[TR] Oil Pressure Loss

[david brady]

Thanks Tony, that puts that to rest. It's been too many years to know
whether my engine builder extended the pump intake. He was very
conscientious so I wouldn't doubt that he did. When I mentioned that I
had oil pan baffles he insisted that I bring them in so he could weld
them in place. Nonetheless, the stock four quart inlet depth is
sufficient to save my butt.

It was 20 years ago when I had this engine built and I did do it with
the idea of campaigning the car. Well, marriage and kids quickly swept
that idea aside. I made some mods to the car which probably detract from
its value, but boy is it fun to drive! :)

BTW, a winter project that I have scheduled is installation of a Good
Parts crankshaft viscous damper. This I'm looking very much forward t.

David
'68 TR250
CD8124L


On 12/26/2016 9:25 PM, Tony Drews wrote:
> The pickup is still submerged with 4 quarts in the sump / in circulation.
> 
> Tony
> 
> At 02:44 PM 12/26/2016, david brady wrote:
>> Wow, this group is certainly experienced with dumping oil out of live
>> engines! I understand it was common practice to do hot engine oil
>> changes on irrigation engines. It was to cumbersome to take the engine's
>> completely out of service which would require re-priming to get the
>> pumps running again; instead, they brought the engines to a slow idle,
>> opened a ball valve to drain the sump, spun on a new filter, and
>> refilled the sump, then the engine was cranked up to full load.
>>
>> I had my self pretty much convinced that even though I dumped three
>> quarts out the gauge orifice I never starved the bearings of oil flow.
>> Now I'm not so sure. I have an aluminum sump which holds 7 quarts. I
>> pumped out three, so now the question is, how deep does the oil pump
>> suction inlet go into the sump pan? IOWs, did the oil geyser stop
>> because I shut down the engine or did it stop because the oil pump
>> started sucking air after pumping three quarts?
>>
>> David
>> '68 TR250,
>> CD8124L
>>
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> 
> 
>