Re: [T3] I GOT IT! but......

["David V.N." <rmcevoy1@twcny.rr.com>]

Oil pressure gauge coming right up!


David V.N
rmcevoy1@NOSPAMtwcny.rr.com
Remove NOSPAM to reply

----- Original Message ----- 
From: "Keith Park" <topnotch@nycap.rr.com>
To: <type3@vwtype3.org>
Sent: Friday, February 13, 2004 8:47 PM
Subject: Re: [T3] I GOT IT! but......


> OK, here are my thoughts, experience, and numbers on this.
>
> When an engine is new, it needs an oil thin enough to pass through the
close
> bearing clearances, and thin enough to keep the oil pump from putting out
> enough pressure to blow out the oil cooler or its seals (despite the
relief
> valve).  The reccomendation of breakin is 20W for the first 1000 miles and
> no higher than 10W30 after that.  A new, non full flow engine, stock,
should
> have 12-14PSI at idle when at temperature in the summer and 38-40 PSI at
> 70MPH on the highway on the hottest day  (here in the Northeast).  I found
> that full flow systems tend to reduce the hot idle pressure to about half
> the number above.
>
>     That being said, the idiot light senders tend to only show a light
when
> you have virtually no pressure, although the spec is something like
5-6PSI,
> so Id eather try a different sender or better yet put a pressure gauge on
> there even if its only one mounted on the cooler.
>
> If your getting a light at idle, with a good sender, on a new engine, with
> ANY oil greater than 20W, you have a real problem.  Think about it this
> way... if you have a light now, how will the engine ever last the 125Kmi
> that it should and still have sufficient oil pressure?  You may be able to
> keep the light out with a heavier oil but your just masking the problem...
> and if your losing pressure because some of the bearings are loose you may
> not get sufficient lubrication to the ones that are at spec with the thick
> oil when its cold.
>
>     The usual culprit is .030 under cranks, followed by cases that needed
an
> align bore and didnt get it or didnt get it done correctly.  Other causes
> that are much easier to do something about include cheap or worn oil
pumps,
> covers installed with too thick a gasket or with gasket sealer;  worn,
stuck
> or damaged oil pressure control or releif valves. Someone else may have
> another to chime in with too.
>
> I have 91K on my Stock Squareback engine, and it still idles hot at about
7
> PSI even after pulling the boat over the mountains in the summer... and
Ive
> never seen an oil light even at a 600RPM  idle.  So if your seeing it with
a
> new engine you need to find out why...
>
> Keith
>
>
> > Are you sure?I'd hate to make a fatal,(to the engine anyhow).
> > mistake at this point.From what I've read,opinions on oil
> > weight are all over the place.The reason I went with the 20w50
> > was because of the oil light being on STEADY after idling for
> > 20-25 minutes or so.Though this was occuring after playing with
> > timing,air bleed for idle and MPS tweaking and such.That also being
> > the cause for the SOS about oil cooling.
> >
> >
> > I just drove home from my mother's heated garage about 10 miles or so.
> > Stayed off the highway,hit lots of lights and stopsigns and did light
> > lugging up a
> > couple of not so steep hills.Got home and no light at all.Pulled the
> > dipstick
> > and oils not too hot or too cold.Maybe the carbon monoxide from the
engine
> > and
> > the salamander has finally left my bloodstream.
> >
> >
> > David V.N
> > rmcevoy1@NOSPAMtwcny.rr.com
> > Remove NOSPAM to reply
> >
> > ----- Original Message -----
> > From: "Keith Park" <topnotch@nycap.rr.com>
> > To: <type3@vwtype3.org>
> > Sent: Thursday, February 12, 2004 7:42 PM
> > Subject: Re: [T3] I GOT IT! but......
> >
> >
> > > >Watch those thick oils... this is WAY too thick for a new engine,
> > > especially in the winter.  The thick oil wont flow properly through
the
> > > tight new bearing clearances.
> > >
> > > Keith
> > >
> > >
> > >  >oil grade,
> > > >
> > > > 20w50(10w30 for break-in)
> > >
> > >
> > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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> > >
> > >
> >
> >
>
>
>