Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
H.G.P.'s Avatar
 
Join Date: Apr 2002
Posts: 1,492
What technically is the oil pressure gauge reading on the dash?

Is this total pressure for the entire crankcase only ?, How about peripherals such as cam towers, things like oil filter, breather hose, lubrication into the timing chains, etc.,?

Thanks anyone.

__________________
1969 911 E Coupe
"Little Bull" "Horse"
"H." Heart, "G." Gears, and "P" the Porsche
Old 10-17-2005, 11:19 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Back in the saddle again
 
masraum's Avatar
 
Join Date: Oct 2001
Location: Houston, TX
Posts: 36,949
HGP, sorry, can't answer your question, but aren't you the guy that with little to no exp pretty much rebuilt your engine because the heads were messed up?? Glad to see it's still running (I assume) and you are still workin' on it.

Good luck!
__________________
Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa SOLD 2004 - gone but not forgotten
Old 10-17-2005, 11:27 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
durn for'ner
 
livi's Avatar
 
Join Date: Feb 2005
Location: South of Sweden
Posts: 16,913
I think the oil pressure is measured with the oil pressure sensor gauge located on right top of engine and as a general guide should rise approx. 10 psi for every 1k rpm.

But maybe that didnīt answer your question.. ?
__________________
Markus
Resident Fluffer

Carrera '85
Old 10-17-2005, 11:29 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Wavey's Avatar
 
Join Date: Oct 2002
Location: St. Louis region
Posts: 3,142
It can only measure the psi at the point where the measurement is taken. The oil pressure is not going to be the same everywhere inside the engine. Why do you ask?
__________________
Deceased: Black '88 Carrera Coupe, Steve Wong and Russell Berry chips, Dansk premuffler, custom MK GT3-style muffler, Magnecores. Al Reed 7 & 8 X 16 Fuchs. Full Elephant Racing suspension, 21/28 T-bars, Turbo tierods, bump steer kit, Bilstein Sports, BK strut bar. Ruf bumpers, 935 mirrors, Carrera 3.0 tail, DasSport bar.
'11 BMW 328iX, '18 Nissan Frontier 4X4, '92 Acura NSX.
Old 10-17-2005, 11:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Somewhere in the Midwest
 
MotoSook's Avatar
 
Join Date: Oct 2001
Location: In the barn!
Posts: 12,498
The pressure is case pressure (internal passages, not the pressure in the air space that the crank spins in). There is some loss between the pump and the gauge, especially at higher flowrates, but it's marginal. You can assume that the gauge reading is what your bearings are seeing, with the exception of a blocked or abnormal restriction in any of the oil passages. The pressure at the cam spray bars is marginally less, but again, you can assume your gauge pressure is what is at the spray bars.

The filter pressure is much less as the oil is pumped by the scavenger pump, then goes to the cooler and back to the tank.

The hoses are under case (not oil passage) pressure.

Last edited by MotoSook; 10-17-2005 at 12:01 PM..
Old 10-17-2005, 11:59 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
durn for'ner
 
livi's Avatar
 
Join Date: Feb 2005
Location: South of Sweden
Posts: 16,913
Souk..... wow !

You guys just keep blowing me away with your knowledge.
__________________
Markus
Resident Fluffer

Carrera '85
Old 10-17-2005, 12:09 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
H.G.P.'s Avatar
 
Join Date: Apr 2002
Posts: 1,492
Quote:
Originally posted by Wavey
engine. Why do you ask?
I have nice readings........Souk answered my reasonings here.
__________________
1969 911 E Coupe
"Little Bull" "Horse"
"H." Heart, "G." Gears, and "P" the Porsche
Old 10-18-2005, 10:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
H.G.P.'s Avatar
 
Join Date: Apr 2002
Posts: 1,492
Quote:
Originally posted by masraum
HGP, sorry, can't answer your question, but aren't you the guy that with little to no exp pretty much rebuilt your engine because the heads were messed up?? Glad to see it's still running (I assume) and you are still workin' on it.

Good luck!
Now now, It's been almost a year since...."Spark plug broke..cracked" and heads "disintegrated"as Mr. Jeffrey Dooglous "fine winnin lad" might say. I'm preparing a one year follow-up thread.

__________________
1969 911 E Coupe
"Little Bull" "Horse"
"H." Heart, "G." Gears, and "P" the Porsche
Old 10-18-2005, 10:27 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 02:05 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.