Update on new 1948 cub

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1948cubnovice
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Tractors Owned: 1948 farmall cub
1948 farmall cub
Allis Chalmers c

Update on new 1948 cub

Postby 1948cubnovice » Thu Mar 10, 2022 9:18 pm

Had some time to work on the new cub today all the intake valve were stuck . It also has a stripped head bolt going to put a Helicoil in that's the only way i can think to fix that . There was a lot of trash on top of the valves but no rust in the cylinders .
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Pap
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I could not say tractor when I was 2 years old so I called it Err Err.

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Re: Update on new 1948 cub

Postby Pap » Fri Mar 11, 2022 9:09 am

That ain't pretty. Looks like you are going to get to have a little bit of fun.
Are We Having Fun Yet ? :D
'47 cub ( Err Err )

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Re: Update on new 1948 cub

Postby CSA_CUB » Fri Mar 11, 2022 10:51 am

WISHING YOU LUCK!
Patrick Elvis
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:tractor:

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Bill V in Md
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Re: Update on new 1948 cub

Postby Bill V in Md » Fri Mar 11, 2022 11:43 am

I reviewed some of your previous posts and noticed that you had lapped the valves sometime around October of last year. Did this buildup happen since then?
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Re: Update on new 1948 cub

Postby Jim Becker » Fri Mar 11, 2022 12:51 pm

Bill, I think this is a different tractor, newly acquired.

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Bill V in Md
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Re: Update on new 1948 cub

Postby Bill V in Md » Fri Mar 11, 2022 1:32 pm

Jim Becker wrote:Bill, I think this is a different tractor, newly acquired.

Aha, that’s what I get for being nosey.
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1948cubnovice
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Tractors Owned: 1948 farmall cub
1948 farmall cub
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Re: Update on new 1948 cub

Postby 1948cubnovice » Fri Mar 11, 2022 8:06 pm

Bill V in Md wrote:I reviewed some of your previous posts and noticed that you had lapped the valves sometime around October of last year. Did this buildup happen since then?



No Sr. new cub just picked up last week .

1948cubnovice
Posts: 42
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Tractors Owned: 1948 farmall cub
1948 farmall cub
Allis Chalmers c

Re: Update on new 1948 cub

Postby 1948cubnovice » Tue Mar 15, 2022 9:22 pm

Just an update for the cub got it cleaned up up and back to get her compression test didn't go as well as I had hoped
No 1 60 lbs
No 2 30 lbs
No 3 30 lbs
No 4 50 lbs
What does everyone think I should do now?

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Re: Update on new 1948 cub

Postby Bob McCarty » Tue Mar 15, 2022 9:47 pm

If that was dry, you need to do a wet compression test to determine if it's rings or valves.
"We don't need to think more,
we need to think differently."
-Albert Einstein

1948cubnovice
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Tractors Owned: 1948 farmall cub
1948 farmall cub
Allis Chalmers c

Re: Update on new 1948 cub

Postby 1948cubnovice » Tue Mar 15, 2022 9:54 pm

Bob McCarty wrote:If that was dry, you need to do a wet compression test to determine if it's rings or valves.

That is wet dry was much worse

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Re: Update on new 1948 cub

Postby SamsFarm » Wed Mar 16, 2022 12:53 am

Time to measure the bores and pistons to see if they are in or out of spec.

And measure ring gaps with the rings removed from the pistons and set in a bore, squared up using the face of a piston in the bore.

With that data you can decide if you need just new rings, or a bore job, new pistons and new rings!

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Re: Update on new 1948 cub

Postby tst » Wed Mar 16, 2022 8:29 am

kinda a mess on the valves, you may want to pull those valves and check seat condition

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Re: Update on new 1948 cub

Postby Eugene » Wed Mar 16, 2022 9:35 am

tst wrote:kinda a mess on the valves, you may want to pull those valves and check seat condition
I would start with the valves first. Check the condition of the valve faces and seats. The wet compression test should have been much better if the rings were the major fault.

You may still have to do a major engine overhaul. Valves first.
I have an excuse. CRS.

1948cubnovice
Posts: 42
Joined: Sat Oct 02, 2021 10:10 pm
Zip Code: 38469
Tractors Owned: 1948 farmall cub
1948 farmall cub
Allis Chalmers c

Re: Update on new 1948 cub

Postby 1948cubnovice » Wed Mar 16, 2022 11:40 am

Eugene wrote:
tst wrote:kinda a mess on the valves, you may want to pull those valves and check seat condition
I would start with the valves first. Check the condition of the valve faces and seats. The wet compression test should have been much better if the rings were the major fault.

You may still have to do a major engine overhaul. Valves first.


I may just do an engine swap I have a second engine that came with the first cub I got going to pull the head and see if it looks any better

1948cubnovice
Posts: 42
Joined: Sat Oct 02, 2021 10:10 pm
Zip Code: 38469
Tractors Owned: 1948 farmall cub
1948 farmall cub
Allis Chalmers c

Re: Update on new 1948 cub

Postby 1948cubnovice » Sat Mar 19, 2022 5:53 pm

Anyone know a way to repair a missing drive lug on a magneto


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