The cold idle pressure sounds real high to me. I
believe the relief spring is set at 70 psi or so. The
other numbers are within reason. What are you using
for PCV? Where is it leaking? Any rear seal kit?
Stick with the 20w-50.
--- Bryan Vandiver <Bryan.Vandiver@Eng.Sun.COM> wrote:
> Hi all,
>
> I'm still fighting a persistant oil leak on my newly
> rebuilt 1275 engine (all
> new bearings, hepolite pistons, and new 12g940 head,
> and kent md266 cam and
> lifters). I had installed one of the 'precision'
> super-flow oil pumps in the
> engine, and my normal starting oil presure is
> between 80-90 lbs, (warm
> california day) and at normal operating temperature
> (280 degrees), the pressure
> will drop to 40lbs at idle, and normally sits at
> about 60lbs at crusing speed.
> Is that normal???
> I notice that after I'm up to operating temperature,
> when I park the car for 15
> minutes or so, I leave a nice healthy puddle of oil
> (6 inches in diameter), and
> when I pull into my drive way, there is a nice trail
> of drips all the way into
> the garage.
> So far I haven't really been able to locate the
> source, and short of 'pulling
> the engine, I'm not sure what to do. I think I'll
> try to degrease the engine as
> best as I can with some soap and hot water, and
> check it over thoroughly to make
> sure all the oil has been cleaned off, and then
> start and run it for a few
> minutes, and see if any oil seeps out. I think I
> also try using a 'thinner' oil
> (10w-40, or 5w-30) to see if that reduces the
> pressure.
> Other than the persistant leak, the engine seems to
> be running really strong,
> and starts very easily.
>
> BTW - I'm using catrol GTx 20w-50, and a 'spin-on'
> fram oil filter
>
> Regards,
> Bryan Vandiver (59-bugeye)
> San Jose, CA
>
>
=====
Ron Soave
"Drive It Like You Stole It" - WST, TT
1960 Bugeye
1972 BGT
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