The Ford Barn

38 coupe · 08-30-2022, 06:43 PM

While looking at my crankshafts I recently realized one of my 4" Merc cranks is offset ground with rod journals sized to standard prewar Ford. I concluded I have a 4 1/8 stroke crankshaft. I have rods and rod bearings for that setup, but not pistons. Looking around the internet all I find is forged pistons for that stroke, typically with a hefty oversize on the bore. Does anyone know where I can get reasonably priced cast pistons for 4 1/8 stroke, preferably with bore less than 0.125 over?

Thanks,
Fred

08-30-2022, 06:43 PM	#1
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 2,042	Cast 4 1/8 pistons? While looking at my crankshafts I recently realized one of my 4" Merc cranks is offset ground with rod journals sized to standard prewar Ford. I concluded I have a 4 1/8 stroke crankshaft. I have rods and rod bearings for that setup, but not pistons. Looking around the internet all I find is forged pistons for that stroke, typically with a hefty oversize on the bore. Does anyone know where I can get reasonably priced cast pistons for 4 1/8 stroke, preferably with bore less than 0.125 over? Thanks, Fred