Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > Supersports: SS / SuperSport / Supersport 950 > Piston slap

[tranquil_rage]

Get the vernier gauges out and check clearances. It's the only way to be sure about the bore and the piston itself. If both are within limits then new rings should be the sum of it.

[Jon]

Originally Posted by tranquil_rage

Get the vernier gauges out and check clearances. It's the only way to be sure about the bore and the piston itself. If both are within limits then new rings should be the sum of it.

Thx TR

[rockhopper]

I thought it was a common problem on these engines and nothing to worry about - chances are it will start doing it again almost as soon as you have fixed it.

[rockhopper]

Apart from the machining marks wearing off is there any sign of compresion leaking past the piston? If not then there is nothing to be gained by new rings.

[AK]

Jon did you listen to most of the bikes in the paddock this year.
most have a bit of piston slap on the front cyl.
froggys was so bad i couldnt listen to it in april on the dyno but he has raced it all year and it hasnt got any worse.
as you have it apart, if it was me i would put a piston kit in it which includes piston, rings and pin which is not a lot more expensive than the rings. make sure you get the right year tho as there are 2 different engines as we know from the big bore kits last year!
otherwise just carry on using it like everyone else seems to do

[phil_h]

You are unlikely to get any wear on the bore because its plated, so dont ask for the barrel to be rebored
All the essesses have a tendancy to slappy pistons, and the noisy ones are the most powerful !
If you are not using oil, and the noise gets less when the engine (piston !) is hot, then dont worry, they really all do that sir.
If you're really worried, I could sell you some used spares, but they'll be the same within a 500 miles.

[Scooter916]

Echo Alan and Phil. Sounds awfull but normal.
Glyn

[Jon]

Well food for thought. I think I'm going to leave it as it is. I might just ship the heads and barrels off to nelly for a health check.