Dyno #'s This Weekend For 308 Intake/TB Mod

Thanks, But I thought someone was going to flow test both the throttle body and the CIS metering box flap valve thingie. I would like to see which of these two is the rate limiting step.

 

I believe Mark E. will be testing it soon, no one has ever posted flow charts on the 308 intake system.

I must refrain from saying anymore on why there are no flow charts or real data so as to keep the peace

Paul

 

Sure there is data..on a 3.2 QV: 216 hp with Kjet FI and 288 with Webers...

 

Russ,

PROVE IT

Nevermind I forgot you did already.....A Dyno operation just opened down the Street from the shop so once Pierce gets me my venturi's (still waiting) and get some mile on the car (break it in) I will dyno.

I will only post results if they are good as I don't want "mean" responses ;-) with those silly smiley faces and stuff.

Paul

 

I will say I was being a bit unfair in previously quoting the stock number at the rear wheels and the weber number estimated at the flywheel.... ...just kidding

The real story: Although they cannot be used to directly compare, for raw data's sake here is a dyno of a stock 328 and my Weber Mondial 3.2 (same engine bottom end) showing pretty conclusively that the Webers flow a lot more air, even with the stock cam. The 22 hp difference at the rear wheels is approximately 27hp at the flywheel for the difference in induction systems. What is most amazing is the increase in torque and engine throttle response with the Webers. And then there is that sound thing....

Now, mind you, Paul's car is going to make these numbers look a bit tame...
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Finally got the data files! Here's the back-to-back dyno runs for my K&N air filter and a new UFI paper filter as the only change. We actually did at least 2 runs each way and the results were consistent, but I removed the extra lines to make it easier to see. The HP and Torque along the entire curve was consistently better with the K&N. Blue lines are K&N, red is the UFI. The first chart is with speed on the X-axis, the second one is with RPM as we're used to seeing.
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Cool data Mike. Do you have the graph of the TB swap? I just think it would be interesting to see if its across the board drop or at a specific point. Mine where fairly consistent across the board on the 348 but then again the K&N was a much bigger gain on my car than yours as well.

 

Here they are, including spaghetti for multiple runs. The blue is obviously the same baseline as before, and the lower three lines which more or less overlap are the three sequential runs with the bored throttle body. You can also see that I wasn't as consistent in where I pulled off the gas pedal near redline.
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Mike - these graphs are excellent data. They really tell your story well.
Very believable on the K&N.
many thanks for posting!! Will go into my database of dyno runs for sure!!

 

Please excuse me for not remembering (or rereading six pages of posts) but what other mods does this engine have. It seems that the peak power is coming in at a much higher rpm than that quoted in the Ferrari figures. Thanks

George

 

That shouldn't change it...the further you are from 1:1, the higher % transmision losses you should expect, but the curves should be the same shape with peaks at the same rpm. Even looking at Russ's graph or my graph, our peaks , even with pretty major engine changes, are at about the stock rpm. I honestly don't understand why your hp is still climbing out near redline.

 

Can you post a pic of the ‘c-shaped manifold wrench’?