31-08-2023, 08:33 AM
Nick,
Basic rule of thumb is 9E is non-supercharged Ulster, 9C for supercharged.
Good to see another of these patent numbered 9E1 heads, similar to to one I was discussing in an earlier post
Basic rule of thumb is 9E is non-supercharged Ulster, 9C for supercharged.
Good to see another of these patent numbered 9E1 heads, similar to to one I was discussing in an earlier post