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Re: [GMCnet] Fluctuating Oil Gauge Readings [message #189700 is a reply to message #189698]

Fri, 09 November 2012 05:25

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma:

Senior Member

John,

I reckon the engineers at GM were smarter than the engineers at the other car companies! By locating the oil pressure tap at the end
of the oil feed you know that the pressure gets higher as you head "upstream."

Regards,
Rob M.

-----Original Message-----
From: John Heslinga

Hi Keith:

An interesting thing about the OLDS engine is that the oil pressure sending unit is tapped at the low pressure end of oil Galleries,
rather than tapped at the high pressure side of the Galleries. (Farthest away from the oil pump.) This means that you will SEE
more pressure fluctuations with temperature. (As others have said fluctuations with speed and temperature are normal)

In my experience this is actually quite uncommon. Most of the engines I've worked with have their oil pressure sending units tapped
on the downstream side of the oil filter where the oil enters the oil galleries. (Chevy Ford, and Chrysler V8s)

John

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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[Message index]

		[GMCnet] Fluctuating Oil Gauge Readings By: enate98690 on Thu, 08 November 2012 11:55
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: James Hupy on Thu, 08 November 2012 14:10
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: JohnL455 on Thu, 08 November 2012 17:14
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: Ken Henderson on Thu, 08 November 2012 17:55
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: John Heslinga on Fri, 09 November 2012 00:36
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: USAussie on Fri, 09 November 2012 05:25
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: Matt Colie on Fri, 09 November 2012 08:24
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: USAussie on Fri, 09 November 2012 16:05
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: Matt Colie on Fri, 09 November 2012 17:48
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: kingd on Fri, 09 November 2012 18:30
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: jhbridges on Sat, 10 November 2012 07:40
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: bobby5832708 on Fri, 09 November 2012 20:36
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: USAussie on Fri, 09 November 2012 21:35
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: Jim Galbavy on Sat, 10 November 2012 22:11
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: jhbridges on Sat, 10 November 2012 07:50
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: midlf on Thu, 15 November 2012 22:15
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: Ken Henderson on Fri, 16 November 2012 06:25
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: Craig Lechowicz on Sat, 10 November 2012 00:49
		Re: [GMCnet] Fluctuating Oil Gauge Readings By: g.winger on Sat, 10 November 2012 08:25

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