Valve Rocker arm

[DrGadget]

I want to install new roller rocker arm but I want to understand what 1.2 1.3 ratio is.what does this do?Can someone explain this to me please.I don't want to order something thats not right for my motor.Thanks

 

[Newoldstock]

I want to install new roller rocker arm but I want to understand what 1.2 1.3 ratio is.what does this do?Can someone explain this to me please.I don't want to order something thats not right for my motor.Thanks

It gives the valve a little more lift with a stock or low lift cam.

Been a long time since we heard from you Doc.
What you up too?

 

[rmm727]

Yep. 1.2:1 multiplies lift by 1.2
1.3:1 multiplies lift by 1.3

 

[DrGadget]

It gives the valve a little more lift with a stock or low lift cam.

Been a long time since we heard from you Doc.
What you up too?

I'm a trucker up here in canada and I'm trying to get this bike done to bring with me on the road.I have a sweet spot on my truck and I drive a crane,so getting it on and off the truck is not an issue.I stopped build for awhil but I'm back and am going to finish this beast!I'm hoping to finish by may-june.

Thanks for the info,I did do more research and decided togo with the 1.3:1
Nitrious just needs to be hooked up the end.Slow but going to be worth the wait.