bultaco piston/rapido 250 advice

[tavspeed]

hi all,anybody know what model bultaco piston is suitable to run in a lambretta,what are the issues with compression height,gudgeon pin size,top and tailing barrell,packers etc,there are some on ebay,cheap as chips 73mm ish,or mx quality for about £80,will be looking to rebore my rapido 250,and af dont have any pistons,but the bultaco piston is a option,cheers all.

[Yanker]

Hi

I 'think' it is from the 'Bultaco Montesa 250'.
Check with Rayspeed as they developed the 250 conversion.

Cheers