Bravo Drives? 1 Or 3?
03-24-2004, 07:58 PM
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Bravo Drives? 1 Or 3?
I will be replacing my bravo 1's this summer. I have a 29 formula cruiser with twin 454's Is their any gain in performance with the bravo 111, I have heard that with through hub exaust the bravo 111 restrict's the 454's.
03-25-2004, 12:15 AM
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Formula29:
Bravo III's are better for bigger heavier boats that need extra push to get them up on plane easier, however they will cut top speed on your boat probably about 5 mph and they are slightly more exhaust restrictive on through the prop exhaust only.
Raylar
Bravo III's are better for bigger heavier boats that need extra push to get them up on plane easier, however they will cut top speed on your boat probably about 5 mph and they are slightly more exhaust restrictive on through the prop exhaust only.
Raylar
03-25-2004, 07:45 PM
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The exahust restriction is easy to fix. Mercury issued a service bulletin a few years ago on this issue. Simply replace the exhaust "bellows" with an exhaust "tube". The tube is a Mercury part. With the tube, there is not an airtight seal where it connects to the outdrive. It allows more exhaust gases to escape.
03-27-2004, 02:56 PM
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B3 isn't particularly stronger than a B1.
The advantage is that a B3 has no steering torque (which is a non issue in a twin application since the two drives cancel each other out), and a much better BITE on the water. Low speed response at idle speeds is far improved, and prop slippage coming out of the hole is no longer a problem.
Disadvantages are: expensive props. well documented corrosion problems in saltwater. expensive props. and expensive props.
The advantage is that a B3 has no steering torque (which is a non issue in a twin application since the two drives cancel each other out), and a much better BITE on the water. Low speed response at idle speeds is far improved, and prop slippage coming out of the hole is no longer a problem.
Disadvantages are: expensive props. well documented corrosion problems in saltwater. expensive props. and expensive props.
