Hi
So the merc 150 black max I have on the wee cvx16 is a strong motor. Runs so well on the couple of outings so far. She ran a 66 mph gps on the second try and prop that day.
Initially I presumed her red and white decals (look very original) of the usual found on a late 80’s to early 90’s model like this were just original and that’s that. But after doing the impeller on her and knowing what she’s like under the hood. She’s a little older looking in style under the hood and most obviously, the lower unit gearbox is certainly a different arrangement from a late 80’s engine I had years ago. The bolt configuration that hold the gearbox on is different altogether. Not long after, a local guy that knew the engine when she was on her original boat (I bought both for the engine, just to put the engine onto the cvx, I then sold the boat it came on cheap), is certain the engine used to have the older brown decals from the early 80’s. He might be correct.
So the question is, would I be right in thinking the older type gearbox is of a higher ratio than the newer version. Details to be found are limited that I can see. I know the more common ratio on late 80’s and 90’s models is around 2-1 or close…but I have in mind the older gearbox like mine, may be around 1.8ish. Would certainly make sense with how she runs, given the speed and rpms she’s pulling now. Despite that and either way, she’s still needing at least a 25” to keep her under 6000 rpm, I’m sure.
Anyone any idea ? Can’t check the serial for a good while. She’s tucked away on an island for winter.
So the merc 150 black max I have on the wee cvx16 is a strong motor. Runs so well on the couple of outings so far. She ran a 66 mph gps on the second try and prop that day.
Initially I presumed her red and white decals (look very original) of the usual found on a late 80’s to early 90’s model like this were just original and that’s that. But after doing the impeller on her and knowing what she’s like under the hood. She’s a little older looking in style under the hood and most obviously, the lower unit gearbox is certainly a different arrangement from a late 80’s engine I had years ago. The bolt configuration that hold the gearbox on is different altogether. Not long after, a local guy that knew the engine when she was on her original boat (I bought both for the engine, just to put the engine onto the cvx, I then sold the boat it came on cheap), is certain the engine used to have the older brown decals from the early 80’s. He might be correct.
So the question is, would I be right in thinking the older type gearbox is of a higher ratio than the newer version. Details to be found are limited that I can see. I know the more common ratio on late 80’s and 90’s models is around 2-1 or close…but I have in mind the older gearbox like mine, may be around 1.8ish. Would certainly make sense with how she runs, given the speed and rpms she’s pulling now. Despite that and either way, she’s still needing at least a 25” to keep her under 6000 rpm, I’m sure.
Anyone any idea ? Can’t check the serial for a good while. She’s tucked away on an island for winter.
