I recently purchases a sump spacer that is intended to increase the oil sump
capacity of a TR4 (and TR3, etc.) engine by a quart or so. It is basically an
aluminum shim about 1/2" thick and has a bolt hole pattern that follows the
spacing of the engine and oil pan bolts. See eBay (expired) item #2486077464
for an idea of the configuration. By the looks of it, this offers me the
opportunity to increase both my oil capacity and the potential for leakage. But
that's not the issue; it's part of the fun. Here, however, are the questions:
1 Do I need to make any changes to the windage tray, or baffle, in the
existing oil pan?
2 Do I need to extend the reach of the oil pump pickup to reach closer to
the bottom of the deeper sump?
I expect that the baffle in the pan is to reduce oil surge away from the pump
pickup in hard cornering, acceleration and braking. (Note that I don't
actually do much of any of these; I drive occasionally and conservatively.) The
baffle may also serve to reduce the whipping-up of oil in the sump caused by
crankshaft rotation. If I simply put the sump spacer in the engine-to-oil pan
sandwich, it will likely lower the baffle below the level of the oil. Will
this lead to excessive whipping-up of the oil? I did acquire a spare oil pan
experimental surgery if this proves necessary. I'm thinking that I could
remove the baffle and reattach it to the sump spacer to achieve its original
installed height -- if that seems like a desirable or required move.
As to the position of the oil pump pickup, I suppose that as long as it is
submerged, all will be well. That being said, however, is it possible,
desirable, and achievable to extend its pickup deeper into the sump?
Obviously this whole proposition is a nonessential exercise in "improving" a
TR4 that's already running fine. However I do have an oil pan leak of
considerable proportions. And since I have to remove the pan anyway, why not
job more pointlessly complex? At least, that's my thinking. All wisdom,
conjecture, speculation and information is welcome.
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