KZ900 69.25mm two (2) ring pistons - anyone?

I'm building a class specific engine and I can't go over 1000cc. I want to be as close to 1000cc as possible, without going over the 1000cc displacement.
I found a set of KZ900 pistons that are 69.25mm and 10.5:1 compression (first set I've ever seen)!
The pistons only have two rings, a compession ring and a oil ring.
The rings I received with the pistons look like their in great condition but I would like to have a spare set.
Anyone ever hear of this piston setup? Any ideas where I might look for a set of rings?


Thanks,

Buzz

What brand piston's are they?

I don't know the brand.

The only markings on the pistons are;

Z1 69.25

Buzz

Buzz

I can't remember very well. I think Henry Abe (or whatever) had a single compression ring. I think years ago K&L supply sold some. I'm not sure, but did the YOSH 998cc kit have a single ring, setup?

Is it a 1 peice cast oil ring? or a three peice?

Buzz

Are they a flat dome, cast piston? Not like the newer style, that fits into the combustion chamber?

The oil ring is three (3) piece and the pistons are raised dome. Look to be about 10.5:1 compression.



Buzz

Any of these?

kzz1p wrote:

Any of these?

Gotta love you guys and this site!!!

Yes those are the pistons.......only your's are shinnier(sp) than mine...

KruZer wrote:

Gotta love you guys and this site!!!

Yes those are the pistons.......only your's are shinnier(sp) than mine...

Buzz

You didn't say witch of the two sets (round dome or pop up)

Is it a normal skirt or a slipper style skirt?

UUU

you building a bonneville bike? i'm looking for a set of those just for that reason myself. there is an outfit in germany that is building them i remember seeing them a while back but i can't find them again.