Farmall Cub 1948

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Deano
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Farmall Cub 1948

Postby Deano » Mon May 29, 2023 4:49 pm

Hello, I'm Deano
I am trying to find out if I can sand the head and block to help with sealing the two together? I put a new gasket in and I had to pull it back apart due to no compression. Thought about putting the old gasket back on. Any advice?

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Don McCombs
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Tractors Owned: "1950 Something" Farmall Cub
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1948 Farmall Super A
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Location: MD, Deep Creek Lake

Re: Farmall Cub 1948

Postby Don McCombs » Mon May 29, 2023 5:20 pm

Did you use any sealant on the gasket?
Don McCombs
MD, Deep Creek Lake

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52DAVE
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Re: Farmall Cub 1948

Postby 52DAVE » Mon May 29, 2023 6:08 pm

Is there no compression because the head gasket leaked or some other reason? If it were me I might try the new one again (not recommended by most mechanics I know) if $ was a major issue but there is no guarantee it will seal. I was told to use Permatex aviation gasket sealer on a SA years ago. It was the only way I could get the water jacket to seal at the head.

52DAVE
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Re: Farmall Cub 1948

Postby 52DAVE » Mon May 29, 2023 6:14 pm

Also all of the old gasket material needs to be off both surfaces. I wouldn't use a belt sander or any thing that might make ether surface uneven.

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Glen
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Re: Farmall Cub 1948

Postby Glen » Mon May 29, 2023 6:45 pm

Hi,
You can use a long straight edge on the head and block surfaces when the head is off, and see if they look flat.
You didn't say if the piston rings and other engine parts are new or old.
If the rings are wornout or stuck, the engine might have low compression.
The head bolts go into the engine water jacket, and need non hardening sealer on the bottom 1/2" of the bolt threads.
Below is a post I wrote on with info about putting the head on, and the sealers. My post is part way down the page.

viewtopic.php?f=1&t=102173&p=807860

tst
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Re: Farmall Cub 1948

Postby tst » Mon May 29, 2023 8:00 pm

did it run or have compression before you changed it

staninlowerAL
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Re: Farmall Cub 1948

Postby staninlowerAL » Mon May 29, 2023 9:12 pm

Head service info from the manual:
head svcPage-01-13.jpg
head svcPage-01-131.jpg
Click on the pics to enlarge.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)

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Barnyard
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Re: Farmall Cub 1948

Postby Barnyard » Mon May 29, 2023 9:49 pm

If you want to spend a great weekend with many of the members from this site, you might want to mark your calendar for June 1st, 2nd, & 3rd for our CubFest just west of Cincinnati. The guys who will be attending will be able to describe what all you need to do. http://www.barnyardbash.com
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.

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Don McCombs
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Posts: 17547
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Farmall Cub 1948

Postby Don McCombs » Tue May 30, 2023 4:18 pm

Barnyard wrote:If you want to spend a great weekend with many of the members from this site, you might want to mark your calendar for June 1st, 2nd, & 3rd for our CubFest just west of Cincinnati. The guys who will be attending will be able to describe what all you need to do. http://www.barnyardbash.com

And bring your Cub with you.
Don McCombs
MD, Deep Creek Lake

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Proud Member of Maryland Chapter 39

The best teachers are those who show you where to look, but don't tell you what to see.
A. K. Trenfor


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