Join Date: Nov 2004
Feedback Score: 0 reviews
Re: Break in theory of diesel engines .....myth?
my unqualified and uneducated opinion on this matter, is that this reputation comes from the days long gone, where diesels were primarily used in commercial truck applications, and highway busses only, you couldn't get a diesel in every pick up truck in 1965. these large, mammoth engines that powered these vehicles 40 years ago, and even today, run at very low rpms, which certainly helps them to go the distance. my 6-71 is governed at 1900 rpm. that's all she'll do. if you take a modern gas engine, and run it down the highway at 1900, i bet she'll go 500,000 miles too before an overhaul is needed. unfortunately, with todays higher revving diesels, this is no longer true. i don't really remember that well, but when i had my 2000 powerstroke f-350, it redlined well into the upper 3,000's if my memory serves me correctly, i'm sure all you guys know for sure. well, that's almost twice what the big boys turn. no to mention, the highway trucks were designed to go millions of miles, and the engines were assembled with that in mind. you're kidding yourself if you think the international 7.3l is put together with any more care, or with any more precision than say the new chevy pick up truck gas motors.
really big crew cab dually on a 1985 GMC Topkick chassis with Cat 3208, Allison auto trans, and airbrakes. 1955 GMC Scenicruiser bus, 8v-71, Allison 6 speed auto. 1966 GMC 4107 bus, 8v-71, 4 speed spicer/grinder.