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650 lifters & pushrods same as 750?

Norton Models (not Commando or P11)

650 lifters & pushrods same as 750?

Postby jseng1 » Thu Feb 16, 2017 2:14 pm

Are the 650 pushrods & lifters are the same as an Atlas (or Commando) 750.

Someone wants to use my cam kit in his 650 & I need to know if everything fits.

It could be that Atlas (& 650) pushrods are .080" longer because they used shorter valves and changed with Commandos.

thanks

Jim
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jseng1
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Re: 650 lifters & pushrods same as 750?

Postby Mike B » Thu Feb 16, 2017 2:51 pm

Yes, 650 & 750 are the same, with both early and late pushrod and valve lengths. If he sticks with later/longer valves, should be no problem.
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Re: 650 lifters & pushrods same as 750?

Postby jseng1 » Sun Feb 19, 2017 10:32 am

Mike B wrote:Yes, 650 & 750 are the same, with both early and late pushrod and valve lengths. If he sticks with later/longer valves, should be no problem.
Mike B.


What length are the earlier valves & pushrods?
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Re: 650 lifters & pushrods same as 750?

Postby Mike B » Mon Feb 20, 2017 8:23 am

jseng1 wrote:
Mike B wrote:Yes, 650 & 750 are the same, with both early and late pushrod and valve lengths. If he sticks with later/longer valves, should be no problem.
Mike B.


What length are the earlier valves & pushrods?


Earlier, before serial # 125871, the pushrods were 8.25" intake, 7.4" exhaust, valves were 3.933 for inlet, and 3.917 for exhaust.

Mike B

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