Anyone know where I can find a good, legible 3-rotor dyno sheet? Preferably SAE corrected, and charted vs. rpm, not mph. I notice the single turbo guys seem to like to use mph... it does makes the power look more impressive when you don't know it didn't come on until 4 or 5k rpm... heh heh.

For that matter, anyone have a decent single turbo dyno sheet meeting the same requirements? Even better if you've got horsepower at rpm points from 2,000 to 8,000 (or near enough) by 500 rpm intervals.

Thanks.

 

What are you up to now Jim..... ?

 

Oh, just a little experiment.

 

gordon should have several that meet these requirements

any boost level in particular?

I'm also curious what you are up to, second thoughts on the lt1 or something?

 

Hey quit trying to embarass us! hehe, I've seen your little charts, no need to rub it in

 

What ever it is, you win Jim

 

Why don't you try the 20B and single turbo sections?

 

I've seen Gordon's charts, hence the request for legible charts plotted vs. rpm, not mph...

Nope. Turbo and boost level are irrelevant, although the larger the turbo, the poorer the comparison will be.

You're kidding, right? No, just proving a point.

 

I tried the single turbo section, including the big thread on single turbo dyno results. The best scans were from the Australian crowd, and I don't care to try to convert one of their graphs, although if someone would like to do it for me, I'd love to compare my curves to Rice Racing's.

Most of the scans were pretty much useless, many were in STD or "Standard" horsepower, so they weren't corrected and are therefore probably inflated, and most were charted vs. mph, which is completely useless to me.

If someone has a good printout, can scan it properly in something larger than postage stamp format, and the numbers are both SAE corrected and charted vs. rpm, then we're in business. Better yet, some Dynojet shops give you a 2 or 3-page printout of your power plotted every 100 rpm or so, and that would be even better.

 

I searched the 20B forum... and found exactly 3 dyno results, and an incomplete curve at Atkins rotary. The most powerful curve was Pettit's, but it's an Excel chart, not a dyno printout.

 

http://www.3rotor.com/chito.htm

 

Thanks Wargasm, that's one of the three I found. I don't think it's a fair representation of a 20B, though, and I'm sure I'd hear about it if I used that curve in a comparison test.

BTW, I converted Rice Racing's single turbo dyno sheet from kw to HP, converted from Dynopack to Dynojet (10% increase), and then to flywheel horsepower (x 1.18), and then calculated his torque values from the corresponding horsepower values. Anyone want to see what that looks like compared to my V8?

 

Oh boy here we GO!

Show us what you've got!

B

 

These are not the super precise actual curves you wanted, but here are the 3 I have (same as you maybe?) on my webpage:

http://www.catenet.net/graph.php?car...1&SUBMIT=GRAPH

The main dyno page is

http://www.catenet.net/dyno.php

 

Yep, those are the same three. Chito's was the largest curve with the exception of the Banzai chart on Pettit's site. I'm not sure why they'd be reluctant to post an actual dyno chart for their Banzai car, however...

 

Didn't Brooks pull that car in his near stock Viper?

 

Brooks put down 452 corrected RWHP (about 533 flywheel horsepower)... there's nothing nearly stock about that.

http://viper.dragtimes.com/img/brooksviperdynosae.jpg

 

But what mods does he have? Bolt on headers, smooth tubes and exhaust?

 

com on Jim, lets the see the comparison, you converted all the numbers and aren't even gonna let us the see the results?

 

OK, I shared the results. Check the main "latest progress" thread for the comparison charts.