carb question

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winton
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Zip Code: 27939

carb question

Postby winton » Tue Jan 12, 2016 7:45 pm

cleaning my cub for paint I found I pin hole in my manifold.it really needs replace.it's a 51.i have a IH carb. Are the bolts from the manifold to carb threaded into carb or through bolt w/nut? Mine are through bolt but the nuts don't look like they are original. IT has also had a barb fitting for inlet.I guess they forced a mip fitting in it.

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Barnyard
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Re: carb question

Postby Barnyard » Tue Jan 12, 2016 8:06 pm

Is this the pin hole you mean. If so, it belongs there.

Image

winton wrote:Are the bolts from the manifold to carb threaded into carb or through bolt w/nut?

The bolts are through bolts passing through the carb. They are threaded into the manifold. The nuts on top of the carb are fine thread.

winton wrote:IT has also had a barb fitting for inlet.I guess they forced a mip fitting in it.

The inlet can be helicoiled with the correct threads.
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winton
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Re: carb question

Postby winton » Tue Jan 12, 2016 8:29 pm

No mine is just rusted through it's in bad shape.i'll check tomorrow but my bolts drop through the manifold and carb w/nuts under carb ears.Must have been drilled through in the past.I just want to get the right manifold. Thanks

Bob McCarty
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Re: carb question

Postby Bob McCarty » Tue Jan 12, 2016 8:55 pm

The end of the stud that is in the carb flange is 1/4-20. Those holes can be helicoiled/ezsert repaired if drilled or stripped out. The other end of the stud (manifold flange) is 1/4-28 and has a nut on it. The gas inlet thread should be 1/2-20 but was probably stripped with 1/4" npt thread.

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Re: carb question

Postby inairam » Tue Jan 12, 2016 9:22 pm

When you only have 9 horsepower you need to know the names of all of the ponies!

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Re: carb question

Postby Barnyard » Tue Jan 12, 2016 9:28 pm

Forget what I said, I was thinking of something totally different. :oops: This unusual freeze in the area has me screwed up. :lol:
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
- Franklin D. Roosevelt -

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winton
Posts: 11
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Zip Code: 27939

Re: carb question

Postby winton » Tue Jan 12, 2016 10:51 pm

yeah somebody drilled or stripped the carb flange all the way through and shaved a nut for the right side of carb. new manifold and i'll look into heli coils. should have thought about tm pictures. thanks

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Re: carb question

Postby staninlowerAL » Wed Jan 13, 2016 10:17 am

viewtopic.php?f=1&t=91226#p722578 Check out the "HOW TO" FORUM topic "FUEL". Good Luck.


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