Dyno Stuff

[koko64]

That combo makes a wonderful street motor.

[Truckedup]

No problem with a stock or mildly built 900 motor. They are very good motors with easy to use power.

Big bore gets you more torque than just hi comp and cleans up the cylinder at the same time. 944 or 950 and there is lettle added risk of losing cylinder seal.
lighten the flywheel and mount a bank of keihin FCR's and you have a great setup. IMHO one of the great engine combinations.

How much  compression can be tolerated on 91 octane pump gas with a cam similar to stock ? 9.5?  Will a lighter flywheels make the engine too lumpy at low speeds?

[ducpainter]

A stock Monster is supposedly 9.2:1, and will run fine on 87.

My 853 has Pistal pistons reportedly somewhere around 12:5:1 and I can run 91, without pinging, if I don't find 93.

[clubhousemotorsports]

On a street motor running pump premium 10.5:1 to 11-1 is a safe bet. some of the 11:1 hi comps can ping if you do not set it up correctly. These will be domed pistons so some times you can get away with higher compression ratios by dual plugging.  personally I would go with a known big bore/high comp  non- race piston and you should be fine.

The Ducati flywheel is about 4lbs stock, we have them cut down to 2 lbs and there is no issues with idle or being lumpy. There are aluminum flywheels that are measured in ounces and many owners love them but I personally like to keep a bit more mass.