How Gearing Effects HP from 1-3rd in 727's

nm9stheham said
Not to worry or to take my comments to heart. I recall all of the devices that came out with the 70's Arab oil embargo.... and toilet paper cartridge oil filters LOL

I am sure your tests and work will guide you better than any off-hand comment anyone can make sight-unseen. Modern electronic production FI sure made some pretty fantastic advances in engine performance.

BTW, you are right that a lot of fuel is shot into the intake when the throttle is pressed. But that accelerator pump shot is not happening when the throttle is held wide open for a dyno pass. So that theory of operation does not quite hang together. And any such results may be highly dependent on the state of tuning on the carburetor. So your 'thing' might be compensating for a very badly tuned carb, and the same results may not be there for a well tuned one.

For this "Chassis" Dyno test, he is bringing it up to 2000 rpm in 3rd Gear, he then starts the Dyno "Testing Mode" in operation. Then he fully depresses the accelerator. Granted, some of it may not be 100% accurate, but he does make 3 runs looking for similar results. With an increase so significant, 20% would be good, 35% is out of this world good. I know there are many factors to consider and evaluate. Considering this is a test from sustaining 2000 RPM then floored WOT to 4500 RPM, do you still feel the same that the acc. pumps don't make sense?

I know my carb is not "tuned", so to speak, "Perfectly". But the test is to see if it vaporizes large amounts of fuel without restricting airflow. Which the Chassis Dyno 2000 to 4500 RPM would indicate is the case. The HP was higher all the way to the point at which it starts to drop off, and even then it was higher during the drop-off.

I am planned for another test to verify these results since they are so significant. I don't have enough $$ to perform more of a test or more types of tests than this. Like you mentioned, it is hard to believe. I was shocked myself to see the HP go from 156 to 241 as well when I first saw the test results. I just hope having the data sheets printed out by a reliable Chassis Dyno Test Shop will be sufficient for a couple people I have in mind as investors to take me seriously.

I need R&D out the Wazoooooo!!! I'm not disputing that at all, rather quite agree with it.

Thanks,
Bob