924Board.org

[pcelenta]

so I picked up a water pump for the 80 S1 from autozone...opened the box and it looked like the usual GMB pump casting wise...then I flipped it over to find a plastic impeller. quite odd but I suppose new technology. I am a little sketchy on the idea of a plastic impeller. what are the thoughts out there? return it and get a GMB with metal impeller or give this one a try.

Paul

[Rasta Monsta]

Beemer pumps have been constructed this way for years.
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Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[Fifty50Plus]

I've had a few plastic impellers slip on the shaft and the engine runs hot. Fix was to pin the impeller.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

[mikebola]

working for a company that uses plastic turbines and impellers on steel axles that are made to spin up to 30k rpm, I have to agree that it's only a matter of time before it slips on the axle, even if it's knurled or flattened.
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proud owner of a 1979 924 Sebring Edition with a 931 trans that looks horrible but somehow runs...

[emoore924]

Having replaced a couple of those BMW plastic impeller pumps with the much more desirable metal impeller pumps, I can tell you the BMW crowd does not like the plastic pumps, myself included.

I've never seen a plastic impeller 924 (early) pump.

[pcelenta]

autozone must have a new supplier because the last one I picked up from them had a metal impeller. I have to look to see if it is pinned...if not I may just bring it back.

[txjake]

never met a plastic impeller that I liked
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1978 924, aka The Red Rocker

[ideola]

The ones I provide are GEBA brand and are all metal.



Water pump by itself is $63 + shipping.
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erstwhile owner of just about every 924 variant ever made

[pcelenta]

thanks dan, I'll be ordering from you shortly.

regards,
Paul