Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 999 / 749 > 999r owners..........want 1120cc?

[wilf]

late 996 crank will go straight in, you'd need to use pankle RS rods to take the extra power though.

Standard pistons work fine but if you're going to do this you may as well fit the Pistal high comp ones to make the most of things as the crank/rods/pistons assembly has to be re-balanced or it will shake itself to bits.

top mod..... if you want the extra grunt.

but ... to make the most of it you'll need big exhaust system, flowed heads, and on and on...

[twpd]

I'd rather have a 748R with a Sigma 853R conversion thanks

Less is more as they say.

[andyb]

Im not saying i want it...........im just saying as we wait with baited breath for the "new" bike, its just a good ol Ducati add together a bit of this and a bit of that = 1120cc!

mind you...........

[twpd]

They probably had some left over 996 cranks and bodywork

Isn't that how they do things normally?

[andyb]

Originally Posted by twpd

I'd rather have a 748R with a Sigma 853R conversion thanks

Less is more as they say.

same thing on a smaller scale.

[twpd]

Originally Posted by andyb

same thing on a smaller scale.

Indeed. I couldn't find a "wry" smile smiley

[andyb]

Originally Posted by wilf

late 996 crank will go straight in, you'd need to use pankle RS rods to take the extra power though.

Standard pistons work fine but if you're going to do this you may as well fit the Pistal high comp ones to make the most of things as the crank/rods/pistons assembly has to be re-balanced or it will shake itself to bits.

top mod..... if you want the extra grunt.

but ... to make the most of it you'll need big exhaust system, flowed heads, and on and on...


or wait 6 weeks til the new bike is out.!!!!

when you say pankle rs rods........from what bike? arnt the 999r rods pankle? do they need to be a shorter length cos of the increased stroke?

[wilf]

The R pankle rods are good but not as strong as the RS ones. (998RS rods are ideal)

You don't need a different length con rod so you can use the 999R rods, the barrell needs to be spaced up with a bigger base gasket but because the squish clearance is normally to big on the motor out of the factory it helps take up some of the extra the you are trying to lose for the extra squish.

It is a bit of mucking about with base and head gasket sizes to get compression ratio and squish correct and you may even have to have the pistons machined down.

[andyb]

996 rs crank on ebay £600...................

[Ray]

Andy,

Just resign yerself to the fact that you're gonna be riding an old model very shortly

No amount of fiddling with that 998r mota is gonna change that.

You can join the old farts sitting round the camp fire at cadwell reminising about the old days..............I'll be there poring over me 998 brochure, hell I might even be able to find an old 999 brochure for ya!

Ray.