Thanks to everyone for the info on the 4-corner idle on the Holley...

I was rebuilding it last night, and the damn Holley rebuild kit was missing parts (and critical ones at that)...

The kit was unopened, and the parts bag was sealed. BUT, even though the kit was for a Double Pumper, it only included 1 "rubber" check valve for the accelerator pump... I didn't notice until AFTER I had removed both the old ones...

The kit also included 2 Pover Valves, yet only 1 gasket for the PV... The rear is a plug, so I just reused the old gasket (looks fine)...

I did notice that not only was one primary idle mixture screw totally missing, but the front throttle blades were open well beyond the 0.030 (I'd say over 1/8"+ of the transfer slot exposed) while the rear blades were closed... the Primary accelarator pump had NO clearance (thats supposed to be 0.015", right?)...

Everything was nice and clean inside though.


Funky choke blade, pressed in place (no staked screws), so I had fun trying to remove/reinstall the primary squirter (big fingers)...

So now I have to hunt down those individual pieces.. Damn...

Thanks

Tony, fire me off an address. GOt some in the basement if you can wait on snail mail. Can have them out tomorrow.

You should call Holley and tell them what happened. Might be good for a free kit if you play it right.

Thanks Gene,

I sent you an email... I figure I will buy another kit for my carb, and utilize those and then use replacements when I build mine in a month or so (thinking of sending it out for a recolor...

I will also contact Holley, but as of late, they are taking 3-4 business days just to answer my emails...

Thanks guys...

Tony

Double check the .015" clearance on the acc pump. It's a bit confusing on where that is measured. You open the throttle blades all the way, then push the pump all the way. You need to have at least .015" between the pump arm and the linkage (where the spring bolt is). This is to protect the diaphram from rupture by pushing it too far. If you have .015" clearance when the throttle blades are close, the pump will actuate late. You want the pump diaphram to start moving as soon as the throttle blades start to move. That means no, or only a hair's breath of, clearance. (Unless this is a race car that stages at higher rpm. In which case a little gap is needed so the pump shot isn't used up before hitting WOT.)