> Is this about right?
Sounds good to me.
> Are there any oil passageways that I missed?
The all-important ones through the crankshaft, from main to rod bearings. Also
a "squirter" hole in the factory rods as I recall, to supply additional oil to
the cylinder walls. The rod passages also lube the gudgeon(wrist) pins.
There's a spiral groove in the oil pump drive shaft that I think is supposed to
lube the shaft drive gears. There's a notch in the front cam bearing that lubes
the timing chain & sprockets. And a drain tube out of the rear main bearing, to
release oil back into the sump. The "metered" oil supply to the head also
lubricates the rocker pivots and valve stems.
Oh, and the filter head also dumps some of the oil back into the sump, when the
pressure exceeds the relief valve setting.
> 1. There is an intermediate chamber in the block "between" the filter's
> incoming passageway and the exit passageway. It corresponds with the
> middle hole on the filter. What is this for? Some sort of pressure
> relief space?
That would be the passage back to the sump, I believe. The three passages are
oil from the pump, oil to the gallery, oil to the sump.
> 2. Is the oil gallery one long continuous tube from the front to the
> rear of the block?
I believe so. I think it was originally drilled, and then aluminum plugs poured
in to cap the ends.
> Mine seemed to be divided at the dizzy "arterial".
I could be wrong, but my memory is that the oil pump/dizzy drive shaft runs
through the middle of the gallery. There is clearance around the shaft though,
for oil to flow to the front.
> I looked for resources on the Internet that detail the oil circulation
> and found none. Do anyone on the list know of any?
Here's a couple pages from the TR2-3 factory workshop manual that might help.
The only difference is that the TR2-early TR3 used a bypass type oil filter,
while later TR3-4A used a full flow type.
Randall
[demime 1.01d removed an attachment of type application/pdf which had a name of
TR2-3 oil circulation from BENTLEYTR23.pdf]
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