ron adams Posted July 10, 2006 Share Posted July 10, 2006 I read about having to limit the travel of the rear end when racing a Z on the strip. How do you go about this? Quote Link to comment Share on other sites More sharing options...
spork Posted July 10, 2006 Share Posted July 10, 2006 Are you trying to limit the amount of "squat"? Some weight transfer is a good thing, but putting the bumper in the dirt isn't. I set up an air bag system on my 280zxt. I took to sleeper bags from a Peterbilt sleeper made some upper mounts and hooked hem to the lower control arms. Works great! I haven't looked at my 240z to see if it would work the same on it as well. Quote Link to comment Share on other sites More sharing options...
ron adams Posted July 10, 2006 Author Share Posted July 10, 2006 Yes limiting the amount of squat was the idea. I am concerned with traction. I understand solid rear suspensions and traction. But how do you get traction with IRS? Quote Link to comment Share on other sites More sharing options...
jnjdragracing Posted July 10, 2006 Share Posted July 10, 2006 We limited our front end travel to keep it from going to high, and also limited the rear end travel squat. To the rearend squat we used spacers and placed on top of the struts. When the front end travel comes up so high you loose time / when the car begins to leave. By limiting the rear squat is the same but also you want to adjust it so when under load / takeoff you want the halfshafts to be parrallel you know straight in line, this keeps the ujoints / cv's out of a bind. We never had a problem of hooking, always hooked good. But we had to limit the travel ( to keep from losing time ) and the rear to keep from breaking ujoints. Go to my web page www.jnjdragracing.com and look at some of the videos of us leaving. John Quote Link to comment Share on other sites More sharing options...
jbc3 Posted July 10, 2006 Share Posted July 10, 2006 I had a terrible squat problem on launches and after talking to jnjdragracing's brother, I installed double bump stops on the rear coilovers. I actually use one hard one and one soft one on each side. Works great, cured the squat problems and I have no traction problems on launches. Check the video out in my sig. Jody Quote Link to comment Share on other sites More sharing options...
ron adams Posted July 10, 2006 Author Share Posted July 10, 2006 We limited our front end travel to keep it from going to high' date=' and also limited the rear end travel squat. To the rearend squat we used spacers and placed on top of the struts. When the front end travel comes up so high you loose time / when the car begins to leave. By limiting the rear squat is the same but also you want to adjust it so when under load / takeoff you want the halfshafts to be parrallel you know straight in line, this keeps the ujoints / cv's out of a bind. We never had a problem of hooking, always hooked good. But we had to limit the travel ( to keep from losing time ) and the rear to keep from breaking ujoints. Go to my web page www.jnjdragracing.com and look at some of the videos of us leaving. John Thanks so much for that response! Your car is AMAZING. I would never have imagined that kind of lift was possible with a Z. Wow. I can hard;y wait to get mine going. Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 14, 2006 Share Posted July 14, 2006 How did you limit the front end travel? Spring clamps? Quote Link to comment Share on other sites More sharing options...
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