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cylinder compression
#1
Quite a regular
Quite a regular

bear
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I just bought a 1949 deluxe touring sedan with a 288. im getting 85 to 90 lbs in all 8 cylinders.Does this indicate that a rebuild is necessary?I understand that factory compression is around 110.

Posted on: 6/10 17:06
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Re: cylinder compression
#2
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Ernie Vitucci
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Good afternoon...How does she run, idle,does she smoke...other than Camels?
Ernie in ARizona

Posted on: 6/10 17:47
Caretaker of the 1949-288 Deluxe Touring Sedan
'Miss Prudence' and the 1931 Model A Ford Tudor 'Miss Princess'
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Re: cylinder compression
#3
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John
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Usually it is more important for all cylinders to be close to the same compression. If it runs well and doesn't smoke, I'd say your okay for now.

Posted on: 6/10 17:52
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Re: cylinder compression
#4
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Ken_P
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Agree with John.

Did you perform the test with the engine throttle plates open?

You can also put a squirt or two of oil down each spark plug holes- if the compression goes up, the wear is in the ring/cylinder wall; if no change, a simple valve job might improve your numbers.

That said, as discussed, how it runs is a bigger piece of the puzzle.

Posted on: 6/10 18:55
1937 120 1092 - Original survivor for driving and continued preservation.
http://packardinfo.com/xoops/html/mod ... p?topic_id=16514&forum=10

1937 115 1082 - Total basket case, partial restoration, sold Hershey 2015
https://packardinfo.com/xoops/html/mod ... &order=ASC&status=&mode=0
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Re: cylinder compression
#5
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Fish'n Jim
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No, that's probably very good, since the compression ratio is about 7:1. 102 psi would be 100%, zero loss, and that's not practical.

Posted on: 6/10 19:56
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