The Ford Barn

sphooch · 03-10-2018, 04:10 PM

HI guys, I need a couple answers here; 1st some one drilled out the carb mounting flanges to 5/8 in. can I use a heli -coil to bring them back for the correct bolt? OR can I fill the holes with weld and redrill and tap?? 2nd- I'm gonna try my hand at welding a broken carb. flange , its my understanding that I need to get the cast beyond cherry red, in doing so will I melt the brass plugs ?? if so how do I remove the plugs? what size drill bit is the small one? and is it a big deal to remove and replace the plugs.I never did this work before and I don't want to destroy the carbs. thanks a lot THE HOOCH

Brentwood Bob · 03-10-2018, 08:22 PM

I would use a good core. The problems you have tell me the junk carb is a door stop.

DJ S · 03-10-2018, 08:30 PM

Quote:

Originally Posted by Brentwood Bob

I would use a good core. The problems you have tell me the junk carb is a door stop.

I agree...

Chuck Sea/Tac · 03-11-2018, 01:17 AM

A helicoiled carb works fine. I would find a n experienced welder to do the flange. If it’s broken near the idle jet, then that’s a problem. The late 31 has a thinner flange, and breaks easier. I’ve had a welded B carb( which also has the thin flange) and it rebroke later.

Synchro909 · 03-11-2018, 03:28 AM

I have late zenith carburettor on which one of the mounting tabs was broken. Out of 6 mm (1/4") steel, I made a spacer the same shape and size as the gasket that goes between the carb and manifold, then brazed that to the top. No problems.

sphooch · 03-11-2018, 08:55 AM

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Quote:

Originally Posted by Chuck Sea/Tac

A helicoiled carb works fine. I would find a n experienced welder to do the flange. If it’s broken near the idle jet, then that’s a problem. The late 31 has a thinner flange, and breaks easier. I’ve had a welded B carb( which also has the thin flange) and it rebroke later.

Thank you for the info ,I'll give thehelicoil a shot. the hooch

sphooch · 03-11-2018, 08:57 AM

Quote:

Originally Posted by Synchro909

I have late zenith carburettor on which one of the mounting tabs was broken. Out of 6 mm (1/4") steel, I made a spacer the same shape and size as the gasket that goes between the carb and manifold, then brazed that to the top. No problems.

This sounds like a workable solution which I can try .thank you. THE HOOCH

03-10-2018, 04:10 PM	#1
sphooch Senior Member Join Date: Jan 2012 Location: New Jersey Posts: 362	Late 31 Carb-rebuild HI guys, I need a couple answers here; 1st some one drilled out the carb mounting flanges to 5/8 in. can I use a heli -coil to bring them back for the correct bolt? OR can I fill the holes with weld and redrill and tap?? 2nd- I'm gonna try my hand at welding a broken carb. flange , its my understanding that I need to get the cast beyond cherry red, in doing so will I melt the brass plugs ?? if so how do I remove the plugs? what size drill bit is the small one? and is it a big deal to remove and replace the plugs.I never did this work before and I don't want to destroy the carbs. thanks a lot THE HOOCH

03-10-2018, 08:22 PM	#2
Brentwood Bob Senior Member Join Date: May 2010 Location: brentwood, ca Posts: 4,420	Re: Late 31 Carb-rebuild I would use a good core. The problems you have tell me the junk carb is a door stop.

03-11-2018, 01:17 AM	#4
Chuck Sea/Tac Senior Member Join Date: May 2010 Location: Between Seattle & Tacoma Posts: 2,411	Re: Late 31 Carb-rebuild A helicoiled carb works fine. I would find a n experienced welder to do the flange. If it’s broken near the idle jet, then that’s a problem. The late 31 has a thinner flange, and breaks easier. I’ve had a welded B carb( which also has the thin flange) and it rebroke later.

03-11-2018, 03:28 AM	#5
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 8,041	Re: Late 31 Carb-rebuild I have late zenith carburettor on which one of the mounting tabs was broken. Out of 6 mm (1/4") steel, I made a spacer the same shape and size as the gasket that goes between the carb and manifold, then brazed that to the top. No problems. __________________ I sometimes wonder what happened to the people who asked me for directions. Even at my age, I still like to look at a young, attractive woman but I can't really remember why.