Forum Discussion
Hannibal
Nov 27, 2014Explorer
bkirkpatrick wrote:
Facts not in evidence? Here we go. More gas high RPM fans to do the same as low RPM diesels.
What's high rpm and what's low rpm? I can pedal my bicycle about 70rpm for several miles before I give out. At what rpm do you suggest an engine won't survive? 2000rpm is a blur. You can't see it, much less pedal it. 4000rpm is also a blur. What makes 2000rpm "low" rpm in your mind? Compared to a 19000rpm Formula One race car, 4000rpm is real close to car and pickup truck size diesel rpm. During R&D, Chrysler ran the 5.7L Hemi 300 hours at full throttle, full load peak hp rpm. Upon tear down, only normal wear was observed. Nothing melted or broke. I gave my 5.7L Hemi no mercy. At 120k miles when I traded it, it still ran like new, burned no oil and had good power. It saw 4500rpm any time it needed it. A roofing company bought it and I still see it occasionally out working hard. Because one is afraid of 4k rpm doesn't mean it's killing the engine.
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