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Old 02-17-2020, 05:48 PM   #6
cadillac512
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Join Date: Apr 2019
Location: Kansas
Posts: 921
Default Re: flathead oil pressure?

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80psi on the starter w/plugs out and cold oil isn't necessarily bad. Warmed up fully you may see 50+ at speed and anywhere from 15-40 at idle depending on the bearing clearances,idle speed and oil used. If it has 80 w/hot oil I'd look into it...


Terry
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'41 Merc Town Sedan / 260" 8CM engine
'66 Fairlane four door / "warmed up" 302
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