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Got out on the water today and it looks like I picked the correct pitch. The limit for this Mercury 115 @ WOT is 4800-5200 rpms. I peaked @ 5100 rpms going 36 mph (phone GPS and speedometer are within 1 mph) with three souls onboard, a full cooler and a portapotty(don't ask). Low speed...

Thanks for the responses. I ended up going with a 4 blade 17p. I'll be installing later today and in the water tomorrow. Hopefully, I'll be with in RPM limits @ WOT with the 17p.

Okay. I've researched it down to the solas titan 4. (SS 4 blade prop) Only remaining question: What pitch? Options are 13, 15, 17, 19, 21 I'm thinking 13 and 15 will be weak, or use higher rpms, getting up on plane. Can anyone recommend 17, 19 or 21? I want easy planing and best fuel...

Yeah, I did that before my post. The engine year only goes back to 2000. I have a 97'. And even if I choose 2000, there are several sizes and pitches for the 4 blade options in SS and aluminum. Any other advice? Thanks in advance.

Just got a 1996 175 w/ 115 2 stroke. Engine runs out real nice. But 2 blades are bent and one slightly cracked. I want to go to a 4 blade prop. I'm looking for fuel efficiency and easy cruising and good control idling around. Hole shot performance isn't a concern. I understand the 4 blade...