Thread: 2-3" lift on a Series II

From memory the lift on the military 2a is about 40mm. That much requires sculpture of the crossmember under the clutch housing, but does not seem to have any other serious problems. Any more than this would start to present serious U-joint angle problems, and the steering draglink would be getting to have an excessive angle. Worth noting that the track is narrower than coil sprung ones as well, although the military ones do not seem to suffer in stability to a noticeable degree.

I think some others here have tried large lifts, and maybe they can comment.

John

Originally Posted by JDNSW

From memory the lift on the military 2a is about 40mm. That much requires sculpture of the crossmember under the clutch housing, but does not seem to have any other serious problems. Any more than this would start to present serious U-joint angle problems, and the steering draglink would be getting to have an excessive angle. Worth noting that the track is narrower than coil sprung ones as well, although the military ones do not seem to suffer in stability to a noticeable degree.

I think some others here have tried large lifts, and maybe they can comment.

John

Hi John, thanks for this info. The way the mil have done this seems to be a good way to approach it as the mounts were dropped rather than increasing the camber on the springs. That increase in camber which I would have to do is something that I'm unsure of, and how dramatic the changes will affect the way the suspension operates. The UJ and drag link are some good points. I have scalloped out the Xmember already and it sits on wider axles also, so hopefully stability will be ok

Originally Posted by Slunnie

Hi John, thanks for this info. The way the mil have done this seems to be a good way to approach it as the mounts were dropped rather than increasing the camber on the springs. That increase in camber which I would have to do is something that I'm unsure of, and how dramatic the changes will affect the way the suspension operates. The UJ and drag link are some good points. I have scalloped out the Xmember already and it sits on wider axles also, so hopefully stability will be ok

The problem with increasing the camber of springs is that it increases the amount of both the shackle movement and axle movement for the same amount of spring deflection. In particular, it increases the amount of rotation on the bush at the shackle end of the spring, and it would be very easy to exceed the amount of rotation that any elastic bush can withstand without failure. Of course, you could always use a lubricated metal to metal bush, but there are good reasons why these disappeared from most vehicles over fifty years ago.

John