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techtalk:evo:engmech04 [2025/10/01 04:35]
– [Sub Documents] hippysmack |
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techtalk:evo:engmech04 [2025/10/01 04:49] (current)
– [Pushrods] hippysmack |
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| ====== Pushrods ====== |
Pushrod lean angle on 91-up engines. |
The lifters are square to the lifter bore but they're not quite square to the rocker arm slot for the pushrod. \\ |
There is a slight lean angle between the lifters and the rocker arms as shown below. \\ |
The pushrod tubes line up square with the lifter blocks and hide the lean angle of the pushrods. \\ |
In the pics below, a inside bore gauge is lined up app. straight from the lifter bore to the rocker arm slot for the pushrod. \\ |
This is the app. lean angle of the pushrods between the lifter and the rocker arm. \\ |
The pushrod angle also changes as the rocker arm moves thru it's arc while the valve is opened and closed. ((Tomcatt of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/efi-sportster-motorcycle-talk-2007-and-up/198138-lifters/page3?t=2074861&page=3)) \\ |
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{{:techtalk:evo:engmech:pushrod_lean_angle_1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:evo:engmech:pushrod_lean_angle_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ |
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