914 ride height?/raising rear/trailing arm ideas? Options

[slugmika]

I'am going to raise my rear suspension pick up points and would like to know what should be the ride height?
I found that front shoud be 108mm from torsion bar center to spindle center.
What is Porsches recomendation?
I know that some of you have raised pick up points, have you used the factorys specs or what.
How much have you raised those?

And finally, is there any poin to make the stock kind of trailing arms? I have allready made a jig with stock trailing arm dimensions. Those would use stock bearing hub but otherwise made of tube. We would use uniball's rather than stock kind of bushings.

Car is now on a table and it would be easy to make allmost anything, so if you have good ideas feel free to share

Thanks
Mika

[slugmika]

Warning... I'm opinionated on this subject....
-Ok i'am warned (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) I'we noticed that you seem to have one fast 914 so i'am listening.

Check your toe and camber change with each starting angle on your trailing arm. It will make it very obvious what the real solution is.
-It seems that now when my car is lowered to desired height, i can't have any toe in in rear. Trailing arm's might have bended but i'am not sure. Because i'am not an engineer, i was wondering that maybe it would be wise to keep the original geomethry in there? Only raise the pick up point's?

IMO a trailing arm is not better than a 12.5 degree semi-trailing arm... you want some camber gain with roll/jounce.

I can tell you what I think, but it's better if you know and understand the dynamics for yourself...... hint... toe out in jounce is not a good thing.
-My main idea to raise the rear is to correct the extreme trailing arm angle. I have severe traction problems in rear and that trailing arm angle and toe out must be main issues?

Thanks

Mika