Excellant points Big Dog!!

A defined testing procedure should be in the ruleset and public knowledge.

I had mentioned this in another thread but it pertains to this as well.

The transaxle fluid temp will alter HP results. It is a heavy oil and if you only warm up your engine off track and then go to the dyno as opposed to comming off the track after a session the results will be different. I dont have any data to support this but how could it not affect the results with a heavy gear oil, we know what light engine oil does.

So do we need to have a minimum transaxle temp?

I know that some SM guys will run the lightest oil possible in their engine and gear boxes to get the best HP to the ground and are willing to sacrifice longevity in the process.

I agree with Foxx that we need to have a very defined testing procedure for dyno pulls with all possible variables considered.

Such as:

SAE correction
Smoothing factor 5
Engine oil temp
Transaxle temp
Maximum RPM
4 gear only pull
30 psi tire pressure with Spec tire

This is not a complete list, please add your additions and comments so that we do not make a boondoggle of this. A narrowly defined procedure will be best for the class.

I would rather not have any dyno rule but of we are forced to have one then it needs to be a well written rule with no loopholes or omissions that would cause a competitor to be accidentally DQed.

I would say run the car as delived by the driver as it comes off the track(Hot/Cold/Whatever), if it goes under then they are good. If it is tested right after it comes off the track then that is as it was raced.