Conmpresssion test results

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Arthur Dent
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Conmpresssion test results

Postby Arthur Dent » Sun May 10, 2015 11:00 am

Dry = 115 105 110 110
Wet = 130 115 130 150

This is my '57 Smoky. It's a cheap compression gauge, first time I have used it.

Eugene
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Re: Conmpresssion test results

Postby Eugene » Sun May 10, 2015 11:33 am

Good results. Results are a bit uneven, the #2 cylinder's compression didn't come up very much in the wet test. I would just continue with the Sea Foam treatment and work the tractor hard.
I have an excuse. CRS.

Bob McCarty
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Re: Conmpresssion test results

Postby Bob McCarty » Sun May 10, 2015 11:35 am

Is it possible to get a 150 reading on a Cub (cylinder #4-wet)?

Bob
"We don't need to think more,
we need to think differently."
-Albert Einstein

Arthur Dent
Cub Star
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Posts: 166
Joined: Wed Oct 09, 2013 3:20 pm
Zip Code: 62828
Tractors Owned: 1957 Cub
1960 Cub Lo Boy slope modified
1945 Farmall H
2002 NH TC25D
Location: Southern Illinois

Re: Conmpresssion test results

Postby Arthur Dent » Sun May 10, 2015 11:36 am

Yeah, I thought that 150 was a little high there Bob. Cheap gauge set I guess.

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tnestell
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Re: Conmpresssion test results

Postby tnestell » Sun May 10, 2015 1:56 pm

Bob McCarty wrote:Is it possible to get a 150 reading on a Cub (cylinder #4-wet)?

Bob

I have an engine that has been rebuilt many times. Decking the block and milling the head with each rebuilt has increased compression with .060 over pistons close to that. It can also be felt when pulling the engine through with a crank.

Arthur Dent
Cub Star
Cub Star
Posts: 166
Joined: Wed Oct 09, 2013 3:20 pm
Zip Code: 62828
Tractors Owned: 1957 Cub
1960 Cub Lo Boy slope modified
1945 Farmall H
2002 NH TC25D
Location: Southern Illinois

Re: Conmpresssion test results

Postby Arthur Dent » Mon May 11, 2015 2:26 pm

I changed the oil and ran the tractor around the farm quite a bit yesterday, I'll take another set of readings in a day or two (assuming this rain lets up) and see if I get similar results.
Of course I don't expect the oil change to have made any difference, just checking for repeatability of the results.


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