Bill:
With what you tell me, It was fine until you did work on the engine. I
submit then that you go over the work that you did. It sounds lie the
problem lies in that. Look at your clearences again. It could also be that
you are sucking air, as I mentioned before. Whatever it is, it does not
sound right. I would not take a chance. Go thru it again, checking all
aspects.
Skip....................At 06:55 AM 2/20/98 +0000, Bill and Heather Putnam
wrote:
>> THere is a phenomena that occurs in these engines, in which oil pressure
>> does drop somewhat over about 3000 RPM. I dont know why. Normal running hot
>> oil pressure is 40-45 psi. I will never assemble any engine without using
>> plastigauge on ALL rod and main bearings. New is not always correct.
>> Did you rebush your rocker arms and install a new rocker shaft? This is a
>> major cause of low oil pressure.
>
>Skip,
>The rocker arms were rebushed and a new shaft installed 3,000 miles
>before the new crank etc. was installed (the previous owner had
>rebuilt the engine to stock, but I put in the new crank and Phoenix
>rods and the 6 qt. sump for racing. Before installing the new parts,
>the engine ran 60 psi hot at 4,000 rpm. This is why I am trying to
>find a source of the lower oil pressure-and since it will run up to
>60 at 2600 rpm hot now I don't think the reason is bearing clearances.
>Also, I'm concerned about bearing life when racing- 38 psi is not
>encouraging at full throttle and 5700 rpm.
>
>> Good luck:
>
>With anything old and British, this is always welcome.
>
>Bill
>
>
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