Back in their day the 8V92's were the big horsepower engines when Cat and Cummins were just breaking the 400 horse mark. A far cry from today's electronic engines with their wide injection and timing parameters.
The 12V71 was top of the heap, after 77 they were pretty well done though. Those first generation V92’s gave Detroit a bad rap into the 80’s…pretty sad that by 85 their take rate was down around 10% when they had over 30% of the highway truck diesel engine market just 20 years earlier, if you didn’t count Mack it was closer to half.
If you put the truck/engine on a dyno you would find the 8V-92 two-stroke actually has a much wider powerband than a conventional 4 stroke diesel like a Cat or Cummins, the problem is actually that you have effectively a 4 speed transmission (it never uses 1st gear on its own) compared to the 12+ gears a big rig usually has. No amount of torque converter stall can totally make up for steps being that large between gears. If using low range gets too tedious you can instead use high range and manually select 1st gear for takeoff from a stop. The first gear on these Allisons is extremely granny and not recommended for use in low range, you will for sure break something
That engine concept is from the 1930 2 stroke diesel for god sakes haha it’s still impressive it can even keep up at all Name any other motor that’s was basically used in ww2 that is still being used today
not sure what point you're trying to get across. There are 2 stroke diesels being built today still. th-cam.com/video/N3VjUp9oz8o/w-d-xo.html there's 3 modern ones right there.
Most of the DDEC 8V-92's were 500 horse and 1450 ft lbs of torque. Keep in mind that the engine is 'only' 736 cubic inches or 12.1 litres!
Back in their day the 8V92's were the big horsepower engines when Cat and Cummins were just breaking the 400 horse mark. A far cry from today's electronic engines with their wide injection and timing parameters.
The 12V71 was top of the heap, after 77 they were pretty well done though. Those first generation V92’s gave Detroit a bad rap into the 80’s…pretty sad that by 85 their take rate was down around 10% when they had over 30% of the highway truck diesel engine market just 20 years earlier, if you didn’t count Mack it was closer to half.
435 back in the daya we have autocar construcktor 8v92 435 detroit fuller 12515 58k 5.38 dif beast
If you put the truck/engine on a dyno you would find the 8V-92 two-stroke actually has a much wider powerband than a conventional 4 stroke diesel like a Cat or Cummins, the problem is actually that you have effectively a 4 speed transmission (it never uses 1st gear on its own) compared to the 12+ gears a big rig usually has. No amount of torque converter stall can totally make up for steps being that large between gears. If using low range gets too tedious you can instead use high range and manually select 1st gear for takeoff from a stop. The first gear on these Allisons is extremely granny and not recommended for use in low range, you will for sure break something
what is the operating temperature of the engine, and when does the cooling fan operate?
That engine concept is from the 1930
2 stroke diesel for god sakes haha it’s still impressive it can even keep up at all
Name any other motor that’s was basically used in ww2 that is still being used today
That just shows how good a design it truly is that they can still get the job done so reliably 90 years on.
not sure what point you're trying to get across. There are 2 stroke diesels being built today still. th-cam.com/video/N3VjUp9oz8o/w-d-xo.html there's 3 modern ones right there.
@@TestECull Excellent point!
@@iBackshift Excellent point too!
What did you do?
F$$%-up on that corner, you cut it out.........
Cat guys trying to use that low end torque are a boon who the guys who pin and weld heads😂