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Discussion Starter · #1 ·
Guys,
I've had a thread about this in the past, but I want to try it again. Some of you have been helping me attempt to put an older reverse idle spreadbore holley on my car. Well last night the carb left me stranded on the side of the road. I opened the hood and gas was pouring off the secondary shaft. I took the cleaner off and about 1/2 inch of gas was sitting on the secondary blades with fuel still pouring in off the venturis. I hit the secondary bowl assuming the float had stuck. I tried restarting and once again fuel just came pouring out of the secondary venturi......... needless to say. That carb is coming off. My other weirdo Holley/Weber carb is going back in till I can figure out what I'm going to do.
This Holley/Weber carb does not have transfer slots. I haven't a clue where the blades are supossed to be tuned to. Any ideas here guys? This is a picture of the secondaries. You can see the dirty marks on the carbs from where it is normally closed around. If I completely back the set screw off the blade will just barely completely shut off the top of the upper hole (the upper hole of the pair) not the one really far up.
I've made the assumption in the past it should rest between the two holes, but I really don't know. Any ideas?

http://s200.photobucket.com/albums/aa265/dauber65/Just Carb/?action=view&current=100_1297.jpg
 

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66 El Camino 57 Chevy pickup 2004 Tahoe
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don't look for a T-slot in the secs. Look at the primaries.

running over in then secs, has junk in the needle/seat. clean it, clean out the line, install a filter.

If there's junk in the lines it doesn't matter what carb you install, it'll be running over soon.
 

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Discussion Starter · #3 ·

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66 El Camino 57 Chevy pickup 2004 Tahoe
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25,548 Posts
then those holes are the slot. usually when they use that approach there's a vertical line of those holes, maybe 3 or 4 of them. serves the same purpose as a slot.
 

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Sometimes a holley needle/seat assembly doesn't need a reason to leak past. They just need thrown away and replaced. I've had plenty of brand new ones that were leakin' junk. And more than 1 brand new carb I've had to replace at least one of them on.

They are a cheap piece, available at most any parts store.
 

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Discussion Starter · #7 ·
Could show a picture of the carburetor from overhead?

Louie
Sure. Pick your poison. These are all pictures of my chrome holley 650 that will be going back on. I took it off because sometimes it leaks some off the throttle shaft. Plus I like to play.

http://s200.photobucket.com/albums/aa265/dauber65/Just Carb/

So what are the disadvantages to having the secondary blades COMPLETELY closed where the set screw isn't even touching? My cam is fairly mild XE262 that I can easily have a good idle just off the primary adjustment.
 

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Discussion Starter · #8 ·
then those holes are the slot. usually when they use that approach there's a vertical line of those holes, maybe 3 or 4 of them. serves the same purpose as a slot.
Ok. Here is a picture with the primary open.
http://s200.photobucket.com/albums/aa265/dauber65/Just Carb/?action=view&current=100_1293.jpg
Are all of those holes connected. Only two of them are in line. There are the others scattered about inside there.
So how do you translate a bunch of random holes into the "make a slot" technique?
 
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