FIX ILEAN (she leans too much)

[WVZR-1]

I believe if I thought I had a "lean" I'd use the chassis trim dimensions in FSM section 3 as a guide and do my measurements based on those reference points. I'd do it this way if I felt I had a "straight & level" floor. The dimensions for J & K depending on year are going to be 180mm + to 190mm +. I'd cut a gage using maybe 2" PVC conduit 175mm long and then measure from the rocker to the gage and add that for a dimension. I believe it easier to measure from the rocker to the gage vs. trying to measure to the floor. You could use a metric ruler maybe 150mm long. If you measure 9mm to the gage then you would have a 184mm dimension.

To do Z and D in the FSM I believe I'd start with a 40mm gage and measure again to the gage. For Z & D I'd use the front control arm bolt and in the rear the camber bolt centers.

Use the FSM dimensions only as a guide, make sure the tire pressures are equal and if you wanted to get real testy put a live body or weight in the drivers seat.

I have never measured a C4 this way but I've done others in this fashion. Don't be concerned with matching the FSM dimensions, your just trying to establish the status of the chassis.

With so many different wheel/tire combinations dimensions will vary widely but you would like equal/similar side to side relationship at all points.

If these dimensions are far from equal/similar then you've got potential issues and maybe it would be wise to hang some gages to confirm some dimensions in the FSM using section 10-3.

If you've a really lowered car adjust the height of the PVC gages.

Originally Posted by BigIke

Anyone know how long the stock bolts are? If the 10" will work I'll go back tomorrow and buy it.

Rear spring bolts are 192.5mm long on '90 MY cars and for '91+ cars I believe they're 225mm long. I'm quite sure that's an "under head dimension". The bolts are M14 X 2.0. Factory bolts should have likely 30mm of thread.

"BATCHMAN" (Jeff) is correct when mentioning that tampering with right rear should affect left front, left rear would affect right front.