Motor Mount Offset

[knuckleheadtim]

I've measured several Knuckle and BT Flathead cases to try to determine the vertical offset from the front to rear mounts, and no two cases are even close. Even brand new aftermarket cases aren't machined on parallel planes. I have a Panhead frame blueprint that shows them parallel and offset 2", so theoretically the distance would be 2" minus the thickness of the '48 spacer used under the front mount on the flathead.

Does anyone have a Knuckle frame or motor blueprint that would give that spec? Thanks in advance.

Tim

[Steve Little]

Hi Tim.
Pan is 2"
Knuckle is 1 5/8"

Regards Steve