Holley metering blocks

[BBR]

Something's not right here...



And here too...



No wonder my part throttle is rich....

[Scott Liggett]

Some one drilled out the idle feed restricters.

[BBR]

Yep and tried to tap the block with the pv plug. Niiiiice.

[Scott Liggett]

Looks like they were going for adjustable idle feeds and failed. My only two suggestions are to epoxy and redrill. Or, new blocks. Not sure if a carb specializt can save these. Probably cheaper to buy new ones. About $70 each.

[BBR]

Thought about filling & redrilling, but don't know what size they are supposed to be in the first place! I did the wire trick today and it helped a bit, it was not enough.

[Scott Liggett]

I think Squirrel measured his. What carb is this?

[BBR]

950hp

[Beagle]

According to Jeff Smith:

"The first was to reduce the size of the idle-feed restrictor from its original 0.036 inch to more like 0.034 inch."
Read more: http://www.carcraft.com/techarticles...#ixzz1veYwJLnY

Can you epoxy brass or copper rod in there and then get a set of drills after it?

[BBR]

I thought about just tapping/retapping them and putting an air bleed in.

[squirrel]

I can't see down in the holes, what does the restrictor look like? it's a cup plug, the part with the orifice is deep down inside there...you need to use numbered drills to "measure" it.

[CDMBill]

You might want to check the emulsion well bleeds as well. You could do the whole HP ultra thing with screw in bleeds at each orifice, but it might be cheaper to get a set of Quick Fuel or equivalent replacement blocks. BTW those are antiques.

[squirrel]

BTW those are antiques.

they have a 2004 casting date, that's way newer than any carbs I own

[milner351]

Perhaps it's time to try the percy's with the outside adjustable jets?

[BBR]

Percy's is an add on block and you still use your existing blocks. Looking at alternatives right now.

[milner351]

hmmmm - never looked that closely at them - well - I'm sure you'll come up with something cool - you always do!