The sled is a 1975 Merc 340 sr. I wish it was a sno twister l[img]i/expressions/face-icon-small-smile.gif[/img]l Im not sure the stroke rod lenght and bore but ill check. The motar is in peices cause i had to replace a crank bearing. The crank is layin on the bench right now.

 

Ok heres the info.
Bore 2 7/16 in
stroke 2 in
rod lenght 3 7/8
its weird, everything was an exact measure. No metric stuff here. lol