If both engines made 200 peak horsepower on a dyno the “overall “ performance on his boat would be similar. The 6500 rpm motor would have more torque thru the lower rpm range allowing for a higher pitched prop. The engine making 200hp at 10,500 rpms would have less torque in the lower rpms...
Your 225 pro super magnum with a 15 inch mid is an awesome package on your boat. I am confident if you spent the money for an apx (Even if it was available with a sport master) you would be sorely disappointed in the performance department compared to what you have now for money spent.
I think you would find If you could get a proper lower unit ,it would perform similar to a 1996 mercury 200 or any other year for that matter. I have found from first hand experience 200 horsepower is 200 horsepower. 150 horsepower is 150 horsepower, Etc. In spite of what mercury or any one else...
I went through the same thing years ago and the replacement that I purchased from Allison was a way better piece than the original equipment .it’s built much more heavy duty ,tighter tolerance ,way better piece than what came when new. The one I got didn’t look anything like the one pictured...
Ls3 appears to be the ones that are installed in my boat.20+ years worked like a champ. My boat is in storage now so can’t send a video ..looks like this plus stainless countersunk screws, countersink washers . Nylock nuts should do the job from failing memory
This would be under the assumption your power head is sitting on top of a “factory’ pro max adapter. If someone put your power head on top of a one piece 260-280 adapter there will be no poppet valve. I purchased a new pro max in 1998 and it had a 2 piece with solid mounts new. I have heard of...
If it were mine the first order of business would be getting the motor to run at proper operating temperature. Returning the cooling system to factory would likely do that . Probably need a 225 2 piece adapter With Solid mounts, poppet, correct thermostats, hose routing, etc. . The dying could...