Coil spring dimensions.

Area Discussion Yorkshire Ridings
2

I am having to replace a broken Front Coil Spring on my 1991 V spec Eunos.

I am told that the ‘Off the shelf’ MX5 coild springs have different dimensions especially the spring hieght ( The V spec is supposed to have Lowered suspension set up ! )

Can  anybody tell me the UNcompressed spring hieght please ?

Wouldn’t like to order the wrong coil springs !

Cheers,

TFYG Brian.

1991 Eunos V spec 1.6 Auto.

3

The Vspec uses standard suspension. However, from the factory, as for all Roadsters, there were two different optional suspension packages; Bilstein (yellow shocks) or KYB (orange shocks, orange springs, orange  ARBs, quite rare), or someone might have just fitted lowering springs.

These are Miata factory spring specs; they should be the same as equivalent Japan models. MT is manual, AT is auto. Note the differences in automatic cars.

 

year   color code wire dia coil inner dia free length number of coils spring rate  
      (inch) (inch) (inch) (n) (lbf/in)  
                 
1990 front red 0.43 3.27 11.12 5.91 164.17 *
  rear blue 0.40 3.27 13.37 7.68 96.94 *
                 
1991 MT front red 0.43 3.27 11.12 5.91 164.17 0.00
  rear blue 0.40 3.27 13.37 7.68 96.94 0.00
                 
1991 AT front white 0.43 3.27 11.52 6.32 153.52 0.37
  rear orange 0.40 3.27 13.68 7.96 93.53 0.30
                 
1992 MT front red 0.43 3.27 11.12 5.91 164.17 0.00
  rear blue 0.40 3.27 13.37 7.68 96.94 0.00
                 
1992 AT front white 0.43 3.27 11.52 6.32 153.52 0.37
  rear orange 0.40 3.27 13.68 7.96 93.53 0.30
                 
1993 MT front red 0.43 3.27 11.12 5.91 164.17 0.00
  rear yellow 0.40 3.27 13.72 7.68 96.94 0.00
                 
1993 AT front white 0.43 3.27 11.52 6.32 153.52 0.37
  rear green 0.40 3.27 14.04 7.96 93.53 0.65
                 
1994 MT front white 0.43 3.27 11.52 6.32 153.52 0.37
  rear yellow 0.40 3.27 13.72 7.68 96.94 0.35
                 
1994 AT front blue2 0.43 3.27 11.89 6.32 153.52 0.72
  rear green 0.40 3.27 14.04 7.96 93.53 0.65