This forum is very helpful. I ordered 5 NAPA
58-299 pumps to take my caliper, divider plates,
another -3130 timing cover and we'll see what fits. Waiting for response on measurement location but I think what is meant is actual
cast vane height in the impeller only.
Ya know...I smell a business opportunity if someone would find (or develop) the correct fit
impeller and a modern 8 bolt divider plate like
the 11 bolt that would be sealed to the outlets
(block inlet passages). I have to question if
the two plate system evenly distributes the split
flow correctly to each bank. And especially when
the impeller exit flow is not inline with the 1st
divider (closest to pump casting).
Also, I have pondered whether a radiator flow
diffuser or baffling would more uniformly
utilize the core rows and area. Does the hotest
coolant get all the way across the top tank to
the far tubes and at the proper resident time in tube to acheive maximum heat exchange? Should
the ranks of rows (front to back) receive coolant
at flow velocity or temps to max heat extraction, etc. Ah thermodynamics 101.
Lest we forget that adjustable fuel mixture carb
on aircraft engines run cooler with more fuel
so jetting can be tweaked richer also.
Tests are being planned for different distributor
set-ups to actually learn empiracaly what is best
advance curve with same initial(6 deg)and max(34)
mechanical settings and same 20 degree vacuum on
the manifold (not carb port). To do this I will
imbed and locate a half dozen calibrated thermocouples in coolant, radiator, on manifold
RT/LFT water passage and on block to see delta
across this engine on each run.
So; new pump, new HiFlow 180 T/S, then testing at
3-4 recurves with good thermocouples to see
'whasup'.
Where is the silver bullet?
aerosmyth
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