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It's a 914 ...
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,698
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Oil pump doesn't spin freely?
I just purchased an early 911 oil pump, and the first thing I notice is that it doesn't spin freely. I can barely turn it if I use every ounce of strength in my fingers on the splined shaft. I don't recall the last 911 oil pump I worked on being so tight, and a quick search on the forum seems to indicate that the pump should spin more easily than this.
Should it spin more freely? Thanks. Scott |
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11-06-2015, 02:27 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,123
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If it is pickled in gear oil, it won't spin easy at all. If it is flushed with a clean solvent and still does not spin without a lot of force, an autopsy might be in order.
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11-06-2015, 03:29 AM
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Registered
Join Date: Jan 2003
Location: Annapolis MD
Posts: 1,020
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Always worth opening it up to see what you really have and give it a good cleaning. Could be oil or pickled in preservative oil.
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11-06-2015, 06:54 AM
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It's a 914 ...
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,698
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Thanks l, guys. On a related point, I tried to open the pump but found it surprisingly difficult to pull it apart. I didn't want to force it so I stopped. I don't recall having this much trouble with the last one I opened. Any suggestions on good ways to open it up?
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11-06-2015, 09:00 AM
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abit off center
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alignment pins? should pull apart, done a lot never had problems, does it look like its been apart before? maybe they used some sealer or loctite? Warm it up?
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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11-06-2015, 12:30 PM
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It's a 914 ...
Join Date: Jan 2008
Location: Ossining, NY
Posts: 4,698
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Thanks, I can trying warming it a bit. Is it OK to tap on the alignment pins with a roll pin punch and hammer? Or should it just pull apart with my hands?
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11-06-2015, 05:50 PM
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Registered
Join Date: Feb 2005
Location: California
Posts: 724
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Just tap the pins out using a pin punch. The pump should not be difficult to turn nor should it bind during rotation. There's some good advice here for reconditioning these pumps. Search this forum for oil pump and I think you should find a post by Scott Kinder.
andy |
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11-06-2015, 09:28 PM
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Registered
Join Date: Feb 2005
Location: California
Posts: 724
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Last edited by ajwans; 11-07-2015 at 02:03 AM.. |
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11-07-2015, 01:58 AM
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Registered User
Join Date: Mar 2012
Location: Woodland Hills CA
Posts: 195
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Is there anyone in the LA area who you would recommend to open up and inspect a 930 oil pump. Not sure I want to risk damaging it with my limited disassembly skills.
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11-07-2015, 04:19 AM
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Registered
Join Date: Feb 2005
Location: California
Posts: 724
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Henry Schmidt, he is in Fallbrook, CA
andy |
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11-07-2015, 05:05 AM
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Registered
Join Date: Sep 2005
Posts: 950
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LA area. .Glenn Yee Motorsports in San Dimas.
He mods these oil pumps for increased flow too. |
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11-09-2015, 05:49 PM
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Registered User
Join Date: Mar 2012
Location: Woodland Hills CA
Posts: 195
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Thanks guys, will contact them both.cheers
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11-09-2015, 06:56 PM
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1969 and 1986 Porsche Targa and Coupe 1720cc and 3
