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What Helicoil for Radiator Bolt?

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stevenforehand
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Zip Code: 27921

What Helicoil for Radiator Bolt?

Postby stevenforehand » Wed Aug 23, 2017 12:10 pm

Hi Guys!

My poor 49 Cub seems to have a stripped bolt hole for one of the radiator bolts. What size helicoil would it take to repair this issue? I've used helicoils in the past for the head bolts without issue and thought it would work here as well.

Thanks!

Steven
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Bob McCarty
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Tractors Owned: Cubs, MH Pony, Shaw, Allis G, 1934 Silver King, JD LA and LI, Gibson D, David Bradley Tri-Trac
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Location: CO, Longmont

Re: What Helicoil for Radiator Bolt?

Postby Bob McCarty » Wed Aug 23, 2017 12:46 pm

The radiator bolts are 5/16-18. You can probably get the helicoils in several lengths so you'd need to measure the depth of the hole in the casting and order accordingly.
"We don't need to think more,
we need to think differently."
-Albert Einstein
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John *.?-!.* cub owner
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Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
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Re: What Helicoil for Radiator Bolt?

Postby John *.?-!.* cub owner » Wed Aug 23, 2017 12:49 pm

5/16 x18 thread. Do NOT drill too deep, they are above radiator tank. I figure you realize the tank part, but mentioned it anyway. If coils are too long, I slice top off with a Dremel cut off wheel after installing.
If you are not part of the solution,
you are part of the problem!!!
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BigBill
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Re: What Helicoil for Radiator Bolt?

Postby BigBill » Wed Aug 23, 2017 1:48 pm

I trim the helicoils to the proper length with a pair of cutting pliers before I install them if I don't have the proper length. Make the cut on an angle so the threads of the bolt will engage the helicoils naturally. I use a lacquer paint to glue in the helicoils. We did this on the 155mm howitzers for the us army while assembling them. Everything was helicoiled.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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Puffie40
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Tractors Owned: 1948 Farmall Cub
1939 Farmall H
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Location: BC Canada

Re: What Helicoil for Radiator Bolt?

Postby Puffie40 » Wed Aug 23, 2017 1:56 pm

John *.?-!.* cub owner wrote:5/16 x18 thread. Do NOT drill too deep, they are above radiator tank. I figure you realize the tank part, but mentioned it anyway. If coils are too long, I slice top off with a Dremel cut off wheel after installing.

If you do drill too deep, just use RTV sealant instead of neversieze for that bolt.
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