Hi James and others who thought with my oil pressure,
The outcome is as J Walker suggested: do more cranking.
So I did. And yes: slowly the pressure went up to about 50 (middle of the
gauge).
I did this with all spark plugs removed, in order to have the starter motor
and the battery much less stressed.
The reason why i cost so much time to initially build the pressure is, that
the engine and oil cooler had been removed, so the oil pump had to fill the
oil cooler first, before the real pressure became available at the
transducer. (it really is an electric gauge!)
A warning and advice from this experience:
1
When I started this the engine was at the correct oil level.
After the moment the pressure was to be seen at the gauge, the oil cooler is
filled and the oil level was dropped to the minimum. So I have put in
another liter into the engine.
So after reassembling an engine into a working order it is important to have
the oil level checked!
2
When busy as a not really long experienced technician, I really have had
good feeling to do things one at a time. Initially building the oil pressure
after reassembly just by the startermotor cranking and not by a running
engine is I think a good way and avoiding wear.
3
Before I started the restoration job I had the engine oil and the filter
renewed, so the engine really was clean inside! After more than 8 years
rotating the engine goes easy!
Thank you all for the help.
All gauges seem to work now, so next time I'll have to make the fule pump
alive again.
Cheers,
Hans
'71 BGT - just needing fuel
> -----Original Message-----
> From: James Nazarian Jr [SMTP:James.Nazarian@Colorado.EDU]
> Sent: Wednesday, August 18, 1999 7:35 PM
> To: Hans Duinhoven
> Cc: mgs@autox.team.net
> Subject: RE: How to check the oil pressure gauge
>
> I'll check my manual tonight. I know I have done this before, I just have
> to remember what I did.
>
> James Nazarian
> '71 B roadster
> '74 BGT bastardization with big aluminum heart :)
> '63 Buick 215 cubic inch 'heart'
>
> On Wed, 18 Aug 1999, Hans Duinhoven wrote:
>
> > Hi James,
> >
> > Have you heard any news how the gauge can be tested?
> > Temporarely (5 seconds max) grounding the other gauges to my opinion is
> not
> > really bad to do.
> > It forces the instrument though, but as the instrumnet works on the "hot
> > wire"principle, a short time short to ground does not create to much
> heat.
> >
> > The oil pressure gauge I assume works on a different principle, because
> if I
> > remember it well, the needle can move quickly unlike the temp. and fuel
> > gauge can and need to do so.
> > Oil pressure varie directly with the rev. speed of the engine.
> >
> > Have you go a wiring diagram showing the electrical setup of this gauge?
> >
> > TIA!
> >
> > Cheers,
> >
> > Hans
> >
> > '71 BGT definitively equipped with an electrical oil pressure gauge
> >
> >
> >
> > > -----Original Message-----
> > > From: James Nazarian Jr [SMTP:James.Nazarian@Colorado.EDU]
> > > Sent: Tuesday, August 17, 1999 12:16 AM
> > > To: mgs@autox.team.net
> > > Cc: Hans Duinhoven
> > > Subject: Re: How to check the oil pressure gauge
> > >
> > > Hans,
> > >
> > > The guage went electrical at some point between 66 and 71. The sender
> is
> > > located just below the engine id tag. It is a cylinder with a small
> oil
> > > pipe coming out of the rear into the block and the other side has a
> > > connector for a single wire that goes into the harness and directly to
> the
> > > oil guage. If memory serves me the wire is white with brown but I
> could
> > > be wrong. The sender and gauge work similarly to the temperature
> stuff,
> > > but I don't remember how exactly to test them, I think that if you
> ground
> > > the sender lead while it is connected to the gauge you will get one
> > > extreme and if you connect it to +12v then you will get the other.
> > > Someone please back me up here so I don't say something that will fry
> his
> > > oil gauge.
> > >
> > > James Nazarian
> > > '71 B roadster
> > > '74 BGT bastardization with big aluminum heart :)
> > > '63 Buick 215 cubic inch 'heart'
> > >
> > > On Mon, 16 Aug 1999, Skye Poier wrote:
> > >
> > > > Word on the street is that Hans Duinhoven said:
> > > > > how this circuit is wired? funny to see, that the oil
> pressure gauge
> > > > > in the
> > > > > wiring diagram only is connected to the dash instrument
> illumination
> > > > > circuit. (43)
> > > > > the diagram does not show any connection to the sender.
> > > >
> > > > Unless it changed between 1966 and 1971, the oil pressure gauge is
> > > controlled
> > > > by real live oil fed from a pipe that comes from the block just
> behind
> > > the
> > > > distributor.
> > > >
> > > > Skye
> > > >
> > > > --
> > > > 1966 MGB The MGB Experience __,__\__ Safety
> Fast!
> > > > GHN3L-70307 http://www.mgb.bc.ca/ (_o____o_) MGOFR 1.375
> > > >
> >
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