I'll sleep a little better tonight! :thumbsup:

It's all good, anytime I'm wrenching it's a good thing and the shop is warm. What ticks me off is my trouble shooting and experimentation. Either there was debris in that carb or I didn't richen the fuel screws enough. Holley specs 3/4 turn out as starting point but doesn't give a desired final range. Most of my tuning has been on bikes 1-1 3/4 turns and the old Demon carb was 1/2-3/4 out. So 2.5 turns is extreme to what I'm accustom to and the idle by-pass adds another unfamiliar variable. It appears the learning curve will never end, so I'll never be bored. :lol:

Turned out that much seems extreme -- and I wonder if that's a bandaid - but I'm not familiar with that carb. Might be worth a call to their tech in the morning??

I plan on emailing the tech I have a relationship after a little more experimenting. This carb appears to be pretty sensitive to input which is great once you figure out how sensitive it is. I should be able to alter the fuel screw range with the idle air bleed jets so no biggy.

The recommend 7 psi fuel pressure with 5 psi min, I thinking a new fuel pump that delivers 7 psi might be advisable as well since mine is 6 psi max. So do I go with electric or mechanical?

For years - 5 was max on a Holley... I think 6psi is fine and wouldn't touch it.

This is really where you need a chassis dyno - because the only way you're going to know if it's going lean do to low fuel pressure (I doubt it is) would be
with the numbers you'd get.

I have a guy up in Kirkland -- Alex at Carb Connection -- that has a chassis dyno and is a master around a carb. He's amazing really. Maybe that should be a Weld/Sieg road trip in the rig.

I've always went by the 5 psi guideline - The Ultra HP is spec'd for 7.5 psi max.

:confused59: :excited:

I have to get GNRS behind me first... and am hauling a Range Rover down for a buddy -- and bringing back another hot rod for another buddy... but it would be an easy run to Eugene and back... and the trailer is enclosed so winter worries don't count. We'll talk.:idea: :thumbsup:

Right -- but 7.5 psi would be appropriate to keep a high winding race car from leaning out. Not saying that you're motor isn't exceptional in every way.... :bitchslap:

Greg,

IIRC you hauled bro-outlaws' red Camaro around, now you're planning to grab this orange creamsicle thing Sieg's got. So after that, if this rainbow trend follows it's gonna be another '69 Camaro, a yellow one.

Hmmm....



:lol:

Charley won't even let me in the same building as Jackass.