8 cylinder 4 double ended pistons with sliding bore and rotary belt/gear driven valve. (Green) I got this idea when drawing the sewing machine needle. Quite an unusual engine design. 2 part model, this part is the block, heads and all moving parts. #block #bore #boxer #chevy #con_rod #conrod #crankshaft #cylinder #engine #flywheel #ford #opposed #piston #rotoary #slide #slider #subaru #toyota #valve
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