piston + cylinder tolerances

[blue72s]

In one of the last pages of Wayne's new book, there's a list of P + C tolerances - standard size 0, standard size 1 , standard size 2, oversize size 1, oversize 2 etc etc etc..

What do they mean, and how to choose?

thanks

[blue72s]

Wayne? You the author don't even know the answer do you?

[Bobboloo]

These are size groupings. After P+C's are made they are measured. Then a number is stamped into them.

Example:

On a 2 liter motor cylinder.
Standard size 0 would be 80.00 to 80.01mm
Standard size +1 would be 80.01 to 80.02mm.

On a 2 liter motor piston.
Standard size 0 would be 79.935 to 79.945mm
Standrad size +1 would be 79.945 to 79.955mm

So you see, you match P+C's by size group. 0 pistons with 0 cylinders. +1 pistons with +1 cylinders and so on.

[blue72s]

Thanks Bobby for letting me know.

Regards.