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Registered
Join Date: Dec 2000
Location: The Hague, Netherlands
Posts: 806
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Upgrade oilpump on early S?
Just finished disconnecting everything to drop the engine tomorrow. I now have basically all parts to do the rebuild but one thing is nagging me; should I upgrade the oilpump (and pressure valves)?
I did not have any complaints about oil pressure but I am a bit anal in getting things right. Are there any definitive advantages? And if so, should I get a used one or a new pump?
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Peter '13 981S '73 911T '05 996 4S cab, now gone '70 911S Targa, now gone |
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04-06-2002, 12:21 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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Peter,
You can do the 'bypass mod' with the new plungers and spring & guide ... without having to update the oil pump. That change alone reduces the load on the scavenge pump and intermediate shaft, and probably saves a hp or two as the result. The benefit of the later '76 Turbo/SC, '84 Carrera, or 964 pump is greater pressure pump volume and higher resulting oil pressure.
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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04-06-2002, 01:23 PM
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Join Date: Apr 1999
Location: a
Posts: 270
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Peter,
What is it going to cost you to do this rebuild? |
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04-06-2002, 01:56 PM
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Registered
Join Date: Dec 2000
Location: The Hague, Netherlands
Posts: 806
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Thanks Warren, interesting thought. I am going to consider this.
Costs: I stopped counting, it's kind of a black hole moneywise. I am going to put in new P/C's, intermediate gears, chainwheels, big/little end rod bearings, main bearings and some other work. Heads were done last year together with MFI pump, t-bodies and cams. As long as the girlfriend does not find out.. ;-)
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Peter '13 981S '73 911T '05 996 4S cab, now gone '70 911S Targa, now gone |
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04-06-2002, 11:55 PM
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