DIO MONSTER RACING PISTON PROBLEMS
54MM piston is too tall and will hit crankshaft. The skirts must be shaved to supply clearance for full piston/crank rotation.
OPENING THE INTAKE PORTS BY 10%
I am enlarging the aluminum crankase intake ports by 10% to see if it will increase performance at FULL POWER.
DIO 54mm Piston Clearance TIPS
Small aluminum corners have been removed and piston has full un-opposed travel throughout its 360 degree range. Cylinder deck height will me measured and fitted next.
(3)- Mating the 54mm cylinder to Stroker Crank
This is the tricky part of compressing both rings while trying to manouver a 4 kilo iron cylinder above them. It does not help with my slightly stiff, 50 year old hands. It should be a snap for you young guys. RH