Hi,

Is there any difference in rocker ratio's between the XR motors over the Non-XR's?

I know the head and cam is different but am not quite sure about the rocker's.

Cheers

AFAIK no there is no difference between them, non-XR and XR models share the same rocker ratio which is 2:1 from memory. Unless you have an EL hybrid which has the same rocker ratio which AU's have (1.8:1) as its basically an AU top end on a EL block..

Hope that helps

What KWIKXR said.

BenJ