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Registered User
Join Date: Jul 2012
Location: Toronto,Canada
Posts: 49
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oil pressure readings.
took my newly aqquired 1976 911 with a 3.2l engine for a drive today and noticed my oil pressure guage reads at warm up idle around 20psi,revs at2k rpm my oil pressure guage reads 100psi and over that it will peg to 140psi as im cruising on the highway.runs great and no other issues,just seems extremely high to me.is this considered normal,what are you guys seeing as far as readings??
thanks Last edited by turbo grey; 10-10-2015 at 05:12 PM.. |
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10-10-2015, 05:09 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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It sounds like the engine has the wrong oil pressure sending unit for the stock gauge in your '76.
Install a 2.7 OP sender and you'll likely be OK. This is a very common issue. 
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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10-10-2015, 05:53 PM
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Registered User
Join Date: Jul 2012
Location: Toronto,Canada
Posts: 49
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thank you for the reply.just tried the search engine in this forum and seen that many have had this issue with the engine swaps and wrong sending units.
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10-10-2015, 06:24 PM
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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,641
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I just had my motor top end rebuilt. The oil pressure sender was replaced. The PN appears to be correct but the gauge reads way too high.
Are there two ranges for the single PN (i.e. 0-5 bar and 0-10 bar)? Or do I have defective transmitter?
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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01-19-2016, 08:55 PM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,467
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There is 2 series of oil pressure senders and gauges along with 2 series of temp senders.
The gauges and senders are supposed to match for correct readings The oil pressure senders and gauge through 77 was 0 to 10 atm. With the 3.0 SC the change was to 0 to 5 atm The temp gauge and sender changed about 76. On the engine, the temp sender through about 76 was brass with 901 part number stamped. After that the change was to a 911 part number sender in chrome finish Bruce |
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01-20-2016, 03:34 AM
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Registered
Join Date: Jan 2009
Location: Marietta, Ga (Atlanta)
Posts: 2,970
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Quote:
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'80SC Widebody 3.6 transplant Anthracite "The Rocket" Long gone but still miss them all: '77 911 Targa, '72 BMW 3.0CS Coupe(finest car I ever had!) '71 911T Coupe White, '70 911T Coupe Blue '68 911 Coupe Orange, '68 911L Soft Window Targa |
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01-20-2016, 04:28 AM
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