Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if it’s even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess it’s a “Pantera-thing” to drive down the road in “readiness” for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimited” - I love it. I get so “educated by The List. It’s like asking the workshop manual questions, and getting answers. #4348
Good morning Jack. Years ago my dad explained to me that oil is the primary heat transfer agent in an engine. It is the closest to the things that get hot. OK - the heads are filled with water, which gets pretty hot, but the bearings, the pistons, the rings all get cooled with water. Just bought a SPC Daytona - with a 351 Dart block bored and stroked to 427. It came with an oil temperature gauge. Yup, oil runs 20 or 30 degrees F hotter. The Daytona also has an oil-cooler built into the radiator. I also have a '70 XKE. I added a factory oil cooler that I was lucky enough to snap up when a Jag aftermarket outfit found the cooler at a dealership they bought out. Overall - makes the engine just plain bulletproof when it comes to cooling. So, sounds like I am a big fan of oil coolers, eh? But, really, no. Modern multi-vis oils significantly extend the effectiveness of oils - I would, and do watch the water temperature in our Pantera, but honestly, I give no thoughts to the oil temperature. But then, as with you, I am probably on the old-man side of my driving. I don't track my cars but I do put miles on them. Thoughts of an old man contemplating cleaning up a car for a show tonight. Stephen Nelson -----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack Donahue Sent: Wednesday, June 22, 2016 8:16 AM To: detomaso@server.detomasolist.com Cc: detomaso@server.detomasolist.com Subject: [DeTomaso] Oil Temperatures Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if it’s even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess it’s a “Pantera-thing” to drive down the road in “readiness” for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimited” - I love it. I get so “educated by The List. It’s like asking the workshop manual questions, and getting answers. #4348 _______________________________________________ Detomaso Forum NO LONGER Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.
Stephan - thanks for more input, but did you mean the bearings are cooled with oil? I had an XKE - 64 - it ran a wee bit hot - needed an oil cooler. Age - the great equalizer. We fight it, but it always wins out - still looking for that watch/clock that runs CCW. But then again, I’m glad to have made it this far, unfortunately, a lot don’t. Jack #4348
On Jun 22, 2016, at 8:51 AM, Stephen <steve@snclocks.com> wrote:
Good morning Jack. Years ago my dad explained to me that oil is the primary heat transfer agent in an engine. It is the closest to the things that get hot. OK - the heads are filled with water, which gets pretty hot, but the bearings, the pistons, the rings all get cooled with water.
Just bought a SPC Daytona - with a 351 Dart block bored and stroked to 427. It came with an oil temperature gauge. Yup, oil runs 20 or 30 degrees F hotter. The Daytona also has an oil-cooler built into the radiator.
I also have a '70 XKE. I added a factory oil cooler that I was lucky enough to snap up when a Jag aftermarket outfit found the cooler at a dealership they bought out. Overall - makes the engine just plain bulletproof when it comes to cooling.
So, sounds like I am a big fan of oil coolers, eh? But, really, no. Modern multi-vis oils significantly extend the effectiveness of oils - I would, and do watch the water temperature in our Pantera, but honestly, I give no thoughts to the oil temperature. But then, as with you, I am probably on the old-man side of my driving. I don't track my cars but I do put miles on them.
Thoughts of an old man contemplating cleaning up a car for a show tonight.
Stephen Nelson
-----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack Donahue Sent: Wednesday, June 22, 2016 8:16 AM To: detomaso@server.detomasolist.com Cc: detomaso@server.detomasolist.com Subject: [DeTomaso] Oil Temperatures
Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if it’s even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess it’s a “Pantera-thing” to drive down the road in “readiness” for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimited” - I love it. I get so “educated by The List. It’s like asking the workshop manual questions, and getting answers. #4348 _______________________________________________
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Jack - yup, to my mind, the oil flows through the gaps in the bearings and helps to remove heat - as in the heat generated by the bearings doing their thing - keeping pieces of metal from making contact. Without the flow the bearings would get pretty toasty. Stephen Nelson -----Original Message----- From: Jack Donahue [mailto:demongusta@gmail.com] Sent: Wednesday, June 22, 2016 9:03 AM To: Stephen <steve@snclocks.com> Cc: detomaso@server.detomasolist.com Subject: Re: [DeTomaso] Oil Temperatures Stephan - thanks for more input, but did you mean the bearings are cooled with oil? I had an XKE - 64 - it ran a wee bit hot - needed an oil cooler. Age - the great equalizer. We fight it, but it always wins out - still looking for that watch/clock that runs CCW. But then again, I’m glad to have made it this far, unfortunately, a lot don’t. Jack #4348
On Jun 22, 2016, at 8:51 AM, Stephen <steve@snclocks.com> wrote:
Good morning Jack. Years ago my dad explained to me that oil is the primary heat transfer agent in an engine. It is the closest to the things that get hot. OK - the heads are filled with water, which gets pretty hot, but the bearings, the pistons, the rings all get cooled with water.
Just bought a SPC Daytona - with a 351 Dart block bored and stroked to 427. It came with an oil temperature gauge. Yup, oil runs 20 or 30 degrees F hotter. The Daytona also has an oil-cooler built into the radiator.
I also have a '70 XKE. I added a factory oil cooler that I was lucky enough to snap up when a Jag aftermarket outfit found the cooler at a dealership they bought out. Overall - makes the engine just plain bulletproof when it comes to cooling.
So, sounds like I am a big fan of oil coolers, eh? But, really, no. Modern multi-vis oils significantly extend the effectiveness of oils - I would, and do watch the water temperature in our Pantera, but honestly, I give no thoughts to the oil temperature. But then, as with you, I am probably on the old-man side of my driving. I don't track my cars but I do put miles on them.
Thoughts of an old man contemplating cleaning up a car for a show tonight.
Stephen Nelson
-----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack Donahue Sent: Wednesday, June 22, 2016 8:16 AM To: detomaso@server.detomasolist.com Cc: detomaso@server.detomasolist.com Subject: [DeTomaso] Oil Temperatures
Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if it’s even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess it’s a “Pantera-thing” to drive down the road in “readiness” for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimited” - I love it. I get so “educated by The List. It’s like asking the workshop manual questions, and getting answers. #4348 _______________________________________________
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It's been a few years, but been there done that. I would recognize that bluish burnt look anywhere.
On Jun 22, 2016, at 10:48 AM, Stephen <steve@snclocks.com> wrote:
Jack - yup, to my mind, the oil flows through the gaps in the bearings and helps to remove heat - as in the heat generated by the bearings doing their thing - keeping pieces of metal from making contact. Without the flow the bearings would get pretty toasty.
Stephen Nelson
-----Original Message----- From: Jack Donahue [mailto:demongusta@gmail.com] Sent: Wednesday, June 22, 2016 9:03 AM To: Stephen <steve@snclocks.com> Cc: detomaso@server.detomasolist.com Subject: Re: [DeTomaso] Oil Temperatures
Stephan - thanks for more input, but did you mean the bearings are cooled with oil? I had an XKE - 64 - it ran a wee bit hot - needed an oil cooler. Age - the great equalizer. We fight it, but it always wins out - still looking for that watch/clock that runs CCW. But then again, I’m glad to have made it this far, unfortunately, a lot don’t. Jack #4348
On Jun 22, 2016, at 8:51 AM, Stephen <steve@snclocks.com> wrote:
Good morning Jack. Years ago my dad explained to me that oil is the primary heat transfer agent in an engine. It is the closest to the things that get hot. OK - the heads are filled with water, which gets pretty hot, but the bearings, the pistons, the rings all get cooled with water.
Just bought a SPC Daytona - with a 351 Dart block bored and stroked to 427. It came with an oil temperature gauge. Yup, oil runs 20 or 30 degrees F hotter. The Daytona also has an oil-cooler built into the radiator.
I also have a '70 XKE. I added a factory oil cooler that I was lucky enough to snap up when a Jag aftermarket outfit found the cooler at a dealership they bought out. Overall - makes the engine just plain bulletproof when it comes to cooling.
So, sounds like I am a big fan of oil coolers, eh? But, really, no. Modern multi-vis oils significantly extend the effectiveness of oils - I would, and do watch the water temperature in our Pantera, but honestly, I give no thoughts to the oil temperature. But then, as with you, I am probably on the old-man side of my driving. I don't track my cars but I do put miles on them.
Thoughts of an old man contemplating cleaning up a car for a show tonight.
Stephen Nelson
-----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack Donahue Sent: Wednesday, June 22, 2016 8:16 AM To: detomaso@server.detomasolist.com Cc: detomaso@server.detomasolist.com Subject: [DeTomaso] Oil Temperatures
Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if it’s even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess it’s a “Pantera-thing” to drive down the road in “readiness” for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimited” - I love it. I get so “educated by The List. It’s like asking the workshop manual questions, and getting answers. #4348 _______________________________________________
Detomaso Forum NO LONGER Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso
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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 10 yrs ago, I installed a water-to-oil tubular Laminova used by Ford for heavy-duty applications. This is NOT the small thing that fits between the block & filter. It can be disassembled for cleaning. It substitutes for 13" of one of the big water tubes under the Pantera floor so oil lines are short and no extra water lines are needed. Ground clearance is not reduced. The Ford/Laminova has a front and a back- don't plumb it in backward or efficiency suffers. Fluidyne makes a welded rectangular water-to-oil cooler, but it is a little more bulky and is welder into one piece, making cleaning near-impossible if you lose an engine to any cause. Slver State racers found that both coolers will take about 15-18F off your worst-case loaded oil temp. I also added a MOCAL oil thermostat to ensure the cooler does NOT kick in during cool winter temps. The only other thing necessary is AT LEAST dash-8 areoquip oil lines for adequate oil flow; dash-10 is better. Note that ANY plastic parts such as check valves etc in lines, coolers or thermostats will melt at 275F & above. To my knowlege, no one has instrumented an ALUMINUM Fluidyne 10-qt oil pan but I wouldn't expect more than a 5F oil temp drop-if that. J DeRyke -----Original Message----- From: Stephen <steve@snclocks.com> To: 'Jack Donahue' <demongusta@gmail.com> Cc: detomaso <detomaso@server.detomasolist.com> Sent: Wed, Jun 22, 2016 10:49 am Subject: Re: [DeTomaso] Oil Temperatures Jack - yup, to my mind, the oil flows through the gaps in the bearings and helps to remove heat - as in the heat generated by the bearings doing their thing - keeping pieces of metal from making contact. Without the flow the bearings would get pretty toasty.Stephen Nelson-----Original Message-----From: Jack Donahue [mailto:demongusta@gmail.com] Sent: Wednesday, June 22, 2016 9:03 AMTo: Stephen <steve@snclocks.com>Cc: detomaso@server.detomasolist.comSubject: Re: [DeTomaso] Oil TemperaturesStephan - thanks for more input, but did you mean the bearings are cooled with oil? I had an XKE - 64 - it ran a wee bit hot - needed an oil cooler. Age - the great equalizer. We fight it, but it always wins out - still looking for that watch/clock that runs CCW. But then again, I’m glad to have made it this far, unfortunately, a lot don’t. Jack#4348> On Jun 22, 2016, at 8:51 AM, Stephen <steve@snclocks.com> wrote:> > Good morning Jack. Years ago my dad explained to me that oil is the primary heat transfer agent in an engine. It is the closest to the things that get hot. OK - the heads are filled with water, which gets pretty hot, but the bearings, the pistons, the rings all get cooled with water.> > Just bought a SPC Daytona - with a 351 Dart block bored and stroked to 427. It came with an oil temperature gauge. Yup, oil runs 20 or 30 degrees F hotter. The Daytona also has an oil-cooler built into the radiator. > > I also have a '70 XKE. I added a factory oil cooler that I was lucky enough to snap up when a Jag aftermarket outfit found the cooler at a dealership they bought out. Overall - makes the engine just plain bulletproof when it comes to cooling.> > So, sounds like I am a big fan of oil coolers, eh? But, really, no. Modern multi-vis oils significantly extend the effectiveness of oils - I would, and do watch the water temperature in our Pantera, but honestly, I give no thoughts to the oil temperature. But then, as with you, I am probably on the old-man side of my driving. I don't track my cars but I do put miles on them.> > Thoughts of an old man contemplating cleaning up a car for a show tonight.> > Stephen Nelson> > > -----Original Message-----> From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack Donahue> Sent: Wednesday, June 22, 2016 8:16 AM> To: detomaso@server.detomasolist.com> Cc: detomaso@server.detomasolist.com> Subject: [DeTomaso] Oil Temperatures> > Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if it’s even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess it’s a “Pantera-thing” to drive down the road in “readiness” for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimited” - I love it. I get so “educated by The List. It’s like asking the workshop manual questions, and getting answers. > #4348> _______________________________________________> > > Detomaso Forum NO LONGER Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso@server.detomasolist.com http://server.detomasolist.com/mailman/listinfo/detomaso> > To manage your subscription (change email address, unsubscribe, etc.) use the links above.> > Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.> _______________________________________________Detomaso Forum NO LONGER Managed by POCAPosted emails must not exceed 1.5 MegabytesDeTomaso mailing listDeTomaso@server.detomasolist.comhttp://server.detomasolist.com/mailman/listinfo/detomasoTo manage your subscription (change email address, unsubscribe, etc.) use the links above.Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. 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 10 yrs ago, I installed a water-to-oil tubular Laminova used by Ford for heavy-duty applications. This is NOT the small thing that fits between the block & filter. It can be disassembled for cleaning. It substitutes for 13" of one of the big water tubes under the Pantera floor so oil lines are short and no extra water lines are needed. Ground clearance is not reduced. The Ford/Laminova has a front and a back- don't plumb it in backward or efficiency suffers. Fluidyne makes a welded rectangular water-to-oil cooler, but it is a little more bulky and is welder into one piece, making cleaning near-impossible if you lose an engine to any cause. Slver State racers found that both coolers will take about 15-18F off your worst-case loaded oil temp. I also added a MOCAL oil thermostat to ensure the cooler does NOT kick in during cool winter temps. The only other thing necessary is AT LEAST dash-8 areoquip oil lines for adequate oil flow; dash-10 is better. Note that ANY plastic parts such as check valves etc in lines, coolers or thermostats will melt at 275F & above. To my knowlege, no one has instrumented an ALUMINUM Fluidyne 10-qt oil pan but I wouldn't expect more than a 5F oil temp drop-if that. J DeRyke -----Original Message----- From: Stephen <steve@snclocks.com> To: 'Jack Donahue' <demongusta@gmail.com> Cc: detomaso <detomaso@server.detomasolist.com> Sent: Wed, Jun 22, 2016 10:49 am Subject: Re: [DeTomaso] Oil Temperatures Jack - yup, to my mind, the oil flows through the gaps in the bearings and helps to remove heat - as in the heat generated by the bearings doing their thing - keeping pieces of metal from making contact. Without the flow the bearings would get pretty toasty. Stephen Nelson -----Original Message----- From: Jack Donahue [[1]mailto:demongusta@gmail.com] Sent: Wednesday, June 22, 2016 9:03 AM To: Stephen <[2]steve@snclocks.com> Cc: [3]detomaso@server.detomasolist.com Subject: Re: [DeTomaso] Oil Temperatures Stephan - thanks for more input, but did you mean the bearings are cooled with oil? I had an XKE - 64 - it ran a wee bit hot - needed an oil cooler. Age - the great equalizer. We fight it, but it always wins out - still looking for that watch/clock that runs CCW. But then again, Iam glad to have made it this far, unfortunately, a lot donat. Jack #4348 > On Jun 22, 2016, at 8:51 AM, Stephen <[4]steve@snclocks.com> wrote: > > Good morning Jack. Years ago my dad explained to me that oil is the primary heat transfer agent in an engine. It is the closest to the things that get hot. OK - the heads are filled with water, which gets pretty hot, but the bearings, the pistons, the rings all get cooled with water. > > Just bought a SPC Daytona - with a 351 Dart block bored and stroked to 427. It came with an oil temperature gauge. Yup, oil runs 20 or 30 degrees F hotter. The Daytona also has an oil-cooler built into the radiator. > > I also have a '70 XKE. I added a factory oil cooler that I was lucky enough to snap up when a Jag aftermarket outfit found the cooler at a dealership they bought out. Overall - makes the engine just plain bulletproof when it comes to cooling. > > So, sounds like I am a big fan of oil coolers, eh? But, really, no. Modern multi-vis oils significantly extend the effectiveness of oils - I would, and do watch the water temperature in our Pantera, but honestly, I give no thoughts to the oil temperature. But then, as with you, I am probably on the old-man side of my driving. I don't track my cars but I do put miles on them. > > Thoughts of an old man contemplating cleaning up a car for a show tonight. > > Stephen Nelson > > > -----Original Message----- > From: DeTomaso [[5]mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack Donahue > Sent: Wednesday, June 22, 2016 8:16 AM > To: [6]detomaso@server.detomasolist.com > Cc: [7]detomaso@server.detomasolist.com > Subject: [DeTomaso] Oil Temperatures > > Just wanted to thank everyone for their input on oil temperatures. The List and the participants are unique and indispensable, in my book. The thoughts and ideas are just great. In my case, the first thing I need is an oil temp gauge to see if itas even an issue - so logical. I judge from my driving habits (old-man-style driving) I may not have to worry about it. But I do. I guess itas a aPantera-thinga to drive down the road in areadinessa for the next issue, because it WILL be there - Just a matter of time. "Upgrading Unlimiteda - I love it. I get so aeducated by The List. Itas like asking the workshop manual questions, and getting answers. > #4348 > _______________________________________________ > > > Detomaso Forum NO LONGER Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list [8]DeTomaso@server.detomasolist.com [9]http://server.detomasolist.com/mailman/listinfo/detomaso > > To manage your subscription (change email address, unsubscribe, etc.) use the links above. > > Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. > _______________________________________________ Detomaso Forum NO LONGER Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list [10]DeTomaso@server.detomasolist.com [11]http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. mailto:demongusta@gmail.com? 2. mailto:steve@snclocks.com 3. mailto:detomaso@server.detomasolist.com 4. mailto:steve@snclocks.com 5. mailto:detomaso-bounces@server.detomasolist.com? 6. mailto:detomaso@server.detomasolist.com 7. mailto:detomaso@server.detomasolist.com 8. mailto:DeTomaso@server.detomasolist.com 9. http://server.detomasolist.com/mailman/listinfo/detomaso 10. mailto:DeTomaso@server.detomasolist.com 11. http://server.detomasolist.com/mailman/listinfo/detomaso
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@server.detomasolist.com] On Behalf Of Jack DeRyke via DeTomaso Sent: Wednesday, June 22, 2016 14:35 PM To: steve@snclocks.com; demongusta@gmail.com Cc: detomaso@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
The easy way- drilling the main bearing webs- may weaken the block on high-horse applications. Maybe there are film sensors that could go under bearing inserts? They got significant temps from cam bearing sensors, too. Sadly, I can no longer find that oil company article on-line. Cheers- JD -----Original Message----- From: Joseph F. Byrd, Jr. <byrdjf@embarqmail.com> To: jderyke <jderyke@aol.com>; detomaso <detomaso@server.detomasolist.com> Sent: Wed, Jun 22, 2016 1:13 pm Subject: RE: [DeTomaso] Oil Temperatures 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@server.detomasolist.com] On Behalf Of Jack DeRyke via DeTomaso Sent: Wednesday, June 22, 2016 14:35 PM To: steve@snclocks.com; demongusta@gmail.com Cc: detomaso@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 The easy way- drilling the main bearing webs- may weaken the block on high-horse applications. Maybe there are film sensors that could go under bearing inserts? They got significant temps from cam bearing sensors, too. Sadly, I can no longer find that oil company article on-line. Cheers- JD -----Original Message----- From: Joseph F. Byrd, Jr. <byrdjf@embarqmail.com> To: jderyke <jderyke@aol.com>; detomaso <detomaso@server.detomasolist.com> Sent: Wed, Jun 22, 2016 1:13 pm Subject: RE: [DeTomaso] Oil Temperatures 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 [[1]mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Jack DeRyke via DeTomaso Sent: Wednesday, June 22, 2016 14:35 PM To: [2]steve@snclocks.com; [3]demongusta@gmail.com Cc: [4]detomaso@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 References 1. mailto:detomaso-bounces@server.detomasolist.com? 2. mailto:steve@snclocks.com 3. mailto:demongusta@gmail.com 4. mailto:detomaso@server.detomasolist.com
participants (4)
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Jack Donahue -
jderyke＠aol.com -
Joseph F. Byrd, Jr. -
Stephen