Z1OwnersClub GB

Posted: **Fri Oct 02, 2015 1:13 pm**

I bought some of those pistons from cruzin image in Japan a while ago and I've had barrels rebored by SEP to their size.
The help I need is, I want to make sure the end gap size is within tolerance, but I can't find what the minimum should be, the workshop manual says the max is 0.7mm, but there's no minimum, can anyone advise how I work it out?
Cheers

Posted: **Fri Oct 02, 2015 2:28 pm**

Also, how do I know which is the top ring and the second ring?
They're usually marked, but these don't seem to be.
cheers

Posted: **Fri Oct 02, 2015 2:50 pm**

the book says, ring gap.

1000cc
0.016in to 0.032
0.4mm to 0.8mm

900
0.012in to 0.028
0.3mm to 0.7mm

The standard 2nd ring has a notch on the end.

Posted: **Tue Oct 06, 2015 12:00 pm**

Cheers, I'll go with 0.3 to 0.7.

Posted: **Tue Oct 06, 2015 6:00 pm**

top ring is the one with the silver outside edge

Z1OwnersClub GB

Piston Ring end gap size, 810 kit.

Piston Ring end gap size, 810 kit.