Had a long weekend on the boat. Only put about 1/4 tank of fuel through it, but had two very unusual load cases.
Saturday was Party Day. Had 6 adults and 5 coolers headed for the local party spot. ZERO cavitation on launch, but would have preferred to let the motor "spin up" a little bit to get into some more power as we were heading out. Was somewhat slow to plane with such a heavy load. Still easily out performed my last boat, and I'm not upset in the least as I had an easy 1,600lbs of people and cargo aboard. But it was noticeably "sluggish" to rev to redline on launch. Hung around 7,000 or so until on plane, then slowly climbed to 7,4o0. Had a top speed of only 38mph, but had 3 ladies in the bow that made the slower speed acceptable, as the view was excellent. Once on plane I was able to adjust speed as needed for conditions and traffic, as well as make a few "fun" turns. The ribbon delete really added a considerable punch in the mid range, and the L13 seems to have helped control the cavitation that was there even before the ribbon delete.
Had a chance to really play with the boat for only the second time this season. Ran 1/2 the lake (7 miles or so) at WOT. Reasonably smooth water, and a nice cool morning on Sunday. Days like this don't come often for me with a 7yr old and 4mo old. Top speed was a nice 43mph, but still only about 7,450 consistent rpm. Boat was stable and smooth, and seemed to give no craps about "extended" WOT abuse.
Felt no sign of cavitation all weekend long. Even did some watersports on Sunday morning/afternoon and it easily yanked my 230lbs out of the water without hassle. Definitely need to get RideSteady though. Had a hard time maintaining speed for some reason. I suspect the wife was tired from Saturday and was a little more chatty than normal with other ladies on the boat.
Anywho, I noticed that I'm not getting "peak" rpm anymore. With the L13 installed (with all spacers in place), and a ribbon delete I was only getting about 7400rpm (as indicated on digital readout on tach). I stuck my head under the boat when we got home yesterday, and it still looks excellent. No signs of pitting, no nicks, and I couldn't get a credit card between the impeller and wear ring. My gut tells me that is in good shape. The sealing I did with the Loctite brand adhesive sealant is still holding as well, which I was a little surprised at honestly. Shouldn't I be up closer to 7800 rpm? If I should have more revs, whats the best way to start adjusting? Take a shim out or start boring the nozzle? I'm not into refurbishing/repitching an impeller am I?
@swatski any thoughts?