exhaust valve springs

[metallicat]

Looked around but only found talk of exhaust valve springs for high alt. I'm running low elevation on my 2010 D8155. North Dakota. I had mine apart the other day for cleaning and it looked like orange to me.
A. What is the orange as far as spring pressure?
B. Most importantly, What would you intelligent minds out there suggest for me? and where am i going to notice the difference.

Thanks in advance!

 

[jakesline1]

 

[metallicat]

anyone else???

 

[thefullmonte]

Polaris has quite a few options, but since I can't unlock the file to post it I will just give you the popular ones. Springs are measured by Load/lbs @ 1" and Load/lbs @ .630". All the part #'s begin with 7041704-
-1 Blue 4/ 6
-2 Orange 5.5/ 8.3
-3 Pink 4.7/ 7.1
-4 Purple 3.1/ 4.7
-5 Yellow 2.4/ 3.6
-6 White 1.6/ 2.8
Polaris is showing the orange spring as what they are using on the flat land 800's. I think I would stick with that. I know for higher alt most people prefer the pink or yellow.
Hope that helps.

 

[metallicat]

Thanks Monte!!!!!!

 

[MORSNO]

I've been using orange springs in my 700 for the past 5 seasons riding from 0-4000' normally. I noticed that the orange blended in with the rust on the mag side until I plugged the plenum drain hole directly about the valve.