Ducati Sporting Club UK > DesmoDue Race Series > DesmoDue - General Questions and Chat > Theoretical engine improvement???

[nelly]

I've now fitted two big bore kits and one thing i've noticed is that the RAM pistons that are supplied with the kits have no specifice valve cutouts.
Instead there is a central dome with a "trough" affair running around the crown. This trough provides the valve clearance, and means there is no specific orientation of the piston required in the bore or in relation to the heads.

I have been thinking that if the pistons were turned 180 degrees and the engine forced to run backwards the firing sequence of the motor would be altered and therefore possibly a "big bang" effect could be created??
There doesn't seem to be anything in the rules that would outlaw this and whilst bhp may not increase significantly, the torque and the way it is produced could give the bikes some serious drive and tractability out of the corners.
Whether the natural balance of the motor would be improved to enable a higher rev limit to be used remains to be seen but it could be a by product of the work.

The timing and pickup positions may need some work and possibly the carbs may need turning upside down for this to work effectively but neither task would be too difficult.

If there's any Desmo Due, or 600 owners out there who fancy trying this, please mail me. It could be done on other bikes to but it'd mean getting pistons made or machines to replicate the RAm pistons supplied with the big bore kits.
It'll need to be before noon on Friday as i'm out of the workshop after that.