1985 Perkins Range 4 motor
I don't want to hijack the other Perkins thread, but did have a question or so about the Perkins Range 4 motors (200 HP).
Instead of dealing with the dreaded manicooler (when it fails) would it be possible to simply remove the turbo and install a standard Perkins exhaust and make it a normally aspirated system?
I have no knowledge of the difference in compression or camshaft specs between the 2 motors, but this would seem to be the real issue in doing this modification, other than standard Perkins exhaust parts being able to bolt on.
I don't hot rod the boat, but do let it run hard for 15 to 20 minutes each time out. Normal cruise speed is 11 knots at 1200 rpm, 15 knots max now.