Re: A-990 aluminum pumps have a steel sleeve for rotor?
[Re: fullmetaljacket]
#2527925
07/27/18 04:01 PM
07/27/18 04:01 PM
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Joined: Jan 2012
Posts: 2,603 Stuttgart, Arkansas
rickseeman
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Stuttgart, Arkansas
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I think what hurt them most was blow ups getting metal pieces in them. The aluminum can't take much metal without scoring it.
2011 Drag Pak Challenger
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Re: A-990 aluminum pumps have a steel sleeve for rotor?
[Re: fullmetaljacket]
#2527971
07/27/18 05:07 PM
07/27/18 05:07 PM
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Joined: Jan 2012
Posts: 2,603 Stuttgart, Arkansas
rickseeman
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master
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Stuttgart, Arkansas
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We would like to change the pump but nowadays there's no A-990 pumps on the shelf. Years ago NHOA found a NOS stash of them and had them in the newsletter for sale for $19.95 each. But those days are gone.
Last edited by rickseeman; 07/27/18 05:07 PM.
2011 Drag Pak Challenger
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Re: A-990 aluminum pumps have a steel sleeve for rotor?
[Re: fullmetaljacket]
#2528070
07/27/18 09:06 PM
07/27/18 09:06 PM
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Joined: Nov 2016
Posts: 200 Colorado
Bob J
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enthusiast
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Colorado
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There is always the Milodon billet oil pump and cover
07 Porsche C2 997.1 6spd DD and SCCA Solo II SS 68 Plymouth GTX Convert. 493cu Hotkiss Wilwood Classic air, Building for Solo II Cam 65 Chrysler 300 Convert. project 57 Desoto 2dr. Firesweep 392 Hemi,Wilwood Project with son 2003 Dodge Dakota R/T "DEAD"
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Re: A-990 aluminum pumps have a steel sleeve for rotor?
[Re: Stanton]
#2528112
07/27/18 11:24 PM
07/27/18 11:24 PM
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Joined: Feb 2003
Posts: 6,849
fullmetaljacket
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I would argue as well "not the pump body" but in this case aluminum pump body? Softer material casted in the early 60's. Especially aluminum casted in those early days compared to billet tempered alloys such as the case today.
Last edited by fullmetaljacket; 07/27/18 11:25 PM.
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Re: A-990 aluminum pumps have a steel sleeve for rotor?
[Re: fullmetaljacket]
#2528144
07/28/18 12:27 AM
07/28/18 12:27 AM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
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Memphis
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Buicks had the oil pump in the alum front cover and they have a terrible reputation for wearing out prematurely.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: A-990 aluminum pumps have a steel sleeve for rotor?
[Re: AndyF]
#2528170
07/28/18 01:56 AM
07/28/18 01:56 AM
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Joined: Feb 2003
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fullmetaljacket
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Yeah, aside from the curiosity of reliability, I did take a good look at a real A-990 unit recently and it almost bit me again with the STOCK look. Yes, I've thought of the Milodon unit as well, but the A-990 looks the part without the assurance. That being said, I would not chance my motor on some unit that has the look but can cook my motor.
Last edited by fullmetaljacket; 07/28/18 01:57 AM.
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