« previous next »
Pages: [1]   Go Down

Author Topic: Another "Name That Piston" Game.  (Read 1698 times)

0 Members and 1 Guest are viewing this topic.

Offline jaguar

  • Old Timer
  • ******
  • Posts: 2,763
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
Logged

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,259
  • Central Texas
Re: Another "Name That Piston" Game.
« Reply #1 on: May 20, 2012, 08:06:04 PM »
Have not seen them either, very curious...
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline jaguar

  • Old Timer
  • ******
  • Posts: 2,763
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
Logged

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
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 ..
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,838
  • Saver of unloved motorcycles.
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 »
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline jaguar

  • Old Timer
  • ******
  • Posts: 2,763
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?
Logged

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,805
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?
Logged
If it works good, it looks good...

Offline Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
  • *******
  • Posts: 14,902
  • Bought her new 4/75
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.
Logged
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline seanbarney41

  • not really that much younger than an
  • Really Old Timer ...
  • *******
  • Posts: 10,805
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
Logged
If it works good, it looks good...

Offline jaguar

  • Old Timer
  • ******
  • Posts: 2,763
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.
Logged
Pages: [1]   Go Up
« previous next »