Post by 69hcode on Jan 6, 2017 5:43:02 GMT
I came across a 12A185 small bore head. It's from a Sprite or 997 cooper. I don't think there was a difference between the two. It has larger valves than my CAM4180 and looks like it has hardened exhaust seats installed. The ports feel much smoother as well. Not sure if any work was done or just a better casting. I'm cleaning it up and going to lap the valves and throw it on. Hopefully I can pick up a little power. Until I can build the 1275 in my shop that is!