Rated engine power
How do manufacturers, presently, determine how to rate their engine's crankshaft horsepower? Is the cooling fan engaged and drawing air? Alternator charging? Power steering pump and A/C installed and ...
Forum Discussion
Cummins12V98 wrote:ScottG wrote:Cummins12V98 wrote:
" Every DYNO event I have been to the Stock Cummins nets about 85% of advertised HP. Sometimes a bit more.
That's in part because the intercooler is out of the picture. They make a big difference!
WHY is it out of the picture?
Not much different than on the road with a big fan blowing at the front.
I've only been to a few dyno events but none ever used a fan - do they sometimes? It would take a big one. Banks uses an elaborate setup of 40 HP worth of electric fans a bunch of ducting for dyno runs. Anything short of that isn't going to move enough air to make a difference IMHO.
