MotoGP » Petrucci makes Ducati MotoGP debut

“Some parts could be delivered directly to Laguna, and some other parts will be delivered in the following races” - Filippo Preziosi.

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me - Unregistered

July 19, 2012 12:30 PM

"has been designed to accept future upgrades without breaking the seals"

Interesting comment, is there any info out there regarding either which parts teams are allowed to change or where the seals are placed on the engines?


July 19, 2012 1:37 PM

@me you can find the regulations on the FIM website, but if you can't be bothered to look it boils down to this:

Cylinder head covers must be sealed so the timing system is not accessible.

The timing drive system must be sealed so it is not accessible.

Cylinder head and cylinder blocks must be sealed so that they can't be removed from the engine.

The crankcase must be sealed so that it can't be opened.

IOW crank, conrods, pistons, valves, camshafts and any timing mechanisms for the valves can't be swapped. Anything you can get to without breaking the seals is fair game. If the team break any of the seals then the engine will be counted as a new one once resealed.

Oh and from a couple of races back the six engines must all have the same bore and stroke.


July 19, 2012 1:48 PM

Sorry, I was wrong about the bore and stroke. In the amended version of the regs from three days ago it says that each MSMA member must retain the same bore and stroke until the end of the 2014 season.

If the rumours about Ducati being well below the full litre are true, then this is very bad news for Ducati. However the very fact that Ducati aren't protesting this clause would seem to suggest that they are close to the full litre.


July 19, 2012 1:53 PM
Last Edited 1224 days ago

@D16 the MSMA entries can change any part that they can get at without breaking the seals. This would mean transmission parts, water pump, oil pump, ignition parts, etc. It's only the major mechanical parts of the bits of the engine that actually makes the power that are covered by the seals.

This only covers engines that are already sealed. Any engines that haven't been sealed year and are therefore unused are open to changes in any part so long as they retain the bore and stroke.

The comment about making it possible to change parts without removing the seals would seem to suggest that there are some parts that Ducati would be allowed to change that they currently can't get at.

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