Hi E-6, well, and I mean no disrespect, but it may have been interesting, but those of us who trucked through that era, the old Detroit's were no fun at all. The 2 cycle Detroit, in all it's forms, wasn't really a bad motor. I had driven Detroit powered trucks that had a ton miles on them. Like another poster said, they were pretty useless off road, as in soft ground, like in a dump truck, you had to keep the "needle against the pin" ( tachometer) and no way could you shift, as the truck would slow to below the power band, and you'd have to go back to the last gear, and plod along. They were cheap and easy to rebuild, and many fleets had them. The V-12 was not very common, although, years ago, I knew a guy with a V-12 Detroit that blew everybody's doors off, until the motor blew, that is. The 318 V-8, and later, the turbo V-6, were probably the most common. As far as the compression release, I never heard of an old Detroit having one. Older Cummins had a lever on top of the motor. Took 2 guys to get it going. Why a compression release? In the cold, ( before block heaters) you would crank the engine, while an "assistant" would pull the comp. release, and it would spin over faster, then let the handle go, and vrooom.( hopefully) I think later, it was a lever in the cab. That T handle on the Detroit, I believe, was an air shutoff, in case the darn thing began to "run away".
detroit diesel 8v92 questions
Discussion in 'Peterbilt Forum' started by flc120, Oct 13, 2015.
Page 7 of 16
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Goin2fast10. Cant i just loosen filter from filter heada bit until fuel starts coming out of top of filter?
then while tryin to crank it with no ether keep pressure at tank while turnin it over? -
I ran a 8V71N, a 8V71T, and a Silver 8V92TA 475 HP for many years.Lyle H Thanks this. -
I enjoy reading about how the old schoolers did it, and seeing if I can apply any of your wisdom to myself.201 Thanks this. -
Actuslly i forgot to ask is it common for these engines to loose there prime alot? Or is it due to sitting so long? I just dont want to go thru this process everutime i want to start this thing and its been sitting for a couple days without being started.
The owner did make mention to one thing. He said when he installed batreries on first crank try yesterday truck kicked on under its own power and ran for like 15 seconds no ether no throttle but that he then tried to press throttle and immediately cutoff? Dont know if that info would help any.
Also he did say wen he first moved truck from were it sat for about four years that it turned right over with no ether or help with a prime.....???? Wth gives -
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When it started the first time was from the fuel retained between the pump and injectors, it used it all before it could suck more from the tank. Hitting the throttle and dying was time coincidence.It doesn't happen every time just after setting a long time.
You need probably 1/2 tank, or, run out of a bucket/container to ensure suction line is completely flooded/immersed in fuel or the pump won't pick it up. -
You HAVE to have a constant supply of fuel until the system it purged of ALL air. You'll know when it is because it will run just fine.
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They were also excellent industrial, oil field, marine and generator application engines. They also were a lot less expensive when the "blew up" (which ANY engine will do if abused or neglected or just worn out) -
Fratsit, goin2fast10, Bean Jr. and 1 other person Thank this.
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