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Cub Block Repair

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Kyle Delong
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Cub Block Repair

Postby Kyle Delong » Fri Mar 04, 2022 9:28 am

So I’ve got a crack on the front right side of my cub block. It appears to have been welded before. Is there anyway I could fix this crack to keep it from cracking worse?

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SamsFarm
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Re: Cub Block Repair

Postby SamsFarm » Fri Mar 04, 2022 2:41 pm

It is hard for anyone to give you tips without being able to see it
1968 Cub Fast-Hitch

Kyle Delong
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Joined: Sun Jan 16, 2022 6:39 pm
Zip Code: 46135
Tractors Owned: 1948 Cub Fast Hitch
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Woods 42F-2 Mower

Re: Cub Block Repair

Postby Kyle Delong » Fri Mar 04, 2022 3:38 pm

Sorry. Im not able to post the pictures of it. It says its too big.

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Don McCombs
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Re: Cub Block Repair

Postby Don McCombs » Fri Mar 04, 2022 4:17 pm

There are several programs (appa) you can use to reduce the file size of photos. Irfanview is one of them.
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staninlowerAL
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Re: Cub Block Repair

Postby staninlowerAL » Fri Mar 04, 2022 8:44 pm

Welding cast iron at a stress point does not usually provide satisfactory results IMHO. You can probably source a good block for less than a professional welding repair. Either way, there's a lot of work to swap the parts from the cracked block to another one. The up side is a chance for a quality total engine rebuild that will probably outlast your lifetime.
Stan in LA (lower AL)
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Eugene
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Re: Cub Block Repair

Postby Eugene » Fri Mar 04, 2022 9:03 pm

viewtopic.php?f=1&t=107340&hilit=engine+brace

Perhaps, if not broken clear through and no oil or coolant leaks.
I have an excuse. CRS.

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Re: Cub Block Repair

Postby Jim Becker » Fri Mar 04, 2022 9:16 pm

Kyle Delong wrote:. . . Is there anyway I could fix this crack to keep it from cracking worse?

Back to the original question, a number of the Cub engines have been reinforced with an external brace. The braces have been custom-made by some of the farmallcub.com members. Here is an old topic that discusses, has pictures, and suggests what may be done to get a pair.

viewtopic.php?f=1&t=83180

Bezirk is the member that most recently made some. I have no idea whether he is still willing to make up a set. (It has been a couple weeks since he has been signed in here.) You might post an inquiry in The Vine and see if anyone can help you out.

Gary Dotson
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Re: Cub Block Repair

Postby Gary Dotson » Sat Mar 05, 2022 8:47 am

Kyle, you should check with J P tractor salvage (forum sponsor) they used to offer a reconditioned block, cleaned, inspected and bored, complete with new pistons and rings for a very appealing price, $750 a couple years ago. An absolute bargain, in my book. Call and ask if they are still available.

CharlieK
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Re: Cub Block Repair

Postby CharlieK » Sat Mar 05, 2022 9:40 am

^^^^^^^^^^^^^^^^

THAT IS A VERY GOOD DEAL
get er done; life is good

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ricky racer
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Re: Cub Block Repair

Postby ricky racer » Sat Mar 05, 2022 5:47 pm

Typically, if you have a crack in a block to repair, if you find the very ends of the crack, you can drill a small (1/8") hole at each end of the crack to stop the crack from continuing. Once the holes have been drilled, the crack can be cleaned and prepped for welding. Cast iron usually requires a preheat for welding or brazing to keep from forming additional cracks. Welding old cast iron can be pretty difficult.
Another thing to consider is if any cracks are internal, there may not be any way to access those cracks rendering the block junk. Another block might be the best route to take.
If you do weld the block, I'd suggest pressurizing the block coolant passages to verify there are no internal leaks.
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muleboss
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Re: Cub Block Repair

Postby muleboss » Sun Mar 06, 2022 12:14 pm

I have a block in Kansas. The engine turned ok when I stripped it. I know nothing about it. You can have it if you come get it.

Clemsonfor
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Re: Cub Block Repair

Postby Clemsonfor » Sun Mar 06, 2022 4:17 pm

muleboss wrote:I have a block in Kansas. The engine turned ok when I stripped it. I know nothing about it. You can have it if you come get it.

What a deal!! If gas wasn't sky high it would of been a good time to head across country grab a needed part and met a fellow and head back. I have no idea where the OP is maybe he is close?

staninlowerAL
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Tractors Owned: Cubs: (3)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (2)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: Cub Block Repair

Postby staninlowerAL » Sun Mar 06, 2022 4:26 pm

Clemsonfor wrote:
muleboss wrote:I have a block in Kansas. The engine turned ok when I stripped it. I know nothing about it. You can have it if you come get it.

What a deal!! If gas wasn't sky high it would of been a good time to head across country grab a needed part and met a fellow and head back. I have no idea where the OP is maybe he is close?

Profile says Indiana. Agree, it's a good deal. I once drove from LA (lower AL) to KY for parts and they were not free! :D
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)

Rob in NH
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Re: Cub Block Repair

Postby Rob in NH » Mon Mar 07, 2022 11:14 pm

If you look on YouTube there is a good video on repairing a crack in cast iron https://www.youtube.com/watch?v=Pq0wfU4ZaKk
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CharlieK
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Re: Cub Block Repair

Postby CharlieK » Tue Mar 08, 2022 11:59 am

use a nickle rod when welding cast iron
get er done; life is good


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