Power Graph Thread

30psi · #1 23-07-2007, 18:30

Its leanest point is about 12.6:1 with the highest boost setting, which is about perfect for good power. The peak at 4200rpm seems a bit odd on the 2nd run though, but no harm being too rich though

alundra · #2 08-09-2007, 02:23

So, can we refer for all dyno that 18% of power is lost to transmission?
Because i have my first dyno tomorrow and i need this spec.

PukkaSilvia · #3 08-09-2007, 09:42

You cant find out the true transmission loss just by measuring the power at the wheels.

Although it is not very not accurate,the rolling road machine will calculate losses for you. That is why the operator coasts down the car on the rollers from high rpm in neautral.

People talk about a percentage you can use yourself to work it out. That is just from averages over time. The average rear wheel drive road car with between 100 and 200 bhp loses about 17% of the engine bhp as transmission losses.

Only way to know the true transmission loss is to measure the flywheel power on an engine dyno and the wheel power on a chassis dyno and take one away from the other

alundra · #4 11-09-2007, 16:51

As promised:

ChEsTeR · #5 11-11-2007, 09:55

Am i reading it right??
200 HP and 350 Nm. Is it a diesel?

And this is mine from yesterday wit a T28@1,3 Bar

umpkin · #6 11-11-2007, 10:31

thats 258 ft/lb

alundra · #7 04-03-2008, 18:10

What an insult a diesel for my s12

Yes units here are different.