Its Time To Build Some BOOST!

Aaron,
We took the carb off and raised the jet sizes 5 sizes on both primaries and secondaries because the A/F ratio was really lean (14.5-16:1) at full throttle (No meth injection.)

That gave us 82s in the primaries and 97s in the secondaries.

I know that seems rich, but the A/F ratio was so lean (sometimes 16:1) we just wanted to fix that...

We ran out of time for a real world test because upon re-assembly, unbeknownst to us, the primary float had hung (at the bottom) on the power valve bracket (not enough free room when it's on the bottom of the float bowl) which made it unable to close the needle in its seat. This floods\ed the foat bowl and squirted gasoline, verticlly, out the vent tube.

We'll try again tomorrow.

Sorry...


No need to be sorry Bill its a process, as far as the jet size that does seem like alot of jet if the larger jets don't make it richer try and find a paper clip or something close to the diameter of your high speed air bleeds and plug the primary side that will activate your boosters sooner.
I was doing some testing after I first got the valiant road ready with a 750dp and was having close to the same problem but it had adjustable air bleeds and i plugged them with blanks and it helped alot. But I was told on multiple forums that the 750dp was to much carb for my application. I'm wondering if the 650 im running now isn't to big.
If I remember Toms running a 600, and Ryan is running a 650 demon that flows around 580cfm. Also I believe Ryan run a low 11 second 1/4 mile on the primaries only that equals about 280 cfm.
Just food for thought Bill keep at it we will get there.
Aaron