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
>