Here's an update to my last post. I ran the 17p Solas SS and I could only turn @5800 but I still ran 32mph. I changed to the 15p Solas ss and got my rpm's back to 6000 but I think I topped out @ 30mph. The way that I use my boat I prefer the higher rpms over the speed. I'm sticking with the 15p for my use. I did notice prop chatter at the low speeds that I didn't have with the aluminum.
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1975 V-20 w/1996 225 Johnson
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