So, correct me if I'm wrong, but when a riser is listed as a 3" or 4" or whatever, it refers to the outlet size, right? Or is it how high the bend is?
I've been looking for manifolds for my center riser conversion and some of them have really short risers and some have really tall ones. I need the shortest possible risers so my cowl will still close. I'm not worried about water since my current logs only have about a 3" tall riser on them; any center riser is bound to be taller than that.
How do I get short risers? Will 4" outlets be a benefit at 325 hp or should I stick to 3"?