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Author Topic: Another "Name That Piston" Game.  (Read 1697 times)

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Offline jaguar

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Another "Name That Piston" Game.
« on: May 20, 2012, 07:59:37 PM »






Seller had them listed as stock "sandcast" pistons.
Said that they were removed from a 70 Cb750, so I already know that the seller either A doesnt know what he is talking about or B is just slapping key search words on everything.

They very much look CB750 but i have never seen pistons with domes like that.
Anyone have any idea what they are?
Thanks so much
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Offline Stev-o

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Re: Another "Name That Piston" Game.
« Reply #1 on: May 20, 2012, 08:06:04 PM »
Have not seen them either, very curious...
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Offline jaguar

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Re: Another "Name That Piston" Game.
« Reply #2 on: May 20, 2012, 08:55:30 PM »
I know the ART marking
I was more interested in the dome
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Offline 754

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Re: Another "Name That Piston" Game.
« Reply #3 on: May 20, 2012, 09:55:26 PM »
 I am not understanding what they ran in without any valve cutouts.!! what diameter are they.. I assume stock bore size, but appear to be able to run in a CB750 ..
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Offline Don R

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Re: Another "Name That Piston" Game.
« Reply #4 on: May 21, 2012, 09:01:57 PM »
« Last Edit: May 21, 2012, 09:05:04 PM by Don R »
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Offline jaguar

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Re: Another "Name That Piston" Game.
« Reply #5 on: June 11, 2012, 07:04:19 PM »
Still not sure what they are.
CB350 pistons cut down?
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Offline seanbarney41

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Re: Another "Name That Piston" Game.
« Reply #6 on: June 11, 2012, 07:56:26 PM »
Jaguar, what size are they?   Mine are 64mm/812cc.  I bought mine from a forum member here and they came out of a KO motor.  Mine have 1 piece oil ring that I cannot find a replacement for.  Here is a pic comparing the dome to stock...what kinda compression ratio are we looking at here?
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Another "Name That Piston" Game.
« Reply #7 on: June 11, 2012, 08:17:45 PM »
If your oil ring land is 2.5mm just use CB350 twin oil rings. 3 Piece.
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Offline seanbarney41

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Re: Another "Name That Piston" Game.
« Reply #8 on: June 11, 2012, 08:33:58 PM »
thank you Jerry, for finally confirming cb350 oil ring is 2.5mm, I had not been able to find that
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Offline jaguar

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Re: Another "Name That Piston" Game.
« Reply #9 on: June 11, 2012, 09:14:18 PM »
Ill measure them tomorrow when im in the shop.
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