Carb Rebuild

[GlynnB]

Posted yesterday about "boogering up" my idle jet when I attempted my first carb rebuild. Been worried about how to get the idle jet out without damaging the carb body. I talked with a mechanic friend this evening for his suggestions and he said that since the "ears" (that allow you to remove it with a screwdriver) of the jet were all that appeared to be damaged I could probably just "clean" that side of the jet up so the brass doesn't crumble and leave the jet in. I hadn't thought about that but it does make sense. I was wondering what y'all's opinion would be on this. Rebuild it with the same idle jet in and see how it runs or try to replace the idle jet? Wish I had never tried to remove it but it is too late now. I also have another issue that I didn't address in my post yesterday. The big drain plug on my carb has been replaced (?) with a plug that is removed with a big screwdriver. I have not been able to get it out. Should I try to replace it or leave it alone. If it should be replace, I welcome suggestions on how to do it. Thanks!

 

[old]

I almost never try to remove the jets due to the fact you run into that problem you have. I do a lot of carbs and I use simple socking carb cleaner and air and a torch cleaning tool to make sure all the jets are open. If real bad a Dremal tool to remove rust etc.

 

[JCinKY]

(quoted from post at 19:00:59 04/15/13) Posted yesterday about "boogering up" my idle jet when I attempted my first carb rebuild. Been worried about how to get the idle jet out without damaging the carb body. I talked with a mechanic friend this evening for his suggestions and he said that since the "ears" (that allow you to remove it with a screwdriver) of the jet were all that appeared to be damaged I could probably just "clean" that side of the jet up so the brass doesn't crumble and leave the jet in. I hadn't thought about that but it does make sense. I was wondering what y'all's opinion would be on this. Rebuild it with the same idle jet in and see how it runs or try to replace the idle jet? Wish I had never tried to remove it but it is too late now. I also have another issue that I didn't address in my post yesterday. The big drain plug on my carb has been replaced (?) with a plug that is removed with a big screwdriver. I have not been able to get it out. Should I try to replace it or leave it alone. If it should be replace, I welcome suggestions on how to do it. Thanks!

The drain plug on the bowl is a standard 1/4" pipe plug. I would get it out and replace with a plug that you remove with a wrench. Vice grips?

Being able to remove that plug easily is a must to check fuel flow when diagnosing issues.

 

[Dell (WA)]

Glynn.......boogered up yer idlejet, eh? First off, gitt some hollow ground "gunsmithing screwdrivers". (or make some) Most common screwdrivers are "wedge" shaped. Hold the wedge to the side of yer grinding wheel and hollow grind the wedge so it becomes PARALLEL. (don't overheat it) Now yer newly made hollow ground screwdriver will most likely fit the buggered up slot. It may take a couple of tries.

2nd thing; BOIL yer castiron carb body.......seriously...... Castiron has a different coefficient of expansion than brass does. And surprizingly enuff, iff'n yer hollow ground screwdriver fits down the hole, guess what??? It'll screw right out while HOT.

Now gitt'chur NEW BRASS JETS from a FULL M/S carb kit and fit all NEW jets. Simple, eh? ........the amazing Dell

 

[GlynnB]

I made a screwdriver to fit the first time but the brass jet crumbled. I did not apply heat as I had "soaked" for a day or two with PB Blaster. I think there may be enough of the screwdriver slot left for a screwdriver to grab after I boil it. Thanks for the idea!