So, I was able to play with the adjustments a little bit. Not sure if my tach is working, its new and set properly. With a 22 Raker at 3" P to P I can only turn 5000 at 54 mph gps. With a 23 solas 3" P to P I can only turn 4800 at 57 gps. This is fully loaded with 2 passengers weighing 460 lbs total. Anything higher P to P I can feel the props slipping and lose speed, hole shots are great, no issues there, but I cant spin this engine up past 5000 and only 4800 with a 23P?? It runs and sounds great. Water pressure is 4lbs at idle,2600 rpms 10 lbs, WOT is about 16 lbs. Any ideas?
This is on a 1996 Stratos 278.
Its a 1990 Johnson 175 GT
Model VJ175SLESE
Thanks
Eric