I was talking about this kit today a work and then thought it's only a 73mm bore and that is not right... The Tinity 265 big bore kit has a 75mm piston on the first bore and has a 77mm on the last bore, and you have to bore out the case to fit the big 265 sleeve. The CT 240 has a 72mm piston on the first bore and a 73mm bore on the last bore.
CT 240
72mm bore, 57stroke = 232
73mm bore, 57stroke = 239
Tinity 265
75mm bore, 57stroke = 252
77mm bore, 57stroke = 265
MY Ct 240 with a 72.50 piston, and a 4mm stroker = 252cc
This 265 kit is just a Wossner 73mm piston for my 240 on the last bore and the same Cometic copper head gasket. How far can this sleeve be bored out and can you get a bigger piston for it over 73mm, and the 73mm copper head gasket wont fit any thing bigger then a 73mm piston. So can you find a bigger copper head gasket for it if you can get a bigger piston??? Also do you have to bore out the case to fit the big sleeve or is this just a 240 sleeve on its last bore...