Quote:
Originally Posted by Brad Roberts
Raising the steering rack in the front to correct bump = we've been doing this for years in 914's and 911's. Porsche Motorsports does this on ALL the RSR's  and I do it on Cayman's and Boxster's |
This statement has been bothering me a bit. So, yesterday I checked my front bump steer. My set-up has aftermarket tie-rods, so I can shim the rod end at the upright rather than shimming the steering rack, but it's all the same.
My toe change was less than 0.1 degrees throughout the whole travel range with no shim adjustment. I haven't compared the tie-rods I am using to the OEM tie-rod dimensions, so it could be some difference there. The only other thing I can think of is that I am using a lot less caster than stock, so perhaps the caster change also has an effect.
I guess the moral is there is no short-cut to testing your exact configuration.