Primary clutch springs

M

m8snowman69

Free Member

Jan 14, 2017

10

0

1

• Jan 14, 2017

• #1

I would like to change the primary clutch spring so that the it engages between 2500 & 3000 RPM's. My current spring is yellow/white, which engages around 4500 RPM's. Can someone tell me what the clutch spring options are for a 2007 M8 162" track and at what RPM they engage?

 

M

MountainCat1

Free Member

Oct 4, 2015

538

147

43

Montana

• Jan 14, 2017

• #2

Springs

Search this forum, there are some spring rates & charts posted. That being said, it seems that on the older M's, the ECU mapping & the heavier older AC clutches need a higher starting rate spring. Most springs @ a lower initial rate than the W/Y (lower engagement rpm) usually resulted in an engine bog! A reasonably tight .015 belt to sheave clearance can give a smoother, albeit high, engagement.

 

Last edited: Jan 14, 2017

M

MountainCat1

Free Member

Oct 4, 2015

538

147

43

Montana

• Jan 14, 2017

• #3

On Second Thought on Primary Springs

Talk to the experts @ Hubs Performance or Racin' Station.

 

F

F7arcticcat

Well-known member

Lifetime Membership

Nov 26, 2007

523

75

28

• Jan 14, 2017

• #4

The arctic cat gold spring has a very nice low engagement.