1986 CR250 Spring Rate

[nomadtrash]

This is kind of an oddball.

I'm using the rear shocks and springs from a 1986 CR250 on an E-Modified autoctoss car. The shocks are the stock Showa. They are not working through a linkage of any sort. I am trying to get information about the actual spring rate for the stock springs. I think they are way too stiff and will need much lighter springs. I also think I need to change the oil thickness for lighter springs. Can you give me the actual spring rate and when I figure out what my ideal spring rate should be then give me suggestions on the appropriate oil thickness?

Thanks,

NT

68 Datsun Roadster
KA24DE Supercharged
1450 pounds curb weight
Check it out at
world wide web thumb5.webshots.net/t/51/151/0/23/92/480002392MblaKW_th.jpg

 

[Pete Payne]

The stock spring rates were .36kg/mm in the forks and 4.7 kg/mm for the shock .