The Ford Barn

Maclab58 · 10-11-2014, 05:39 PM

The threads where the side bowl bolts to the carb top were pitted, well they finally gave way. Is it fixable? Helicoil! Braze and retap?????

tbirdtbird · 10-11-2014, 06:03 PM

helicoil

jimvette59 · 10-11-2014, 06:27 PM

Helicoil, should be 1/2 X 20 TPI. Make sure you bolt the flat surface of the carb. to a angle plate and don't let that drill grab. JHHO.

redmodelt · 10-11-2014, 09:26 PM

Take a drill that is the correct size and grind most all the tip off just leaving enough flute to cut on the edge so it will act like a plunge cut end mill. You don't want to drill into the seat for the seal.

160B · 10-12-2014, 02:41 PM

Quote:

Originally Posted by redmodelt

You don't want to drill into the seat for the seal.

On a side bowl carburetor the bolt that holds the side bowl to the carburetor top does not seat the way a gas line with a ferrule seats on a non-side bowl carburetor. The gaskets on the side bowl do the seating and prevent gas leaks.

Ed in Maine · 10-12-2014, 04:54 PM

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The helicoil will come with a recommended drill size. In the past, I have used a couple of undersized drills leading up to the helicoil size so that you are only skimming material out of the hole a little at a time. Use the Helicoil drill last. This prevents the drill from grabbing a lot of material at once. Ed

redmodelt · 10-12-2014, 06:30 PM

Duh on me! Correct about the the sealing part! Still good advice for installing helicoil in non side bowl carb.

10-11-2014, 06:03 PM	#2
tbirdtbird BANNED Join Date: May 2012 Location: inside your RAM Posts: 3,134	Re: Stripped Side bowl threads helicoil __________________ '31 180A

10-11-2014, 06:27 PM	#3
jimvette59 Senior Member Join Date: Jun 2010 Location: Perry OH Posts: 1,329	Re: Stripped Side bowl threads Helicoil, should be 1/2 X 20 TPI. Make sure you bolt the flat surface of the carb. to a angle plate and don't let that drill grab. JHHO.

10-11-2014, 09:26 PM	#4
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,340	Re: Stripped Side bowl threads Take a drill that is the correct size and grind most all the tip off just leaving enough flute to cut on the edge so it will act like a plunge cut end mill. You don't want to drill into the seat for the seal.

10-12-2014, 04:54 PM	#6
Ed in Maine Senior Member Join Date: May 2010 Location: Washington Cty., ME or Flagler Cty., FL Posts: 1,106	Re: Stripped Side bowl threads Sponsored Links (Register now to hide all advertisements) The helicoil will come with a recommended drill size. In the past, I have used a couple of undersized drills leading up to the helicoil size so that you are only skimming material out of the hole a little at a time. Use the Helicoil drill last. This prevents the drill from grabbing a lot of material at once. Ed

10-12-2014, 06:30 PM	#7
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,340	Re: Stripped Side bowl threads Duh on me! Correct about the the sealing part! Still good advice for installing helicoil in non side bowl carb.