Something in the transfer slot Holley 4160

[Bootybandit]

Ok so I abandoned my earlier post as it got crazy confusing due mostly to me.  So picture 1 is from a video of a guy explaining how the idle air mix and fuel circuit works He calls it a Transfer slot.  He has drown lines on the block to show how fuel moves.  Picture 2 and 3 show my Transfer slots and where I'm pointing that slot had something shaped like a nail head silver in color in it I tried to remove it and pushed it further back in.  Does anyone know if it something factory?  If not I assume this is what's causing all the idle issues.  One side is free and clear for idle while the other side is clogged.  AND... any suggestions on hoe to get that out????

PICTURE 1

PICTURE 2

PICTURE 3

[85lebaront2]

If the hole goes all the way up to the air bleed inside the air inlet (you can check the clear side with a piece of wire or maybe even a spray tube from a can of cleaner). It the check proves it goes all the way up, try blowing air or even cleaner in that upper hole to (hopefully) dislodge the material blocking the lower part.

I just looked at the gaskets from my kit and the double holes between the main body and metering block are there.

[Bootybandit]

So your gasket has 2 holes correct?   Which means the ports should be connected and controlled by the mixing screw.  This is what I have determined from watching multiple videos explaining in detail how this contraption works.  I watched a guy clean his ports with wire from a wire brush, Good idea.  Orrrrrr..... I just thought of this a E,B,or G string from a guitar.

[85lebaront2]

Just be sure you don't push whatever is in there up into the air bleed.

[Gary Lewis]

I don't like to use anything stiffer than copper wire to clean carb orifices.  Otherwise it is possible to enlarge things.

[Bootybandit]

Well here it is. It looks like a piece of the casting.  If I put it together and it still acts dumb I would be will to bet something more damaging has occurred elsewhere.  I do have clean Ports throughout now though.  Tell me what you think!!

[mat in tn]

a plug in a meaningful passage is a new one on me. there are a few cross drilled passages, but the access ports are capped(plugged) with a flat plug crimped in place. visible from the top of the metering block. air bleeds and transfer slots are not meant to be plugged usually. that's a heck of a wild goose chase for a carb guy much less a newbie. good catch!

[Bootybandit]

Found the other half of this later. It looks like threaded and now I'm wondering it its the interior of the mixing screw on the metering block.  I dont have air/fuel mix gaskets so the Idle out of control and still rolling.  I used a little black o ring but once you back the needle out it looses seal.  Maybe this week I'll get the gaskets in the mail.

[Bootybandit]

Well still surging, VaarOOOOm VaarOOOOm I will have to check the intake manifold and the fuel lines Im assuming.  I'm going crazy with this lol!  Does anyone have any suggestions on this?

[mat in tn]

do you have any access to a different carb. beg, borrow, just as a test. if you can divide and conquer. find out if it is certainly carb or intake gasket.  

[Bootybandit]

No I had one and gave it to the needy.  I will buy a used one from ebay and rebuild it.  But the more I think about this I really suspect why casting material with threads on it is floating around in there.  Mean time I will search for one, and update when I do.  Thanks again for the help!

[Bootybandit]

I found this and it should be here next week Its never been installed. For a hundred bucks and a gasket I thought it was worth taking a shot.
Carter AFB 625cfm

[Gary Lewis]

That should be plenty of carb for you.  And those are pretty simple carbs - not a lot to go wrong.

[mat in tn]

I like the carb and will be reading along to see how it goes for you. be aware that none of the linkages are going to be exact. throttle brackets are going to be mis aligned. etc.  Holley is narrow but long where the afb is short but wide. this can be more of an issue on a 5.0/302 than on a 5.8/351. wider 5.8 intake gives a bit more fitment room

[Bootybandit]

Well.... Installed the Carter AFB and she runs like a top.  Now to figure out the vacuum ports and Air fuel mixture.

[Gary Lewis]

Progress!!!  

[Bootybandit]

I take that back, its running really rough today hard to start idk why at least it doesnt surge but now it just seems like its missing.  super rough.  I bypassed my gas tank to see if that was it but same result.  Im really at a loss now.  It could be that the 75$ carb needs cleaning now that it ran and sat?  It ran great yesterday.  

[Bootybandit]

I Pulled the carb and took the top off looked at looks like its brand new in there.  I could tell someone has opened it before because the screws look a little nicked.  Anyway put it back on and it fired right up and idles good and steady at 800 rpm.  Good in and out of gears and back to park with a good idle.  Whats going on Here????????  Suggestions?

[Gary Lewis]

One problem I've had with Carterbrocks is getting something in the idle passage.  I've cleared it out by pulling the idle screws and blowing compressed air through the hole.

Hasn't happened often, but sometimes when I can't get one to idle correctly I try that and it usually works.  But that's for the idle, not overall rough running.

[Bootybandit]

I pulled them while I had it off and cleaned them so that might of been it.  Idle good now so I hope your right on that.