Holley 4160 Rebuild Questions

[zzfranczz]

My car has sat a long while. I have started to get it running and the thing runs but terribly. The next step was to pull and rebuild the carburetor. I have an old Holley 780 center float (4160). I have pulled it apart and am down to one of the blocks attached by clutch head screws.
1) is there any reason to remove them? Can I rebuild it without going any deeper? I plan to soak the carb in cleaner, do I need to remove this and replace anything?

2) does anyone know where I can get a clutch head driver? I think the size is 1/4" but not sure, can some one confirm this? and tell me where I can buy a tool to remove this?

3) I have disassembled the throttle plate, and removed the butterfly plates, any advice on how to reassemble the plates? I am more concerned about the screws since they snapped pretty good (bent a craftsman professional series screw driver) and how or what care should be used to reassemble it?

4) how to reassemble the teflon things that are on the rods of the throttle plate?

5) Any advice on where to buy Holley parts? Holley Special tools?

Any advice would be helpful. I have two of these carbs so I will be rebuilding the second one at some point as well.

Thanks,

[zzfranczz]

I guess everyone is running EFI these days... :(

[sam 74]

1. take the whole thing apart, you don't want to rebuild and have something stuck in there to cause problems afterwards.
2. auto parts store, home depot, maybe harbor freight, thats where i'd start looking.
3. shaft into the base first and attach the plates loosely and get everything centered, use locktite on butterfly screws.
4. teflon things? if they are shaft seals you need to slide those into place when installing the throttle shafts. a pic may be helpful, its been a long time since i've done a 4160.
5. i use Summit racing or equivalent.

[zzfranczz]

Thanks for the tips and I will post pictures. That is good to know that they are shaft seals. I can at least refer to them. I could not see them on any exploded view. Here is what I learned and tried.

1) Called local place to rebuild carb, $350-400.
2) Called Holley to have them rebuild it, cost = $249 plus shipping here and there.
3) Rebuild it myself, $60 for carb cleaner, $30 for a can to soak the carb in (was going to get a pot from a restaurant supply house, real can would be $120), $35 for kit, $20 for special screw drivers ($4 for bits), $8 for replacement screws, another $10 for misc parts plus shipping. $163, plus my time.
4) New Carb, $279.

Well I went for #4 and walla, car runs great now, but did I learn anything? Yeah, there is very little reason to rebuild a Holley and around the Los Angeles area there is very little in the way of shops to do this sort of work.

The pictures are a good idea and since I have it apart I do plan to rebuild it and the second carb that I have. I will document where I am at currently and will for now put this on the back burner but I do plan to finish the tear down of this carb down and rebuild it.

[Derek@ModernSpeed]

At this point, there really aren't many reasons to send carbs to Holley to rebuild them unless it's a classic carb that is no longer reproduced, or it needs more than a rebuild. I can say that Holley has a running log that keeps them 4-6 weeks out every year. They also flow test them, and provide a warranty when it ships back to the customer. As far as the parts go, the basic kit can usually be purchased at Oreilly auto parts, or other Holley Dealer. When it comes to the small parts, call Holley. They can brake the carb down, and give you the correct screws the first time. The throttle plate screws are difficult to remove due to them being staked (mushroomed) on the threaded end after they are attached to the shaft. This prevents them from backing out, and ruining an engine. If you have any questions during the process, feel free to post up.

[bergers59]

Best advice I could give is get to get a book on the carb. They go through tuning, rebuild, and how it all works, this is the one I have http://www.summitracing.com/parts/hp...FXHxOgodfgYAlw I would tell you how to do it/what you're doing wrong, but I haven't gone through the whole book yet