Got a customer going to give ma a captians call system for my boat but he says I need to measure the risers. .. problem is the boat is 4hrs away in storage. This is a 97 carbed 454/300HP with the standard Merc, manifolds on it going to the exhaust U pipe for through hub exhaust.
How high are the risers?
What diameter is the pipe?
Thanks for the help.
Chris