I recently purchased a 93 bayliner jazz, top speed is only 30, does it go faster?

Question

I recently purchased a 93 bayliner jazz, top speed is only 30, does it go faster?

Answer 1

To make your boat go faster you need to install a larger prop,but there is a down side to doing this.By installing a larger prop you will loose

your hole shot.By this I mean it will take your boat longer to get up on plain.You will also only get between 3-5 miles an hour more speed.You

probably know this but are you trimming out the boat when you are trying to get your top speed?If not then you will get another 5-8 miles an hour by doing this.I hope this helps and good luck.

Answer 2

Is the engine running max RPM if so than yes>

Answer 3

Your top end with one person on board should be around 42 mph.

You are running a power prop for water ski-ing, or to haul a lot of weight in the boat. It will give you more power to pull a ski-er up out of the water, or lift the boat on plane when there are a lot of people in it,  but it will also lower your top end speed.

You need more than one prop. One for boating, and one for ski-ing & hauling your friends around. There is a wide variety of props available for your engine. When choosing the right prop for your needs, remember that the FLATTER the blades on the prop, the more pulling power your boat will have, but the lower the top end.

To get a higher top end speed, you want a speed prop with blades that are not as flat as power props.. They won't get the boat on plane as fast, but they will give you a higher top end.

The angle of the blades is called PITCH and is usually stamped on the blade somewhere as a number such as 19:1. The theoretical disatnce, in inches, that a propeller travels forward during one revolution. Think of pitch as speed. The higher the propeller pitch that the engine can turn, the faster the boat will usually go.

Pay attention to the manufacturers reccommended maximum / minimum prop pitch. Too much or too litlle pitch will affect the engines ability to reach reccommended RPM's.  An engine that does not reach the recommended RPM at full-throttle is in an "over propped" condition, resulting in "lugging". This severe strain can lead to detonation, piston seizure and engine damage. An engine that revs past the manufacturer's recommended RPM will have higher than normal wear and can also be damaged by fatigued parts breaking and passing through the engine.

Answer 4

No..it won't go much faster...the "jazz" was only available with a 90 hp motor and just simply won't do much more than about 30, especially with more than 1 or 2 people.  There are some little tweaks here and there you can do with the motor, but basically you have a upper 20's/30 mph boat.,,,end of story.

Also, I'm not real sure what the previous posters are speaking of regarding propellers and trim, etc.  THE JAZZ IS A JETBOAT!!!  It has an impeller and cannot be trimmed...the jazz doesn't have trim tabs..(the jet nozzle can be trimmed a bit but has no substantial effect on top speed)

P.S.  mrfixit and ranger's info would be correct, however, if the jazz had a standard propeller drive system.

Answer 5

I was a little confused there for a minute, but Jason reminded me, I've only seen a few of these in  this area.  I think 30 is about right.  Good luck!