Bayliner 215 2007

[mike165]

Have just finished setting this up,bought it empty no motor,drive etc,had a new 350 vortec in a 80,s Bayliner stripped it all out into the new one now playing with props,motor is 330HP,1.1.50 gears,came down to a 4b 21x14 alu runs to 5200WOT at 75KPH no bow lift handles well,I was about to buy the same in SS when a 4b 22x13.5 SS came up cheap,how do you think this will be compared to the 21x14

 

[steelespike]

Re: Bayliner 215 2007

First to avoid confusion prop size is allways written diameter X pitch 14 X 21
I don't think the 13.5 is intended for your I/O.
Prop calculator says your slip is at 32%,very high. 12-14% is more typical.
46.6 seems slow to me. I think dry weight is about 2800 lbs.
Is the lack of bow lift the prop or a hull problem.
4 blades are said to provide stern lift out of the hole and bow lift at speed.
4 blades usually won't provide the best top end.They do provide the best low to mid range performance.
Would be best if you could find a dealer that will let you test props with your intention to buy from them.
Usually requirers a deposit but at least you will know your running known good props.Your 14 X 21 doesn't appear to be doing the job.
Is the motor rated for 5200 rpm?

 

[theBrownskull]

Re: Bayliner 215 2007

First check to make sure the motor is rated for 5200 rpm's. I know the Mercruiser 6.2 has a max rpm of 5200. Then I would check to make sure the tachometer is correct. If the rpm's are high I would go to a higher pitch prop. I would check for a dealer like steelespike said to see if you can test out props.

 

[mike165]

Re: Bayliner 215 2007

hanks for the replies,these are the motor specs Mercruiser long crate motor
Horsepower - 330 hp @ 5,000 rpm
Torque - 380 ft/lbs @ 3500 rpm
Compression Ratio - 9.1 to 1
Block - Cast Iron 4-bolt, 4.000" Bore
Crankshaft - Cast Nodular, 3.480" Stroke
Heads, Chamber Size - Vortec Cast Iron, 64cc Chamber
Valves (I/E) - 1.940"/1.500"
Camshaft, Lift (I/E) - 0.431"/0.451" Hydraulic roller cam
Camshaft Duration @ 0.050" I/E - 196/207 degrees
Thru transome exhaust
Carter elec fuel pump

Weiland Manifold 600cfm 4 b vac back Holley,Hellfire dist,98oct Premium fuel.The motor has done 80 hours,Tacho has been checked OK
2xGPS one in the Lowrance Elite,and a Hud stand alone,there are no marine shops here that let you do prop test,I have seen boat tests on the 215 that state 50mph @ 5K on a 5L MPI,I also have a 14.5x 23P 4b that spins to 4800rpm at about the same speed

 

[mike165]

Re: Bayliner 215 2007

First to avoid confusion prop size is allways written diameter X pitch 14 X 21
I don't think the 13.5 is intended for your I/O.
Prop calculator says your slip is at 32%,very high. 12-14% is more typical.
46.6 seems slow to me. I think dry weight is about 2800 lbs.
Is the lack of bow lift the prop or a hull problem.
4 blades are said to provide stern lift out of the hole and bow lift at speed.
4 blades usually won't provide the best top end.They do provide the best low to mid range performance.
Would be best if you could find a dealer that will let you test props with your intention to buy from them.
Usually requirers a deposit but at least you will know your running known good props.Your 14 X 21 doesn't appear to be doing the job.
Is the motor rated for 5200 rpm?

sorry about the size the wrong way around[mental block]!! which program do you use for the prop data,I realise the 4b are not good top end props,more keen on good hole shot,low bow lift and mid range,at the moment we cruise 4200-4400 60-62 kph where the motor sounds sweet and runs easy

 

[steelespike]

Re: Bayliner 215 2007

I use the polson enterprises calculator.
I searched prop calculator used the 3rd one down titled prop calculator it opens in a green page.
I think the motor would be happier at 4800 w the 4b 23" than 5200 with the 21. 23 should have good hole shot
be less fussy at slow cruising speed and respond better around the dock theoretically faster at a given rpm than the 21.

 

[mike165]

Re: Bayliner 215 2007

I use the polson enterprises calculator.
I searched prop calculator used the 3rd one down titled prop calculator it opens in a green page.
I think the motor would be happier at 4800 w the 4b 23" than 5200 with the 21. 23 should have good hole shot
be less fussy at slow cruising speed and respond better around the dock theoretically faster at a given rpm than the 21.

Thanks for taking the time to explain that,I'll try the 23 again

 

[theBrownskull]

Re: Bayliner 215 2007

Sounds like a 23 pitch might work for your setup. Try the Mercury propeller selector at the link below. At the top of the page follow the steps and it should get you where you want to be.

Propellers | Mercury Marine