290 sc
#13
Registered
What part of the country are you located? There might be a fellow Velocity owner nearby.
Padraig
#14
Registered
iTrader: (8)
The Bravo props are really 1 pitch smaller than stamped. The 28p Bravo measures 14.75" dia vs 15.25" as advertised. The larger pitch's are more true to size. That's the correct prop for his boat.
Prop/hull condition? Boat load? All play a big factor in getting top speed and rpms. As said get some gps speed numbers. What are you trimmed at?
Prop/hull condition? Boat load? All play a big factor in getting top speed and rpms. As said get some gps speed numbers. What are you trimmed at?
#15
i do have a spare propeller. its a 28 4 blade but the blades are sharper. would that make that big of a difference? hull is in great shape and usually have 4 on board with half tank of gas. was running against my old boat and a friends 272 baja both with 502s. werent pulling on my. ill look more closely at tach and speedo today. thanks again gents!!
#16
Banned
iTrader: (9)
What rpms are you running at ? if the engine will not reach 5000 rpms I would scan the engine and see if the engine is producing 100 available power and I would check fuel pressure before spending money on new props.. 496 suffer from many sensor issue - fuel side and fuel pressure issues all the time. And even PCM issues. Believe I know.
Also just some side info for whomever - the 496 actually can run decent on 7 cyc - the idle will be somewhat rough but off idle it does not seem too bad for running - a lack of full range rpms will missing thou.
Also just some side info for whomever - the 496 actually can run decent on 7 cyc - the idle will be somewhat rough but off idle it does not seem too bad for running - a lack of full range rpms will missing thou.
#18
I have a 290SC (enclosed head) with a stock 496MagHO and with the Stock (non-"velocity") Merc Bravo1 28p I got it to 67 at ~4600 to 4700 rpm (65 gallons of fuel, gear and 2 adults). I sent the Bravo1 to Scott at Velocity, had it labbed and now it does 71 mph at ~4900 rpm down wind and 70 mph up wind (60 gallons of fuel, gear, 2 adults and a child) and it had more I could've squeezed out of it. With the original labbed velocity prop (a Bravo1 28p labeled Velocity-1) that came with the boat, Scott also labbed it, however, I haven't had the opportunity to really test it.
#20