Speedbump wrote:So I'm willing to be enlightened as I'm new to the alcohol injected drag race scene. I've done idle leak down tests to spec and barrel valve adjustments to spec and it idles and runs pretty good.(still doing license passes) but the first start of the day always wants a prime. Usually OK after that. Seems lots of other folks use primers too so what say you? Can start a new thread if needed, as I want to know.
They don't have accelerator pumps so you have to prime them for cold start. Reread my post, I was talking about hot start.
Just because someone says leak the BV to this amount doesn't mean anything. It's just a starting point. I ran 2 FT's for years. I could run the blades at .0025-.003 and leak the BV at 15% which was much diffent than Rons called out. You have to test to figure it out.
Also, you need to check your idle check pressure. I've run it as high as 20 pounds but 12-15 was always better than 2-3 some guys run. Depending on pump, you need at least a high speed bypass. I needed to run a high speed and a pump loop, which is just a fancy name for another bypass. Once the engine goes past peak torque, you have to get rid of fuel at a pretty good rate. Most of the time you can't do it with a main only. In fact, almost never.
Nozzle size, check pressures, pump volume...all that shit is a moving target. Most of the "flowed" nozzles I used were junk. So are the pills. Junk shit. The Rons stuff at the time was the most junk of all. I could go to a bigger pill and the engine went fatter. Junk. Kinsler was the best but you pay for it.
If I was doing it all over again, I run injected gas. After 20 years of doing it, alcohol wasn't worth the extra bullshit. And I'd have my system flowed with all Kinsler stuff. I'd love to tell you I'd try and run 80-100 pounds of pressure, but I could never get control of everything with pressures that high.
