Crossflow & Roller Rockers

Crossflow & Roller Rockers

Author
Discussion

Moto

Original Poster:

1,261 posts

260 months

Thursday 11th May 2023
quotequote all
Anyone have any experience of running roller rockers in a Crossflow?

If so I'm interested in whether it's a sensible way to raise cam lift without changing the cam. I've found a forum thread from Roger King saying it works well with old school low lift, long duration cams such as the A2.

Moto

NicBowman

785 posts

245 months

Thursday 11th May 2023
quotequote all
Hi Moto

I have seen them with the same lift ratio, so no benefit that way. I assume you can get higher ratio. I am tempted to fit them on my rebuild, mainly as they seem quite reasonable and will cut side loads and wear.

Are your pistons pocketed for a higher lift? That may be your issue.


NicBowman

785 posts

245 months

Thursday 11th May 2023
quotequote all
Ditto valve guide clearance and spring compression. Needs careful checking.