farmall h compression

Howard Junkin · Feb 22, 2010

i just took a compression test on my 1945 h 3 cyl where 110 lbs and 1 was about 105 lbs. is this about what it should be?
thanks howard

old · Feb 22, 2010

For that old a machine those are not bad numbers. Plus if it was/is a distillate model then those numbers are very very good. For just a good old work tractor pretty much any thing over 100psi is good for the age

mhb@ufe · Feb 22, 2010

I have a 1947 with the gas engine (X1 suffix on ser no) and it has 120psi on all 4 cylinders.

Mark

randy hall · Feb 22, 2010

taken from my blue ribbon serviceman's book a gasoline h has 120# compression at cranking speed, the distillate model had 95# and if it has fire crater pistons it would have 145#.

Dave in CT · Feb 22, 2010

I"ve got a '47 with readings just about the same. I wouldn"t worry about it at all.

Red Mist · Feb 23, 2010

As long as all four are within 10% of each other (which, they are) you are fine. mike

farmall h compression

Howard Junkin

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old

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mhb@ufe

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randy hall

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Dave in CT

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Red Mist

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