Have you gotten any quotes on majors yet? just wondering if they are relatively close to the above or if the dealers are jacking rates up.

Ahh yes, and if you immediately know the candle light is fire, the meal was cooked long ago.

1. How could the torque be measured at the crank then drivetrain losses subtracted if the measurement is made at the wheel. The only play in this the engine has is via an inductive cable to measure variances on the ignition wires to extrapolate RPM data.

it's true, he drove that thing everywhere and when it came time for an engine out it wasn't "crap, I have to spend so much money for this engine out service" as much as it was "crap, I have to go drive the Porsche every day for the next week while the Ferrari is in the shop".

This is all true, but again, I circle back around to the fact that the SAE correction factor is based off of how these three items effect the internal combustion process. So end result is that this should have been run uncorrected.

1. No. false crank torque is not what every dyno chart shows. your assumption makes no sense. Why, please do explain why a measurement taken at the wheel (roller) would magically create some false crank number.

I will both agree and disagree. yes they read out the same number but the meanings are different. again, its a six in one hand half dozen in the other situation.

There is actually a large amount of debate and thought that goes into it. IMO if you are not building this for a race series, pick one and stick with it. Depending on the transmission, number of gears, tire size, speed ratings, and output of the engine, either 3rd or 4th will be fine. While the numbers will vary from…

I feel like the number on the 355 major is a bit off. I had a friend with one (he drove it A LOT. In the rain, snow, sun, whatever) and I can specifically recall him telling me a number of times that he had to have majors done at $10 to $15k

Thanks for the 4 reply's...

For starters, you need to stop over thinking my words. I never once said anything about wheel torque or crank torque.

No. The question I was answering was how ft-lbs differs from lb-ft.

Yes, work or energy.

While the numbers are similar, foot-pounds is a unit of force where as pound-foot is a unit of torque. lb-ft is a calculation based off of ft-lb.

How is this misinformation?

Right, temperature beyond a certain point always effects efficiency. just like in a gas powered motor.

No this is inertia based. the whole calculate hp or calculate tq is a six in one hand half dozen in the other argument. It's effectively the same math just with one extra step.

Which means they probably have some air to water cooling system like a radiator and therefore exterior air temp would not be of much effect on the system (assuming they were using properly set up cooling fans while on the dyno).

No. lb-ft and ft-lb are two different measurements.

Correct, I was more or less clarifying that the system in use does not actually use an inputted altitude reading, rather, barometric readings.