Re: 40hp Lark powerhead to 18hp fast twin leg
Gid you inspect / replace the tapered roller bearing in front of the forward coil ?-----How did you determine that the noise is coming from the lower unit ?
Racer
Not sure if my last post went,
The bottom end sounds as though the pinion is engaging too deeply!
With the heavier / correct oil it's much quieter, but still not silent.
Maybe I'm worrying unnecessarily and the noise may be normal for this style and age of motor,
I would like to try an additive but I am concerned about increasing the viscosity and ruining the Electroshift mechanism,
I may just continue to run it until it dies but would rather see if an additive will make it quieter.
The reason for wanting to know what bottom end will suit is that if it does die I would simply swap my power head onto a mechanical shift bottom end.
The mechanics at the dealership has no interest in assisting as he has no knowledge of these old motors and if it ain't new it's not cool.
The current motor is the original on my boat and I would rather persevere with what I have instead of upgrading to a modern engine.
Gus