Date:         Tue, 5 Sep 2017 02:01:35 -0400
Reply-To:     Gabriel Hourtouat <ghourtouat@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Gabriel Hourtouat <ghourtouat@GMAIL.COM>
Subject:      Re: Oil pressure light and buzzer
In-Reply-To:  <007701d32411$2d179300$8746b900$@gmail.com>
Content-Type: text/plain; charset="UTF-8"

Reading the Van Cafe installation notes for their pressure gauge kit...
Two observations:
-When the engine is cold, I have the oil light on below 2000rpm and I have
the oil light on above 2000rpm.  Oil lights all over.  (But no buzzer.)
-As the engine warms up, the alarm excursions diminish in number, frequency
and severity.

That means I have alarms on two different senders.  I must face reality:  I
have low oil pressure.

But if it gets better with increased temps:
-Could it be a clogged oil filter that does better with a less viscous (ie.
warmer) oil?
-Could it be a failing oil pump that has improved clearances as at
increased temperature?




On Sat, Sep 2, 2017 at 1:30 PM, Stuart MacMillan <stuartmacm@gmail.com>
wrote:

> Right, thanks for that calculation! My tach isn't calibrated to a new 7000
> rpm face, and this info will allow me to do that.
>
> My owner's manual says the green zone is "where engine makes the most
> favorable torque," which is what you basically said, and pretty much the
> same as best mileage.
>
> Stuart
>
> -----Original Message-----
> From: Dennis Haynes [mailto:d23haynes57@hotmail.com]
> Sent: Saturday, September 02, 2017 7:32 AM
> To: Stuart MacMillan; vanagon@GERRY.VANAGON.COM
> Subject: RE: Oil pressure light and buzzer
>
> I think the green area on the tachometer represents the ideal operating
> range for the engine. Below the green it does not make any real power and
> attempts to accelerate just make noise. With oil temperature monitoring
> over many years and a number of different Vanagons going over 4,200 rpm for
> extended periods is not good for oil temperature control. Yes the engine
> can tolerate excursions to the rev limiter but 5,000 rpm operation for a
> long duration without some additional oil cooling.
>
> Your Engine RPM to speed does not seem right. That is not much different
> then stock. Doing some math stock tires run about 830 revolutions per mile
> so 830 X 3.27 should be around 2,714 rpm at 60 mph. Torque converter slip
> should be no more than 3% so add 80 RPM for that.
> So with the above assumptions you should be seeing ~3,260 rpms at 70 mph.
> My guess is you do not really have the gear set you think or your torque
> converter is shot. Yes they do fail.
>
> Dennis
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Stuart MacMillan
> Sent: Friday, September 1, 2017 3:22 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Oil pressure light and buzzer
>
> The green area is simply the best mileage zone, nothing more. Remember,
> these were built in the '80s when the EPA mileage numbers were first on the
> sticker, and they were a selling feature.
>
> FWIW, with my Subaru 2.2 and the 3.27 Freeway Flyer R&P 70 is about 4000
> rpm, and very comfortable.  The engine breathes so much better that it
> never feels stressed at high rpms, and is quieter at speed. It has a red
> line of 6000 rpm, which I don't plan on hitting.
>
> Also, oil pressure is 15 psi at idle, and 50+ at 70 mph at temp with the
> dino 10w40 oil I'm using for break in.
>
> It's so much more fun to drive!
>
> (Sorry, Friday bragging!)
>
> Stuart
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Jeff Palmer
> Sent: Thursday, August 31, 2017 9:57 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Oil pressure light and buzzer
>
> Goodness.  That’s out of the green, and into the ‘no colour zone’ if not
> into the red!  Never understood why there was an uncoloured area in between
> the two.
> Jeff
>
> > On Aug 31, 2017, at 11:55 PM, David Beierl <dbeierl@attglobal.net>
> wrote:
> >
> > Around 4650 at 85 mph.  The occasional accidental wander up to 90 would
> be 4900 and change.  I never tried for the official 96 mph top speed.
> >
> > Yrs,
> > d
> >
> > On Fri, Sep 1, 2017 at 12:52 AM, Jeff Palmer <w.jeff.palmer@icloud.com
> <mailto:w.jeff.palmer@icloud.com>> wrote:
> > But seriously didn’t you used to hit 85 on the freeway?  What kind of
> RPM were you reaching?
> > Jeff
>