I have a 1999 Tige V-drive boat and last outing, after coming off of a plane, the motor developed a loud lifter tick. At minimum, the lifters will need to be replaced and I am guessing the cam should be replaced as well, which would require having to pull the motor out. Since the motor will most likely come out of the boat and due to the hours and years on it. I am debating rebuilding the motor
My question is, is rebuilding the motor overkill and should I just replace the lifters and not touch the cam shaft? If a rebuild should be performed, is it generally better to buy a rebuilt versus doing the rebuild yourself? If I do the rebuild myself, is it worthwhile to have the cylinders bored out and make it a 383?
Additional details:
Model: MIE 350 MAG MPI SKI
Year: 1999
Hours: 900+
Other minor issues that have not caused major issues yet but indicate a rebuild may be needed:
-Excessive blowby one or cylinders. When the oil cap is off, there appears to be an excessive amount of smoke/exhaust exiting out of the filler. I have not performed a compression test yet.
-Oil loss under heavy load. When surfing or pulling tubers, there is always oil on top of the engine, I have cleaned the engine and have been unable to locate the source, but it never loses a drop of oil when just cruising. I am thinking the issue may be related to high crank case pressure due to the aforementioned blowby combined with the angle of the motor when doing water sports.
-When getting up to plane speed, there is a spot on the throttle where the rpms follow the throttle as they should, then the rpms will drop off, when continuing to increase the throttle, the rpms will then start to go back up with the throttle. When backing off the throttle, the rpms follow the throttle, where around the same spot they drop when increasing, they will do the inverse and will jump up high and then will follow the throttle again. To clarify, there is no issue at low speed/rpm when doing water sports, it is only at the higher rpms when at plane speeds.
My question is, is rebuilding the motor overkill and should I just replace the lifters and not touch the cam shaft? If a rebuild should be performed, is it generally better to buy a rebuilt versus doing the rebuild yourself? If I do the rebuild myself, is it worthwhile to have the cylinders bored out and make it a 383?
Additional details:
Model: MIE 350 MAG MPI SKI
Year: 1999
Hours: 900+
Other minor issues that have not caused major issues yet but indicate a rebuild may be needed:
-Excessive blowby one or cylinders. When the oil cap is off, there appears to be an excessive amount of smoke/exhaust exiting out of the filler. I have not performed a compression test yet.
-Oil loss under heavy load. When surfing or pulling tubers, there is always oil on top of the engine, I have cleaned the engine and have been unable to locate the source, but it never loses a drop of oil when just cruising. I am thinking the issue may be related to high crank case pressure due to the aforementioned blowby combined with the angle of the motor when doing water sports.
-When getting up to plane speed, there is a spot on the throttle where the rpms follow the throttle as they should, then the rpms will drop off, when continuing to increase the throttle, the rpms will then start to go back up with the throttle. When backing off the throttle, the rpms follow the throttle, where around the same spot they drop when increasing, they will do the inverse and will jump up high and then will follow the throttle again. To clarify, there is no issue at low speed/rpm when doing water sports, it is only at the higher rpms when at plane speeds.
