[DeTomaso] Oil Temperatures

[Joseph F. Byrd, Jr.]

Interesting thought I had...

For the heavy rotating equipment I use to work on, even thought their bearing babbitt melted at 400F, if the bearing metal got hotter than 275F was considered a failure from going plastic from the heat and deforming with the weight.  The bearing metal was hotter than the oil drain temperature.

I wonder how hard it would be to install crankshaft bearing metal TCs?

JFByrd

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf Of Jack DeRyke via DeTomaso
Sent: Wednesday, June 22, 2016 14:35 PM
To: steve at snclocks.com; demongusta at gmail.com
Cc: detomaso at server.detomasolist.com
Subject: Re: [DeTomaso] Oil Temperatures

FWIW, I ran across an article written by a major oil company some years ago. They had fully instrumented a modified 350 engine on a dyno, and found that the oil IN THE MAIN BEARINGS ran an average of 20F HOTTER than what was shown by pan sensor.s So 275F pan temp may mean nearly 300F in the bearings! This is in the 'char' temp range for regular oil, and even with synthetics, it means the oil is so badly thinned out as to vastly reduce its load carrying capacity. In this test, pan temps were the coolest oil temps found while main bearing temps were highest
....
J DeRyke