Topic: differences in cb750 pistons

[norton]

I was wondering what the differences were between 1978 cb 750 f pistons and 1979 pistons and the 1976 pistons.
thanks for any insight ,,1978 standard piston rings seem to be a little hard to come by.

[Lumbee]

...hey Norton, I did a rebuild on my 78K this past spring.  I think all the 77/78's have two regular rings, and then what they call an "oil" ring in the 3rd (lowest) slot.  Pre 77 they had 3 regular rings, and u'r right, theres plenty of those out there.  Not sure about anything past 78...

[bryanj]

All the 750's have the same number and type of piston rings but the width of the rings altered hence the problems. As far as i knowF2 and F3 pistons are different and most of the rest look similar BUT I am not a 750 man so that aint gospel