-
Select as long as a rod as possible to minimize the
frictional losses from side loading and cut the engine's mechanical
noise.
-
Select the lightest
reciprocating components for the bottom end.
-
Use an effective crank damper
-
Use an oil pan that keeps the
oil away from the bottom end rotating assembly as entertainment will
cost big power and may lead to failure.
-
Go for as high a compression
ratio as possible as it will off-set the engine's reduced mechanical
efficiency due to it's greater piston friction.
-
Use cylinders heads with valves
as large as possible as there are a lot more cubes to feed.
-
Be sure to tighten up the cam's
lobe centerline angle (LCA) from whatever was optimum before by
about 1 degree for every 16 cubic inches of capacity increase.
-
Increase valve lift at least the
same proportion as the increase in displacement.
-
Make sure the induction system
has enough flow capability to handle the extra cubic inches.
-
Try to keep the induction system
cool as this makes more difference with a stoked engine.