mgg wrote:


I'm not sure that's entirely accurate from my own experience. I had a
aluminum 19 on my 190hp Merc and it ran WOT at about 5400RPM (when I bought
the boat). The manual states 4400-4800rpm for WOT.

I read and heard that the adjustment was (rule of thumb) 1" pitch/200 rpms.
So I increased the pitch to 23 with a SS prop, and I'll be damned if WOT is
at about 4600rpm now...perfect. Maybe it would have been different if I
stayed with aluminum, I don't know. YMMV

--Mike

That's a pretty fast 190 hp. 55 mph?

What hull is that Merc in?

Rob