Quote:
Originally Posted by Deakins
Let's face it, Nabush doesn't understand that there are vast differences in a manufacturer like Ford achieving an SAE rating for its engine and what he sees on the internet. Furthermore, he doesn't understand that the whole SAE process exists due to the inaccuracy of dyno's, and the manipulations that can easily be done by the operator/company. A tightly controlled dyno that is maintained well can be very useful in measuring output and gauging increases or decreases in said gains; while a cheap dyno that isn't well maintained and not tightly controlled will be all over the place.
If Ford went through the process and is stating the SAE number you can bet that if you pulled the engine out of a brand new car, and ran it as required on the dyno per the SAE testing standard you would get that SAE number. That's the whole point of the process!
All of these rediculous posts stem from well intentioned people that truly have no idea how a dyno works and the software calculations that are involved. If you lined up 3 different dyno's in a parking lot I could make any or all of them output just about whatever HP and TQ you wanted to see. Sorry, but that's the truth of it and why the SAE stepped in and gave us the process that manufacturers now use.
|
LOL
I know perfectly how a dyno works buddy and what an SAE number means (DIN in my case since I'm European). Are you a mechanical engineer ?
Do you know a lot of European manufacturer used to under rate their motor ? VW was famous for that, it is nothing uncommon...
It is notorious dynos are unaccurate, we even don't know if the yearly calibration is done every year as recommended by the manufacturer in each shops, depending of the brand the precision is more or less, but by giving several numbers from different dyno brand it gives you a baseline
Yes everyones knows that Dyno can only make a more or less an estimation of the engine power because it's difficult to determine precisely the drivetrain losses....
But since LT1 gives between 400-410Whp and the Coyote 420 to 430Whp average in stock form....
And since the transmission losses should be close, (Ford doesn't use straight cut gears
) ....it is likely one is more powerful than the other