Quote:
Originally Posted by hombres ruin
That’s what I was thinking as well.. why would one route it that way? Are there benefits at all? I have great oil pressure and it’s never been an issue. Where is it exactly going into?
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Kind of a long story.
Early design filters returned the oil to a special fitting / bolt that replaced the "normal" bolt at the left side of the fuel pump (to pump stand).
There were issues with higher oil consumption with this routing than normal. Then, the return was changed to a special fitting / bolt at the timing gear cover.
This had the advantage of bathing the gears in oil. Was that necessary? Who knows?
In '41, the return line was routed to an integral fitting near the front of the pan, on the left side.
In '42, no doubt for production economy, that unique fitting was eliminated and a newly designed boss that served to hold the dipstick tube, had a fitting as part of the boss.