I made a zip file of all my superflow runs at Westech and all my DTS runs at Bill Mitchell. If you want to play with them, here is the file, it's roughly 1mb. Update: Stan tells me the old file is missing some parts so you might try and download the SuperFlow Dyno Viewing software here at their website. I didn't have any luck on the dyno websites to find a tutorial. In the superflo folder, find stored.exe and double click it, then in the menu, open a run and then play around. In the DTS folder, find 4000GRFP.EXE, double click it, then hit enter and then use the arrows to open a run. I think you have to hit escape to exit that one.
The reason I have been playing with the two sets of files, is because I wanted to see the differences between the two dynos! I was able to export data from a superflow run into an excel spreadsheet. I couldn't figure out if you can do this or not in DTS. I ended up going through a run point by point, writing it on paper, then jotting it into the spread sheet.
DTS vs Superflow
Are you curious? I know I am! Here is the spreadsheet of two runs which were very similar on both dynos. I think the superflow run was 934 and the dts score was 927. The yellow is superflow data, and the blue is dts. The white area on the right is the division of super/dts, HP and TQ. It's interesting that they get as different as 8%, but overall the difference was 1%. The horsepower curves are very similar. The differences appear when you look at the torque curves. One thing that all engines had at the event, was a hole in the TQ curve from 3300 to 4000. I'm not positive, but this would seem to indicate a dyno event, rather than the engines all having holes in the TQ curve. Perhaps it is some kind of mechanical loading issue? I thought it was cool to see the two side by side. :)
Dyno Sim Estimating
I took some of the 2002 Joe Sherman dyno runs and did a 3000 to 6500 score and it ends up like 987.2. I did this to try and match the 2003 runs. It looks like 2.7 points per ci. 2003 is more like 2.5 points per ci. I wonder what the score this year would of been from 3000 to 6500? I guess we'll find out in a few months. I'm trying to get a feel, dyno to dyno and block to block. If 2.5 holds, then the 510 scores would be close to 1,275. I tend to think that people improve every year and so I would tack on 1-3% improvement to that. If we had the 2004 average, we could better guess improvement trends.
Joe Sherman's Grandson Wins Virtual Engine Masters!
This is unofficial, but yesterday Jon posted in the comments that Joe Sherman's grandson won the virtual! How cool is that. :)
Kaase Burns Ground Strap Off Spark Plug!
Jon posted this teardown news in comments yesterday and I didn't want anyone to miss it.
Jon Kaase writes
"In the teardown I found I had burned a ground strap off of a spark plug. I'm sure it happened on the thursday runs, as it lost 30 HP on the last run above 5200. It must have been too lean for the dry air. The carb didn't stay right with the 1.3" barometer increase. It was better on Friday with the 20% humidity increase and didn't fall off on the warmups. I didn't want to chance an extra run to try richening it since it had just enough to win. It had 1060 on the first warmup run and should have held that throughout if it was a little richer. I would have changed the air bleeds before the finals if it was legal. I should have changed them when it came out of the box. I got lucky as it may not have made another run."
The Future Of Pirates Of Horsepower Blog
With the contest winding down, and me running out of things to blab about, I'll probably stop posting daily in the next couple of days. Sorry, I just won't have much to talk about. :) If news in the magazines hit, or if they announce details of next year, then I will mst likely toss a post up here and there, I'm guessing once every few weeks.
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