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Date:         Thu, 9 Jul 2015 21:00:56 -0500
Reply-To:     John Rodgers <jrodgers113@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Rodgers <jrodgers113@GMAIL.COM>
Subject:      Re: Oil pressure
Comments: To: Jeff Schwaia <vw.doka@gmail.com>, Josh Weber <jmweberga@gmail.com>
In-Reply-To:  <006201d0ba9a$88c47250$9a4d56f0$@gmail.com>
Content-Type: text/plain; charset=UTF-8

I have two engines to deal with. On the new engine, I think I will go wth the sandwich set up and two guages - oil temp and pressure.

On the old engine - 150, 000 miles - I will go with the gauge that gets pressure readings off the cam.

John On Jul 9, 2015 5:57 PM, "Jeff Schwaia" <vw.doka@gmail.com> wrote:

> Actually, the only difference between the two oil pressure locations is > that one is before the oil filter, and the other is after the oil filter. > > Cheers, > > Jeff > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf > Of Stuart MacMillan > Sent: Thursday, July 09, 2015 3:50 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Oil pressure > > I prefer the cam location simply because knowing the pressure there is the > most critical. Oil pressure leaks down at the bearings, and this measures > it at the bearings. > > Full oil pump pressure is delivered to the filter/sandwich plate, so you > will likely see a somewhat higher pressure there as the engine wears, as > compared to the bearings, but probably not much higher. > > The important thing is to watch the long term trend of the pressure drop, > which is inevitable. When you get below 8 psi at hot idle and 20 at 3000, > start saving for a new engine. Six psi at idle and you are on borrowed > time. BTDT-my experience with a used 2.1 engine: > > OIL PRESSURE: 8 psi at idle, 24 psi cruising when installed. Over the next > 10,000 miles pressure steadily dropped to 4 psi idle, 12-15 psi cruising. > At the end of the 3000 mile trip idle pressure was zero (red light came > on), cruising 8 psi. Blew up at 65 mph just 65 miles from home, still > running strong! > > I'm hoping for one more year from my current 1.9 with the same initial oil > pressure. > > Stuart > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf > Of John Rodgers > Sent: Thursday, July 09, 2015 2:25 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Oil pressure > > I've got two oil pressure guage setups. One takes pressure from the > pressure switch that monitors oil pressure at the cam. No oil temps. It has > a pressure guage only. The other is a sandwich device that takes oil > pressure and temperature between the oil filter and oil cooler. Of these > two, which would be best. Opinions? Why? > > Thanks, > > John >


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