Ducati Dealer
GTL
Posts: 496
Join Date: May 2005
Location: Petersfield - Hants
Mood: Just fallen in love with road riding again!
As nelly says... i don't think that JE or Pistal do a 'drop in piston'
I think pistal list one but it is too far out on weight.
You have to be carefull as some manufactures list pisons as 'Drop in' but they mean it has the same deck height so you shouldn't have a problem with squish clearance - this is for engine builders that dont re-measure and reset the squish (not a good idea).
There is not a great deal of gain by fitting Hi comp pistons on the 'stretta motors, If you get the compression ratio/squish measured you may be surprised how far out they are from perfect. They are built with very safe clearances and can often be optimised to get a fair bit more compression with the pistons you have. (and you get a better flame path and more efficient combustion chamber with flatter topped pistons.)
Best tuning options.. minimise squish, minimise valve clearances, dial in cams, large exhaust system (54-57 ideal), pcIII and custom map.
Wanna get carried away... fit light flywheel, port heads & match inlets & Exh. ports.
Steve's just done a 999R Xerox - 57mm termi, PCIII, cam's dialled in (were a long way out too!) with only 600 miles on it made 155 RWBHP on our dyno, made 132 'out of the box'
MEGA!