Engine

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xrcr
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Zip Code: 63348
Tractors Owned: 1950 Cub
1957 Farmall 400
1973 Farmall IH544

Engine

Postby xrcr » Sun Feb 09, 2020 5:51 pm

So I've finally got back on the cub since I got the engine freed up. Valves are out cleaned, lapped and back in just need to adjust. I decided to pop #4 rod and piston out since that was the cylinder that was froze. Bearings look good, crank journal looks good. Have a stuck compression ring. It's funny that the top ring is free and I removed the oil ring and re installed easily. Not sure how only the ring in the middle of those two can get stuck. I'm soaking in trans fluid and penetrating oil so we'll see. Any better ideas will be appreciated.

xrcr
Cub Star
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Posts: 53
Joined: Tue Aug 06, 2019 12:45 pm
Zip Code: 63348
Tractors Owned: 1950 Cub
1957 Farmall 400
1973 Farmall IH544

Re: Engine

Postby xrcr » Wed Feb 19, 2020 8:45 am

Still soaking piston, 2nd compression ring still stuck. on #4. To the best of my measurements cylinder is in the 2.62- 2.6234 range.
I'm not giving up but what is the opinion of just changing out the 2nd compression ring if it comes down to it. All advice is appreciated

Eugene
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Re: Engine

Postby Eugene » Wed Feb 19, 2020 10:48 am

Very small pin punch. Very gently tap one end of the ring gap, then the other direction. Soak more.

If the ring doesn't come loose, I would install the piston and run the tractor, lots of SeaFoam.
I have an excuse. CRS.

tst
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Re: Engine

Postby tst » Wed Feb 19, 2020 1:02 pm

try a propane torch if you are trying to save the ring, it is probably stuck because of old crud and carbon, the heat will loosen that up so it can be removed then you can clean things up

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SONNY
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Re: Engine

Postby SONNY » Wed Feb 19, 2020 1:41 pm

I second the heat! don't get carried away since you want to save ring! Heat , soak, tap around gently on it, heat soak, tap and it should come loose without damage.

xrcr
Cub Star
Cub Star
Posts: 53
Joined: Tue Aug 06, 2019 12:45 pm
Zip Code: 63348
Tractors Owned: 1950 Cub
1957 Farmall 400
1973 Farmall IH544

Re: Engine

Postby xrcr » Wed Feb 19, 2020 3:34 pm

Now why didn't I think of that. Sometimes you need to bounce ideas around to get reminded of some pretty standard protocols.. Thanks to all for the input
xrcr

xrcr
Cub Star
Cub Star
Posts: 53
Joined: Tue Aug 06, 2019 12:45 pm
Zip Code: 63348
Tractors Owned: 1950 Cub
1957 Farmall 400
1973 Farmall IH544

Re: Engine

Postby xrcr » Mon Feb 24, 2020 8:56 am

Ring is loose, rod/piston back in.Little heat made it happen. Now I wait for gaskets


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