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Having chatted with a number of people well versed in rebuilding 18HP engines, the general consensus is NOT to use the OE con-rods because the little ends are just not reliable enough.
John Polson supplies new Arrow con-rods with significantly stronger little ends and floating gudgeon pins which will give peace of mind and reliability. The big ends are converted to modern shells and can be used directly on the OE crank without the need to harden the journals.
John Polson supplies new Arrow con-rods with significantly stronger little ends and floating gudgeon pins which will give peace of mind and reliability. The big ends are converted to modern shells and can be used directly on the OE crank without the need to harden the journals.