4 1/2 pistons

molinegb · Jan 13, 2014

Does anyone know of what used 4 1/2 pistons? 6 inch piston with 1 1/2 pin diameter and 3 inch compression height. The originals are Buda cast pistons but are in bad shape.

Anonymous-0 · Jan 13, 2014

I think some big old Allis's might have used them, but can't remember which.

ecar · Jan 13, 2014

perkins A4.318 used 4.5 inch pistons- it has about a 5 inch stroke though

donjr · Jan 13, 2014

Massey 55's had a 4 1/2 x 6" engine, and the 1080 and 1085 had a 4 1/2 x 5" B&S, and the T-9 and IH650 series used a 4 1/2 x 5 1/2" set of jugs....

Ian Beale · Jan 14, 2014

AC 45 grader was 4 7/16"bore and 5 7/16" stroke in the Buda based 516cid 6 cylinder engine.

Should be the same for 344 cid 4 cylinders too.

Mike M · Jan 14, 2014

John Deere B from 1941 to 1946 ? had 4.5" cast iron pistons originally. Not sure if the after market has any replacements for them either ?

4 1/2 pistons

molinegb

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Anonymous-0

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ecar

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donjr

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Ian Beale

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Mike M

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