Spring constants for 2tg valve springs

[Noof]

Hi,
Does anyone happen to know the spring constants for the 2tg valve springs.
Interested in both the singles from the 222 and the pairs from the 261 heads.
Should be in N/m?
Thanks
Nathan

[Noof]

No one?
Surely someone has this info?
Nathan

[71TA22]

Hi Nathan,

Double springs:

Inner - force is 7.3kg at installed length of 36.5mm or 200kg/m
Outer - force is 23.7kg at installed length of 39.0mm or 600kg/m

Single spring - force is 35.0kg at installed length of 39.0mm or 900kg/m

[Noof]

Thanks Mike,
Will see if I can work anything interesting out from there.
Cheers
Nathan