Originally Posted by C-NUMB
Can't swear my engine is totally in center(need to check) but have a vague memory that previous owner moved the engine from offset to centre of transom, so not so sure that is the issue, as it works fine on this boat.
At least I would not start with moving the engine sideways at this stage. But would try another propeller and also playing with weights also sideways. My console is offset to starboard.
I just measured for checking. Engine in my boat is in center of transom, spot on.
Here a video of mine set-up
Skip it until 7:09 , there it is doing about 39.5 knots. Boat has Teleflex steering having some play as usual. Boat was little stern heavily loaded this time.
I am convinced that one can get a SR to handle OK with a 175 kg lump. If knowing the location of LCG with the 90 Yam, then moving the battery, tank and maybe console to obtain the same LCG with the heavier engine, handling should not be that much different? Total weight (affecting performance) will be higher though. Another option is to move a 20 kg led weight, guess putting that in the bow would already pretty much keep the LCG in same position.
I love the Yam 90, but it is little noisy....wonder how is it compared to the sound of a 90 optimax?