 Re-using stock oil pump on a stock-ish rebuild |
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| saigon71 |
 Feb 3 2016, 02:47 PM
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#1
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Advanced Member  Group: Members Posts: 2,000 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region 
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Pulled my stock oil pump apart and gave it a close inspection. The internals look great with little discernable wear. The only real wear spot I found were slight marks on the drive tang from the cam gear.
The engine I'm building will be a stock-ish 1971 or 2056 with a stock cam or a cam slightly more aggressive than stock. Stock D-jet FI. No external oil cooler. Any issues re-suing the stock oil pump?   |
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| r_towle |
Feb 3 2016, 03:58 PM
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#2
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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i may be unique but its all I will use.
Blueprinting helps quite a bit |
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| TheCabinetmaker |
Feb 3 2016, 04:17 PM
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#3
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
I run a stock pump in my 2056 with 436 lift cam and 9.1 cr. No problems.
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| r_towle |
Feb 3 2016, 04:22 PM
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#4
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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The main issue, aside from the internals not being healthy, is the inlet and outlet holes in both the pump and the case have very sharp edges which can aid in decreased oil pressure, especially at lower rpms.
If you ease those edges, and get the Foley spring.....should be more than enough oil pressure. rich |
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| McMark |
Feb 3 2016, 04:44 PM
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#5
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Go for it.
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| MartyYeoman |
Feb 3 2016, 05:22 PM
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#6
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Senior Member Group: Members Posts: 1,520 Joined: 19-June 03 From: San Ramon, CA Member No.: 839 Region Association: Northern California
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Foley spring? (IMG:style_emoticons/default/confused24.gif)
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| jmill |
Feb 3 2016, 05:31 PM
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#7
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Green Hornet Group: Members Posts: 2,449 Joined: 9-May 08 From: Racine, Wisconsin Member No.: 9,038 Region Association: Upper MidWest |
Attached image(s) 
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| porschetub |
Feb 3 2016, 05:40 PM
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#8
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Advanced Member Group: Members Posts: 4,706 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(saigon71 @ Feb 4 2016, 09:47 AM)  Pulled my stock oil pump apart and gave it a close inspection. The internals look great with little discernable wear. The only real wear spot I found were slight marks on the drive tang from the cam gear. The engine I'm building will be a stock-ish 1971 or 2056 with a stock cam or a cam slightly more aggressive than stock. Stock D-jet FI. No external oil cooler. Any issues re-suing the stock oil pump? It fine to use again (IMG:style_emoticons/default/beer.gif) ,oil filter helps here...not like type 1 motors that chew out pumps. |
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