Krut agreed to let us guinea pig his R56 for some baseline dynos. Our car will be here tomorrow, when we will do more with proper data logging, but in the mean time we had to see where the R56 stands. Ambient Temperature was about 40 in our unheated dyno room, so conditions were good for strong runs.

We only did 3 runs, since KRUT's car has a mere 250 miles on it (helix has an accelerated break-in program: mulitple dynos that loosen that motor right up). The first run, with the motor relatively cool produced big torque numbers, which we were not able to reproduce with the next two runs. These numbers are measured at the wheels, with no correction factor.





Some pictures of the car on the dyno:







Link to the video coming after lunch

 

link to the video: http://www.youtube.com/watch?v=pktDnBAciqc

 

no hood lining on the R56's? very interesting.

 

So as the car warms up it looks like is get some mild gains in HP with a drop in Torque?

 

Great color combo! Sorry, OT.

mb

 

Nice numbers

 

I'm sure it's safe, but I'd want you putting more tie-downs on my car

 

Nice numbers Krut! I see that you wasted no time in getting the car dirty

 

Thanks for letting us know your graph is not SAE corrected. Do you have the rest of the environmental info: barometric pressure, humidity, and elevation? I'm guessing you meant the temp was 40F?

Did you guys use a wideband?

Interesting the boost controller had a tough time keeping the level correct at lower revs. Perhaps that was "overboost" in action, since you couldn't repeat it
.

 

http://www.rri.se/popup/performanceg...p?ChartsID=690

Rototest Research Institute

 

According to our hyper sophisticated Helix Weather Monitoring System (www.weather.com) the humidity in Philadelphia is 84% and the barometric pressure is 29.84in with an arrow pointing up. I don't know the exact conditions in the dyno room.

All we did was measure the power curve this time. Since it was Kruts car and not our own, we didn't want to do too many runs on his brand new engine. We save that kind of tender loving care(/abuse) for our own cars.

 

Are these bhp @ the flywheel or the wheels

 

uncorrected wheel horsepower

 

From the original post.

 

Just so everyone knows, uncorrected wheel horsepower means these numbers are only comparible to uncorrected wheel horsepower figures obtained under the same exact environmental conditions [temp, elevation, and barometric pressure] on the same chassis dyno. A hotter day and/or lower pressure will yield lower power numbers because the air isn't as dense. Conversely, a cooler day [like the one this dyno was done on] with normal pressure means slightly higher than typical numbers are to be expected. This graph isn't to be compared to an SAE corrected graph on a Mustang dyno without that lack of correction taken into account.

All that said, the dyno numbers are about what I was expecting from the new engine.

 

very well said