60mm crank with 116mm long rod???????????

[mickdale]

when building a yamaha IT175 piston TS1 200cc top end would it be a good idea to use a 60mm crank as opposed a 58mm one ??????

will it affect the smooth charecteristics and/or improve performance?????

cheers
mick

[Train Driver]

Mark is fitting a 120mm rod into my 64mm crank
he said it will be so smooth you won't know the engine is running

[joespeed]

Mark is fitting a 120mm rod into my 64mm crank
he said it will be so smooth you won't know the engine is running

i have a 120mm rod with 18mm gudgeon pin,with a 64 mm stroke what piston are you going to use? and what cylinder?will the cylinder end up under the footboards.lol.
regards
joe

[Train Driver]

Special race-tour piston and all fitted together with a RT kit
should end up with 255cc
using a 24mm mikuni and clubman exhaust

[the-brickie]

What about using the off set cones to gain a few mm's?

[Rosi-C9]

I use an IT 175 piston on me TS1 200 too. Crank is a BGM 60/115/16 but the barrel is lowered 1,5mm at the base. Using a 1mm base and 1mm head gasket gives a squish around 1,2 mm with a central spark mmw head.

[mickdale]

thanks Rosi-C9
thats the info i need

cheers
mick