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05-07-2011, 08:24 PM | #1 |
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Oil pressure
Sbc 434 new engine 20/50 brad penn oil , what should be the max oil pressure cold ? 80 psi seems high to me. Any thoughts
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05-07-2011, 11:52 PM | #2 |
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Re: Oil pressure
My small block ford has 80 psi cold at idle around 1200 rpm, drops to around 65 to 70 psi warm. I am running a Melling high volume pump and 10/30 oil, what is your bearing clearance? in my experience 80 psi is not uncommon to see with a cold engine and a high volume pump in a small block with .002 bearing clearance. I have heard it said that you want to see 10 psi per 1000 rpm. Mine goes through the traps in the 7000 rpm range with about 85 psi.
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05-08-2011, 08:03 AM | #3 |
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Re: Oil pressure
Headsup 113
If you build your motors with ~.002-.0025" bearing clearance like I do my big blocks and use 20-50 oil,80 psi cold is about normal. I always make sure that I throughly warm the oil before I rev it. Although I have never done it it's probably possible to blow out the oil filter gasket or o-ring if you rev it cold.
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Bill Baer 3391 SC, 339B SC, QR |
05-11-2011, 01:57 PM | #4 |
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Re: Oil pressure
That does not seems too high with 20/50 cold.....
d t |
05-11-2011, 09:19 PM | #5 |
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Re: Oil pressure
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