Weight of pistons

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Magnusw
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Weight of pistons

Post by Magnusw » Wed Oct 19, 2022 4:24 am

Is there anywhere in the OLD , ORIGINAL Ford literature any information regarding the tolerance of the weight that the factory accepted when installing the piston/ rod assembly , when the model T was assembled at the factory in the teens and twenties?
I work on a 1919 engine and will use the lightweight cast iron pistons and rods that Ford introduced in 1924 resp. 1920.
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Kerry
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Re: Weight of pistons

Post by Kerry » Wed Oct 19, 2022 5:44 am

I'd have to say that never come across factory spec on weights, the Ford service book only stipulates that when replacing, that pistons are approximately the same weight.
I'm sure that would apply for a rod as well.
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KWTownsend
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Re: Weight of pistons

Post by KWTownsend » Wed Oct 19, 2022 10:00 am

It has been written that a well charged magneto magnet should be able to lift a Ford piston, or about 3 pounds.
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TXGOAT2
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Re: Weight of pistons

Post by TXGOAT2 » Wed Oct 19, 2022 10:16 am

I believe that Ford T engine assemblers made some effort to select and match piston weights. To what tolerance, I don't know. In the Model A era, considerable attention was given to selecting pistons and rods for weight matching.
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DanTreace
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Re: Weight of pistons

Post by DanTreace » Wed Oct 19, 2022 12:41 pm

This is a authoritative source, of the process for balancing pistons in 1914, would assume later methods got pistons closer in weight allowed.

F30D792E-736E-40F4-8499-A908A3CD8D5A.jpeg
The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford
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Re: Weight of pistons

Post by Been Here Before » Wed Oct 19, 2022 9:17 pm

"The finished weights of Ford pistons vary maximum , about six ounces . Each piston is weighed and marked on the head by a center - punch used without a hammer , with one , two , three , or four center marks , dividing the pistons into ... (page 145)"

Model T Ford: The Car that Changed the World - Page 145
Bruce W. McCalley · 1994
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