posted September 25, 2000 10:10 AM
I am racing a GM Metric street stock on a very flat ľ mile dirt oval that is usually a very rough surface. Iím having a problem getting into the corner that I canít seem to solve. What happens is as I set the car in the corner, the back end starts to come around like it should, but if I carry as much speed as I need to the whole car (mainly the back) skates. Itís like a neutral skid, slightly on the loose side.
Itís got me stumped. I have scales and an alignment gage, and I know Iím in the ballpark. I have 49% rear, 53% left, and 50.5% cross with 3250 total weight. While I would like a higher rear percentage, Iíll need to put the front on the diet to get it done. The front end is set at LF 2.5 deg. pos camber and 2.5 positive caster, RF 4 deg neg camber and 4 positive caster. My springs are RF 1200, LF 1000, RR 250, LR 300.
The only thing that comes to my mind is either bad rear shocks or bottoming out. A trustworthy chassis guy at the track this past week asked me about the ride heights. Truthfully, Iíve never paid attention to them. Turns out they are RF 7-1/8Ē, LF 6-1/4Ē, RR 8Ē, LR 7Ē (measured at the main frame rail). He thought I was too low on the left and needed to get the car level. I checked my Steve Smith SS Chassis book, and he has all of two paragraphs on the subject.
Thus far, all Iíve paid attention to with ride heights is to make sure that the lower ball joints were at or below the inner pivot points of the a-frame. Then, at the rear that the lower control arms were about level (they are actually sloped down towards the front by about ĺĒ).
Got any ideas????
[This message has been edited by 24ksi Racing (edited September 25, 2000).]