greg_roberts
New member
"I am installing a new 5.7 MPI
"I am installing a new 5.7 MPI in my 26 foot Tollycraft. I currently have dual 3" exhausts with the original 270 Crusader, with about a 4' run from the manifold to the stern. The new engine comes with 4" exhaust ports. Does anyone have a recommendation about upgrading the system to a 4" or will I be ok if I stay with the 3"?"
"I am installing a new 5.7 MPI in my 26 foot Tollycraft. I currently have dual 3" exhausts with the original 270 Crusader, with about a 4' run from the manifold to the stern. The new engine comes with 4" exhaust ports. Does anyone have a recommendation about upgrading the system to a 4" or will I be ok if I stay with the 3"?"