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.
Bessel
Motorsports
