Roger,
Your comment about replacing the bottom end bearings in four hours caught
my attention. Which car are you referring to? I recently acquired a
1960 TR3A with low oil pressure when hot, and have been considering doing
the bottom end bearings this winter.
I have not had time to check the pressure setting on the pump/blowoff to
insure it is set correctly, as the highest pressure I read when cold is
60 psi. I suspect It should read higher than that cold. Any help would
be appreciated. Thanks
Jack Brooks
Hillsdale, New Jersey
1960 TR3-A TS69032L
'74 Norton Commando Roadster
On Sat, 2 Nov 08:39:27 1996 rgb@exact.com writes:
>>If all this extra oil is being pumped up to the rockers, does this
>mean
>>there is less oil getting to the crank? Just a dumb question.
>
>Just so we don't re-invent the wheel, while the oil feed kit can fix
>a few odd problems, the engines ran fine when new, i.e. plenty of
>rocker oil...
>
>When they age, the idle oil pressure drops, i.e. less than 20 psi
>at 1,000 rpm after a hot run. What you see is excessive rocker arm
>wear
>from lack of oil getting up there. The oil kit fixes the symptom...
>
>Pulling the oil pan and replacing the bearings on the rods and crank
>is
>a 4 hour job. This restores the oil pressure and you'll see plenty of
>oil back up to the rockers. This fixes the problem...
>
>My oil consumption fell by 50% with the new bearings, I suspect oil
>was blasting all over the lower cylinder walls from the excessive
>bearing gap, not to mention any of it getting up to the rockers.
>
>The philips screw holding the rocker shaft positions the entry hole
>to the oil feed from the head, this shaft is hollow and can also
>fill up with gunk... so there are more reasons, the bearing
>replacement
>won't fix all of them, but 9 out of 10 is my guess...
>
>--
>-----------------------------------------------------------
>Roger G. Bolick, rgb@exact.com, (512) 794-9567, FAX 345-2879
>
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