Disappointing Dyno Result

[jonnaz]

Thanks Espen

Yes standard Gearbox. looks about 21-23% transmission loss. I have leaned out the top end since this run, also tapered the boost as it makes no more power after about 6200 as the t3 exhaust to turbo chokes the engine it pointless trying to ram more air in.

[EspenW]

Yep, looks like Dyno Dynamics apply a factor that usually works out to approx. 20% ish loss at peak power vs tests done on the road (depends on the rpm of peak power, the higher the rpm, the higher loss vs. flywheel, due to windage losses in the transmission, rolling resistance, etc). Around 15% loss at peak torque, so losses are not a fixed percentage due the beforementioned factors.
The Dyno Dynamics numbers for various cars are based on testing on an engine dyno before testing on their rollers, so their numbers make sense.

Would be good if you could do a pull with the new setup. Multiple pulls in each direction would make it easier to average the results.
Safe testing place, of course.

[Billman]

HX35 should make more power than HX35 Super as the first one has much bigger impelllers Both sides. Everz Stock HX35 features a 70/60 turbine impeller. Compressor side I have seen from 55mm-58mm inducer sizes on stock ones.

[jonnaz]

i will do a few runs with the new setup and send them to you Espen. Anyone know how to get the vems tune to output the csv file in separate columns?

thanks

[Thuppu]

Friend of my just made 567hp/703Nm @1,75bar with custom HX35 Super with 60mm turbine and #8 hotside. 98 gasoline and no WMI.

[EspenW]

i will do a few runs with the new setup and send them to you Espen. Anyone know how to get the vems tune to output the csv file in separate columns?

thanks

Sounds great!
I found an easy way to separate the columns, so don't worry about that.
I assume that the weight of 1550kg including driver was off a weighbridge or similar and not an estimate?

[Billman]

Friend of my just made 567hp/703Nm @1,75bar with custom HX35 Super with 60mm turbine and #8 hotside. 98 gasoline and no WMI.

Probably it is not the Super35 KKD sells.

Can you get the dyno and/config if he runs on VEMS?

[Thuppu]

Probably it is not the Super35 KKD sells.

Can you get the dyno and/config if he runs on VEMS?

KKD sells the HX35 with the 54mm Super compressor and 60mm turbine but it has a #12 housing, my friend has the "Super #8" turbine housing machined to fit the 60mm wheel. It was made by ProTurbo in Finland.

Yes, he runs VEMS. I can ask if he wan't to share the configs. Here is the dyno vid(bad picture quality):

https://www.youtube.com/watch?v=Ysta82Jh0LQ

[Settari]

Friend of my just made 567hp/703Nm @1,75bar with custom HX35 Super with 60mm turbine and #8 hotside. 98 gasoline and no WMI.

Can you say Thuppu, other specs of this car? Lot of power with a small turbo.