No, I am trying to create a dual engine made from two vertical shafted lawn mower engines and put the together to make 2 engines run by a single crankshaft, if that makes sense.
No what you are saying makes no sense at all.
You can not run 2 cylinders on a single crank.
You can bolt the 2 cranks together to make one crank.
Otherwise you need a two journal crank or a built up crank that runs knife & fork rollers aka old Harleys.
If you bolt the cranks together, one must have a ball race to keep the rods central in the bores or they will both need to be shimmed.
Changing the orientation of the crank has some problems unless you are using a late model engine that has pressure feed to all 3 journals.
Vertical shafts have a well on the top & bottom of the cases to provide lubrication to the upper & lower bush.
These will not work properly if the oil well is standing on it's side.
Some govenors will not work properly if they get rotated either.
There is a good reason why horizontal shaft engines cost nearly twice what a vertical shaft one does.
Vertical shafts are used almost exclusively on mowers.
Most are designed for a 10 year life at 50 hours a year ie 500 hrs = rebuild
Horizontal shaft engines are also designed for a 10 year life, at 40 hours a week so 4000 hrs = rebuild
The exception to this is Honda who build all their engines to horizontal shaft specs, so they are expensive which is why very few mower companies offer a Honda engine anymore.
People simply will not pay for the extra quality.
If you want to come clean about the end use then there are ways to change the orientation of the PTO which will be a lot easier than changing the orientation of the engine.
