Hi everyone. Took my car to an Awesomegti RR day over the weekend and got 263bhp at wheels ( about 340-350 @ flywheel ) and 440 lb torque. Please feel free to say anything good or bad about the graph.

Am I reading that right - 80bhp transmission losses between fly and wheels? Impressive figures nonetheless

Chris

What percentage would you add for a 4wd car then ?

23% transmission loss - is that right for a quattro?

If it`s 23% that would make it 323bhp. Flywheel figures are all guesstimates which is why i did the 500 mile round trip to Awesome as it`s power @ the wheels figure which cannot argued with really. Wish they where a lot closer to me as i would use their dyno all the time if i could.

I guess it depends if it's permanent 4wd? The Scooby I had made 251bhp on a rolling road with 70bhp transmission losses (because it was permanent AWD)...

Chris

i always thought it was 25-30% losses on the haldrex cars but i am probably wrong as usual.

I guess it depends if it's permanent 4wd? The Scooby I had made 251bhp on a rolling road with 70bhp transmission losses (because it was permanent AWD)...

Chris

Was that 251bhp fly or wheel figure? If it`s 251 @ fly then the scooby got about 36% tranmission loss.

Was that 251bhp fly or wheel figure? If it`s 251 @ fly then the scooby got about 36% tranmission loss.

That was flywheel and about 180bhp at the wheels.... But yeah about 1/3 transmission seems about right for a permanent AWD setup.

Chris

Very good figures but......

Drops off to early for me!

Very good figures but......

Drops off to early for me!

And me.... :( Power looks good, but ... runs out of puff to quick I think. Good for a diesel nonetheless.

My old Scooby lost 64 BHP running 280 AWD

Anyway good result Mikey

Did you use Nos on the day?

What you going to get Allards to do next?

There is a nice 4wd DynoDynamics at Silverstone if that's any closer Mike.

Been there myself.

Or DSA in Aylesbury: http://www.dsautomotives.co.uk/pages/performancemods_set.htm

figures look nice i agree but i also think it is too peaky for my liking, power wise its naff all really untill about 3k then its all over at 4k which doesn't sound very exciting to me.

bet it still pulls like a train when that peak torque is doing its thing

There are 4wd dyno`s nearish to me like Interpro at Bristol or Westec ( sorry didn`t mean to swear ) but they don`t do power at the wheels like a Dynojet RR does. At the end of the day power at the wheels is power at the wheels if you know what i am trying to say where as flywheel power unless done on a bench dyno are calulated very differently and show different figures between different makes of dyno.

@fezboy This was done with NOS which adds about 40bhp.Going back to Allards in 3-4 months time for a new much bigger set up.

totally agree on the wheel power thoughts as i also take flywheel figures with a pinch of salt but a dyno can still vary a lot from another dyno sadly, NOS is for cheaters!!

so taking the NOS out of the equation your making the same power as a similarly modified 1.9PD

figures look nice i agree but i also think it is too peaky for my liking, power wise its naff all really untill about 3k then its all over at 4k which doesn't sound very exciting to me.

bet it still pulls like a train when that peak torque is doing its thing

How can you say the power is peaky. The power rises up to 3k then holds steady to the red line with no drop at all. At 2.5K its got about 180WHP ( 221 @fly with 23% tranmission loss) and at 2.7K it has 200bhp ( 246 bhp fly ) and torque rises from 300lb at 2.3K to 370lb at 2.4K i don`t call that naff all really but thanks for your comment and i will try harder to make the car more powerful later on in the year so that i don`t have naff all power for to long.

There are 4wd dyno`s nearish to me like Interpro at Bristol or Westec ( sorry didn`t mean to swear ) but they don`t do power at the wheels like a Dynojet RR does. At the end of the day power at the wheels is power at the wheels if you know what i am trying to say where as flywheel power unless done on a bench dyno are calulated very differently and show different figures between different makes of dyno.

@fezboy This was done with NOS which adds about 40bhp.Going back to Allards in 3-4 months time for a new much bigger set up.

Dyno Dynamics give WHP output.

AFAIK WHP is then used to calculate FWHP.

so taking the NOS out of the equation your making the same power as a similarly modified 1.9PD

Yes i guess so but mine has traction and doesn`t smoke like it`s powered by a coal powered steam engine. Anyone got a dyno graph of Lukes car and has it been on any other dyno then Jabba`s ?

Oh dear. This thread is going way down hill...

To get over 300bhp out of a PD engine is some going, bloody good work fella.

impressive figures, even more so as they are whp

How can you say the power is peaky. The power rises up to 3k then holds steady to the red line with no drop at all. At 2.5K its got about 180WHP ( 221 @fly with 23% tranmission loss) and at 2.7K it has 200bhp ( 246 bhp fly ) and torque rises from 300lb at 2.3K to 370lb at 2.4K i don`t call that naff all really but thanks for your comment and i will try harder to make the car more powerful later on in the year so that i don`t have naff all power for to long.

it may hold peak power from about 3000rpm all the way to the redline but, in fairness, that redline is about 1200rpm later at 4250 - which is surely gonna be taken care in no time at all by all that torque

I was wondering why it wasn't taken to 6000rpm

I was wondering why it wasn't taken to 6000rpm

now that would cool

to bo be fair the peaky thing was aimed at the torque rather than the power and me being a muppet messed it up

but as above the previous runs went upto 6k yet this one stopped short :confused:

but if yours is making it without smoke then thats very good but is it down to the mapping, setup or a DPF?? but thnk god someone has done something sensible and stuck all them torques into an AWD car rather than wasting them on spinning two front wheels