| [GMCnet] High volume oil pumps. And our amazing GMC engines. WOW [message #246420] |
Fri, 04 April 2014 20:36  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
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Dick Paterson does good work. I need to call him back to discuss this topic more. Les made a good point about some guy's get upset when the oil pressure drops at idle. When I was in college. I got involve with some studies that involved oils at that time. One thing that I was amazed with. Was how little oil is required to properly keep an internal combustion lubed. Most manufactures had the oil light come on at a pressure from 7 to 10 PSI. Thus anything above that was considered acceptable. We once ran a 400 Chevy on a dyno for a very long time with the oil pressure restricted to no more than 15 PSI. When that engine was later disassemble for analysis. No excessive wear was found. In a properly lubed engine. The main, and rod bearing will never come in contact with the crankshaft after start up. The internal combustion engine is amazing to me. One thing is how do they stay together with a piston that has to come to a complete dead stop twice during each crankshaft revoluti
on. And then do that at at just 3,000 RPM's That's 6,000 complete stops every minute. ( I run my Yenko engines to 8,000 RPMs. That's 16,000 dead stops per minute, ) Then do that for !00, to 200,000 miles. And if that isn't enough. Is expected to not use up any oil.
Bob Dunahugh
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