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Hard to say i would assume bottom end is the same but do recall the older ones have a max of like 4200 rpm. What year and what engine do you have? Im assuming you have a 3.0 L rated at 115 hp vs the LX rated at 135 hp? Are you trying lower pitch props for holeshot and water sports use?I think my question was more like, If same block and rotating assembly are same, is it safe to run a standard 3.0 at 4800 rpm? I'm evaluating several props right now.
I think my question was more like, If same block and rotating assembly are same, is it safe to run a standard 3.0 at 4800 rpm? I'm evaluating several props right now.
....keeping in mind that the 4800 RPM figure, like the 4200 RPM figure is not intended as a continuous operating RPM..
I had a similar size '91 sea ray 170 ( i think 17'6") with a 3.0, what I arrived at was two props Both Aluminum michigan vortex 4 blades- I used a 18" for cruising/tubing, and a 16" for skiing. At the time I was clocking in at about 265-270 lbs and it would pull me up fairly good on two skiis. The 18" did womnders for sternlift and lower planing speed at the expense of 3 or 4 mph top end which you never get to use due to waves anyways... Lower planing speed was nice because the 3.0s are always a little loud so the PM booze cruise was more pleasant for the wife...Correct, we just bought a 18' Sea Ray bowrider, 1995. Not my 1st boat, and so far, a solid 40+ mph, very pleased. Just trying to ID this engine and dial in a rpm range. I understand the limits of this motor and don't feel handicapped, nor am I looking for the ultimate top speed. This was with a 21p, which I just had reconditioned and will be testing today with shop tach. Thank you for your help,
Will report on it later.