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Old 04-18-2025, 07:11 PM   #4
tcom
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Join Date: Apr 2025
Location: Behind the redwood ccurtain NorCal
Posts: 32
Default Re: Flathead pre-oiler - good, bad and the ugly?

Good evening,

Beautiful job o the pre oiler.

But was it necessary? Using good quality assembly lube pretty much eliminates the need for pigging the block,especially if you turn it over til it makes oil pressure. But since you have put in the time to build the pre oiler use it. THe filter will pick up micron sized crud. However what happens if there is enough crud to overwhelm the filter? I'd run a few quarts of Marvel or ATF through it if you haven't done so already to flush it. THen change filters and off you go.

If you paid attention to detail like you did on the oiler when building the engine you should not have a problem. Those engines in stock form are pretty under stressed. You're not building a 650 to 750hp Ford V8 designed to go five hundred miles in the 100* plus heat around Talladega or Daytona at 8000 plus RPM.

My favorite assembly lube is Permatex 81850.

tony
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