Desktop Dyno

[Cleaner13]

ok I know this is a very long stretch but I was wondering if anyone out there has a desktop dyno file for the 87 grand national engine

I dont know the specs on it like the cam and compression and all the details at all so I was hoping someone maybe made a file of it

if you did please e-mail or respond to this post

thanks alot

Carl

Cleaner07@aol.com

 

[Jeff]

Did you get a file from anyone on this?

 

[Cleaner13]

no I havent
I have been waiting for others to respond but I guess not too many people have desktop dyno

Carl

 

[Brooks]

HI Carl, I have Desktop Dyno 2000. When I first got it I did a lot of tests building motor files for motors I had dyno sheets for or which had dyno tests in magazine articles.

It was very accurate for naturally aspirated motors but I never could get any real accuracy for forced induction applications. The turbo motor simulations were the absolute worst. In every case Dyno 2K would show power and torque quite a bit lower than the actual dyno run for a turbo motor.

On the flip side, it was good for showing trends in the difference between changes. What I mean is that, even though a particular turbo motor dynoed at 450HP and DD2K would show maybe 375HP any changes would reflect the increase or decrease in power mentioned in the article for the modification.

With that in mind, I wouldn't bother using DD2K for estimating real power but I don['t think it would be too bad for comparing what different cams or heads might do.

I pretty much think of it as a nifty toy, good for bench racing maybe but not to be taken very seriously.

Charles Brooks

 

[Jeff]

Originally posted by Brooks

It was very accurate for naturally aspirated motors but I never could get any real accuracy for forced induction applications. The turbo motor simulations were the absolute worst. In every case Dyno 2K would show power and torque quite a bit lower than the actual dyno run for a turbo motor.

On the flip side, it was good for showing trends in the difference between changes. What I mean is that, even though a particular turbo motor dynoed at 450HP and DD2K would show maybe 375HP any changes would reflect the increase or decrease in power mentioned in the article for the modification.

With that in mind, I wouldn't bother using DD2K for estimating real power but I don['t think it would be too bad for comparing what different cams or heads might do.

I pretty much think of it as a nifty toy, good for bench racing maybe but not to be taken very seriously.

Charles Brooks

Yup, that's how I use DD2K as well. When selecting cams the numbers may not be exact, but you can get a feel for where the power will peak and if you have enough low end, top end, etc. Also, when switching heads I have some real flow data from Chevy High Performance (this is for my Corvette) so I can trend the power increases and peak power for the heads I'm considering. As for real output, I don't think it's even that accurate for NA engines...but I like to play with it!
Jeff