap makes everything harder to work on. The only "add-on" on my Monaro is an alternator, and it's a dream to work on. You need the hands of a three-year-old to work on me 'Vette.

david_moore:
Hi Stingray!
I am pretty much high on life these days! It doesn't take much to get me up there! Wrestling with Corvettes is my forte, and tales many I have to tell! I live at Oatlands where Elvis would live if he was an Aussie! And Alive Ofcourse!! Just near Parramatta, and don't get me started about me favourite team (I don't like to cry). I have a 1979 Corvette which is sadly up for sale as I have recently purchased a rather proud 1991 Corvette. One of the first things I am going to look at is whether it has one of those rotten air pumps!!! I must update my profile soon, once I have lost the techno phobia of using a computer....Oh to be able to post pictures!!:mmm Hope you have sorted your Corvette !!!!:22

Stingraynut:
Yep, no annuals in QLD….but don’t tell anyone….

The reason I gutted my pump was because the rear bearing was shot and they aren’t repairable. The pumps are a little noisy even when new because the vanes move in and out as they rotate and touch the drum wall just at the point of highest compression. My rear bearing was almost terminal by the time I removed the pump – one of the roller bearings was missing ! It was embarassingly noisy.

The internal drum is heavy and I think it adds unnecessary inertia on the belt. Unfortunately the new main shaft and bigger bearings hasn’t changed that as much as I would have liked. I’ll eventually remove all the AIR fittings but for the moment I’.m on the trail of other things.

Congrats on the 91 David, look forward to seeing some pics one day.

S’nut

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