David Ashcroft
Well-Known Member
- Joined
- Jan 26, 2014
- Messages
- 1,670
Anyone have good info on the new cmb 80 hr .my first 80 size engine in a mono and like to know what CC volume works best on the head,with .12 thou clearance with 50-60%fuel,,will have stock timing to begin ,I will be using the cmb 67/80 large volume pipe,
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