Piston identification assistance please

[Rgrpfdr1]

Got these pistons from PJ, but he couldn't remember what they were out of.

They measure 65mm across the top & 17mm from the top of the pin hole to the top edge of the piston.

They're ART pistons marked 74q.

Any help is appreciated!

 

[Rgrpfdr1]

Looking at putting them in a CB350 engine

 

[hillsy]

GS750 has a 65mm bore. That's one possibility.

 

[VonYinzer]

http://www.art-piston.co.jp/en/piston.htm

Try emailing the manufacturer?

 

[crazypj]

You don't measure across the top, the taper design (for expansion) means you need to measure about 8~10mm from bottom of skirt.
GS 750 Suzuki, 0.50mm oversize is what I think they are. ) I thought they were Suzuki pistons, just couldn't remember which ones )

 

[Rgrpfdr1]

I tried that VonYinzer. Never got a response so I thought I'd ask here.
Still gotta get new rings PJ. One of them broke when I was removing it.

 

[crazypj]

They could be Kawasaki KZ750, I've been collecting pistons for so long I forget what's what

 

[Nebr_Rex]

They could be Kawasaki KZ750, I've been collecting pistons for so long I forget what's what

KZ750/4 are 66mm.
What's the pin dia.?

 

[crazypj]

15mm
;D