FURLOUGH SALE on HyWay aftermarket cylinder kit... ends Sunday at midnight!!!

[watsonr]

Most big bores run about 2mm larger

Exactly!

 

[redoakneck]

honest ? whats the diff in a big bore kit vs. standard kit?

takes a 91.5cc to 98.5cc (ms660) or a 78.5cc to 84cc (dolmar 7900)

3.14 x (diameter of piston/2) squared= area of piston surface, so the extra 2mm adds a bit of displacement


3.14 X (54/2) squared=2289 sq. mm

3.14 X (56/2) squared=2462 sq. mm

so the % gain is 2462/2289=107.5

multiply current cc of 91.5 times 1.075=98.4

 

[watsonr]

Do have any photos of the Hyway Big Bore 54mm 460 and standard 52mm 046/460?.

Not any that I took with my camera if that's what your looking for. Have you seen the thread Wigglesworth started on the 660 kit? They have the same look.

 

[Roanoker494]

Not any that I took with my camera if that's what your looking for. Have you seen the thread Wigglesworth started on the 660 kit? They have the same look.

http://www.arboristsite.com/chainsaw/229044.htm

Shortcut!!