Fred,
I had a 1098cc Midget that did the same thing , but
I only had 5-10 PSI at idle "hot" . I tried an oil cooler. It helped
very little . I then rebuilt the engine
with new mains, rod and cam bearings. Still it had
low oil pressure. I was 16 yrs old at the time (20yrs ago) and it never
occurred to me to change the oil pump. I did check that the oil pressure
relief valve
was properly seating and even tried shimming the spring . All that did
was to make the cold start up oil
pressure ~90PSI . Hot idle oil pressure had no improvment.I finally gave
up and just drove the car.
60,000 miles latter I burned an exhaust valve (leaky
manifold) At the same time as I had a valve job done
I dropped the oil pan and checked the bearings,all
looked good. I put it back together and drove it for several more yrs.
before finally selling it.The car
probably still has low oil pressure :)
Mark Hanna
AN5L/13731
> -----Original Message-----
> From: Fred Krampits [SMTP:fred@hprrc725.rose.hp.com]
> Sent: Friday, March 27, 1998 1:28 PM
> To: spridgets@autox.team.net
> Cc: mgs@autox.team.net
> Subject: Oil Pressure Concerns
>
> I have a midget MK I 1098CG. When I start the car cold the oil
> pressure
> immeadiately starts at 60 psi. As the car heats it lowers the
> pressure,
> fully warmed up at idle the oil pressure is either just above or just
> below 20 psi. At 3500 rpm it is around 30-35 psi. This has me very
> concerned about any long trips in the car, 25 miles or longer. The
> odometer says 99,470 (however I have another one at home that says
> 77,000), so mileage is really unknown. I leak oil from the rear of the
> motor but have no blue smoke in exhaust. In my readings I see mention
> of
> an oil cooler helping, however the 1275 motor is the one mostly
> mentioned as needing one. Could a oil cooler help me, I see VB has
> them
> listed, also I see that an oil thermostat is recommended so the oil
> doesn't get too cold. Any ideas ?
>
> Fred
> 1963 Midget MK I 1098CG
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