I just found a tial blue spring from a 35mm wastegate. Is it a .65 spring or what?

 

Here you go:

tial color chart

color and size pressure for 35mm/40mm/46mm (psi)
small yellow 4.35/3.63/2.90
small red 6.53/5.80/4.35
small green 9.43/7.25/5.80
small blue 11.60/8.70/7.25

large yellow 13.78/10.15/8.70
large red 15.95/11.60/10.15
large green 19.58/21.75/11.60
large blue 21.75/14.50/13.05

 

great info!!

 

here's another one... more info.

http://www.roadraceengineering.com/tial.htm