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carver 320 1992 speed poor
Posted: March 27th, 2022, 3:22 am
by Robert
Hi all I have carver 320 1992 with two Volvo Penta tamd31 I get full revs under load 3900 rpm
gearbox ratio is 1.93 prop size 18x15 can only get 10 nots no vibrations everything runs sweet
top speed not good
Re: carver 320 1992 speed poor
Posted: March 27th, 2022, 7:37 am
by Rocketman
Bottom Paint.
Your hull is fouled to the point that it is causing too much drag.
My first indication is always that my speed/fuel economy starts dropping.
Re: carver 320 1992 speed poor
Posted: March 27th, 2022, 4:26 pm
by bud37
Robert wrote:Source of the post Hi all I have carver 320 1992 with two Volvo Penta tamd31 I get full revs under load 3900 rpm
gearbox ratio is 1.93 prop size 18x15 can only get 10 nots no vibrations everything runs sweet
top speed not good
Welcome to the forum.....is this boat new to you or is this just a recent thing getting worse ?
Re: carver 320 1992 speed poor
Posted: March 27th, 2022, 9:20 pm
by buster53
Rocketman wrote:Source of the post Bottom Paint.
Your hull is fouled to the point that it is causing too much drag.
My first indication is always that my speed/fuel economy starts dropping.
I agree that a fouled bottom is most likely, but if the running gear was fouled, no way the engines would hit full operating RPM’s.
Yes, we need more info.