Hey guys, I think i've made my decision on the engine for the dynamark. I think i am going with an opposed twin. I will keep you updated on how it fits, but for now, the plan is as follows:
Get carbs from at least a 13hp ohv (2) for dual carbs
I will measure the bore to see if it is ovaled. If it is still round, then I will be honing it and putting rings in
Porting (especially on the exhaust, intake will be left alone to better mix the fuel and air)
de grease everything
exhaust will not be a 2 into 1, instead i will run 1" or 1.5" pipe, one for each cylinder, side by side and do a side dump either under or behind the foot board. Y'all picture what i am saying I hope.
I forgot to mention stiffer valve springs and hopefully a cam with a little higher travel. Maybe from a 46 cube?
If anyone has experience with doing something like this, any help or suggestions is appreciated