CP Piston Wall Clearances

[John1006]

I'm having my block bored over to 86.5 mm for my CP pistons with 9:1 compression. I bought them from a member here so I don't have any paperwork for them. What do I need to tell my machinist for the piston to wall clearances?

[di-devol]

Call cp.

msglength

[Pinggg]

.020 over for 86.5 mm i have the same piston on my built SR.

[di-devol]

That's the size of the bore, not the clearances. He is talking about how much space should there be between they pistons and cylinder wall when the piston is in.

[Pinggg]

Oops my bad, here are the specs i got with my pistons..

Clearance-0.0035

[John1006]

Ok that's close to what I was thinking, I tried calling CP, and every time just says waiting for operator. Then just rings forever. Anyone else have any more input on this? And is that in mm or inches?

[Pinggg]

Doesn't say anything after the number on my spec sheet..
But here give Dustin @ Brian Crower a call 619.749.9018 tell him Kris/Ping refer him.
He'll answer whatever questions you have. Goodluck!

[John1006]

Alright man, thanks a lot

[Pinggg]

And if you still need the spec sheet for the machine shop, pm me and i'll take a picture and send it to you.