Post by JerryScript on Dec 7, 2013 22:08:17 GMT -5
I have a 50mm bbk and a uni air filter. I have the stock pilot jet installed, and still have to keep the a/f screw all the way in minus 3/8 turn to get the best idle. I live in Vegas, and did my tuning when temps where in the high 90s to low 100s, and now we are having the same cold snap everyone else is with temps in the upper 30's to low 40's (lows in the low 20's). Now my idle speed has increased dramatically in this cold air.
My confusion is why would I need to go down a size from the stock pilot jet after installing my bbk and a uni air filter? I thought with the increased air flow of the uni, and greater piston size, I would need to increase the pilot jet size. I actually did try larger pilots when I re-jetted the main, tried a 35 and 38, but the stock 33 was the only one I didn't have to turn the a/f screw all the way in just to keep it running.
Isn't this backwards? Shouldn't you need a larger pilot jet with an larger piston and less restrictive air intake?
My confusion is why would I need to go down a size from the stock pilot jet after installing my bbk and a uni air filter? I thought with the increased air flow of the uni, and greater piston size, I would need to increase the pilot jet size. I actually did try larger pilots when I re-jetted the main, tried a 35 and 38, but the stock 33 was the only one I didn't have to turn the a/f screw all the way in just to keep it running.
Isn't this backwards? Shouldn't you need a larger pilot jet with an larger piston and less restrictive air intake?
..BAD TO THE BONE..