Stumble off idle -

[Grubby]

Tried 82, 84 and 70 primary jets.

The difference in feel between the 82 and original 80 jets is barely noticable.

The 84s will pull smoothly down to 2000 rpm then it starts surging or bucking. The 80s had to be above 2200 during at steady cruise. When you stand on the gas the power feels much greater with the 84s. Moderate accel and WOT both seem OK with these jets. This is still strange. The Holley 750 would pull smoothly down the highway in 5th gear at down to 1600 rpms.

I tried the 70s for kicks, because I had them. They did help calibrate the seat of my pants to feel lean. They were super lean. The engine would barely get to 3000 rpms without the secondaries.

No other jets to try without placing another order.

It seems that 86 or 88 jets would be required to smooth things the rest of the way. However, that seems really rich for this application.

Another noticable difference between the Holley 750 and this Quickfuel is during warm up. The Holley ran decent after just a few minutes from cold start. The Quickfuel runs very poorly until full temperature. This makes me think lean to.

I will call Brent on Monday and discuss.

John