Buda connecting rod bearings

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   The HD344, 6000 and 7000 motors that I have worked on use CB700P connecting rod bearings sold by Cleivite, Sealed Power, Federal and others.  These bearings have an oil hole for lubricating the wrist pin.  There is another connecting rod bearing with an off center slot.  I assume this is for lubricating the cylinder bore on a non Allis Chalmers Buda motor.  This would require a different oil hole position on the connecting rod.  Anybody know the history and if the slotted bearing was used on any AC equipment.  I would also like to know the reason for the deep dish vs shallow dish pistons for the 6000 and 7000 motors.  

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Dozer Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 16 Aug 2011 Location: SW New York Points: 689	Post Options Post Reply Quote Dozer Report Post Thanks(0) Quote Reply Topic: Buda connecting rod bearings Posted: 10 Dec 2015 at 7:14am
	The HD344, 6000 and 7000 motors that I have worked on use CB700P connecting rod bearings sold by Cleivite, Sealed Power, Federal and others. These bearings have an oil hole for lubricating the wrist pin. There is another connecting rod bearing with an off center slot. I assume this is for lubricating the cylinder bore on a non Allis Chalmers Buda motor. This would require a different oil hole position on the connecting rod. Anybody know the history and if the slotted bearing was used on any AC equipment. I would also like to know the reason for the deep dish vs shallow dish pistons for the 6000 and 7000 motors.

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Ian Beale Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 03 Oct 2011 Location: New South Wales Points: 993	Post Options Post Reply Quote Ian Beale Report Post Thanks(0) Quote Reply Posted: 10 Dec 2015 at 3:20pm
	Dozer I was told by an Allis supplier that you could use either when I was looking for parts for a "Forty Five" grader (Buda engine). I haven't done a comparison though.

donoman Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 18 Feb 2015 Location: New Zealand Points: 117	Post Options Post Reply Quote donoman Report Post Thanks(0) Quote Reply Posted: 11 Dec 2015 at 5:12pm
	My HD6G 25013 was factory fitted with the shallow dish pistons, I was always under the impression that they were "Turbo" pistons as fitted to the 7000 and 11000 motors, and to simplify parts they used them in the later non turbo motors

Dozer Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 16 Aug 2011 Location: SW New York Points: 689	Post Options Post Reply Quote Dozer Report Post Thanks(0) Quote Reply Posted: 11 Dec 2015 at 5:52pm
	The HD344 has the combustion chamber in the cylinder head. The 6000 motor has the combustion chamber in the piston. I am trying to understand why there are 2 different dished piston configurations? The slotted connecting rod bearings are another thing I am trying to understand. I know the HD344 connecting rods are different than the 6000 and 7000 connecting rod. The 6000 and 7000 motors have a larger diameter wrist pin. That makes me think they were addressing a problem with the wrist pins. If the slotted bearings are used they would block the oil hole to the wrist pin. Yes I know they fit but they are not interchanbible. That means there should be a third connecting rod type.