Boat will be receiving a 1" extended kaplhenke front coilover set, but I had to check some important parameters first. Most notably, how much angular displacement do I have left in the ball joint, and will it bottom out at full droop with the extended strut housings?
Here's my investigation:
The ball joint has a maximum angular displacement of 35 degrees relative to the normal of the control arm plane.
With stock suspension at full droop, I measured the control arm to be 17 degrees to horizontal, and measured the ball joint to be at 25 degrees of angular displacement from the normal projection of the control arm plane.
I also measured the control arm to be roughly 12.5" from pivot point to ball joint center.
So, neglecting changes in strut angle (max 3 degrees added camber?), we can calculate the new control arm angle from a 1" increase in strut length:
sin^-1[((12.5*sin(17 deg))+1)/12.5] = 21.8 degrees.
So I can expect a maximum of 5 degrees increase (21.8-17) in control arm angle from extending the strut housing 1".
If I set a front negative camber of -3 degrees, I should still be in the clear, but barely. I doubt I'll need that much camber to compensate for the positive camber shift of raising the front 1"