MONGO510 Posted September 3, 2009 Share Posted September 3, 2009 I have been looking for hours:( and can not find any information on what is the desirable suspension travel on a caged 260Z to be used for AutoX, Hillclimbs, and Trackdays. What are you guys running? 4 in.? 6 In.?10? Any suggestions are welcomed. Thanks, Mongo Quote Link to comment Share on other sites More sharing options...
JMortensen Posted September 3, 2009 Share Posted September 3, 2009 Depends on the springrate. The stiffer the springs, the less travel you need. If you follow the (debatable) notion that the sag should be 1/3 of the travel and your car weighs a perfect 2000 lbs with 500 on each corner, you could say that a 500 in/lb spring needs 3 inches of travel total, a 250 in/lb spring needs 6, etc. Change the guideline to 1/2 and you're looking at 2 inches for the 500 in/lb spring and 4 for the 250 in/lb spring. My gut feel is that for a very very stiffly sprung car maybe 3-4 inches, a stiff car, 5-6, and anything less than say 300 in/lb per corner should try to keep all the travel they can. This coming from a guy who used to lower his coilovers all the way down and autox about 1" off the bumpstops, so take my own hypocrisy into account too. I think the factory travel is 7" at the wheel, but that's an old fuzzy memory so don't take me as gospel there without double checking. The other question is how are you going to limit the travel? Probably the only real easy way to do it is to use droop limiters and coilovers, so that you limit "excessive" or unused rebound travel. I can't think of any Z that needs the compression travel limited. They were pretty limited to start, and then you start lowering them and losing travel that way, and you end up running out really quickly. Quote Link to comment Share on other sites More sharing options...
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