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Props for 292 with 6.2

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Old 05-22-2016 | 11:13 AM
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Originally Posted by netprophet
I just got my 2009 Formula 292 with 6.2's, it has the 28 pitch Bravo 1's, I've noticed that the props start blowing out right at the point where the bow starts to come down and then they hook up. I read on here where someone else with that problem went to 26 pitch props and their happy now. I'm debating do I get my props labbed or just buy 26 pitch props? Opinions?
Ditto on my situation, everything is the same for me. I talked to Brad at BBlades, and he said I need to give him a few numbers before proceeding. First, top speed and the corresponding RPM's. This will give him the slip at the top end as a starting point. I will also note when the props start to blow out coming up on plane. I thought maybe he would have a generic answer as to what I needed, but it looks like every boat is a little different.

I have only had mine out a couple of times, so the learning curve is still steep. The only modification that I am aware that has been done to my boat, is the baffles have been removed from the exhaust. It is a well built boat, and I believe we made the right choice for our needs, but there definitely is some tweaking that could make things better. I am leaning towards labbed props before dropping pitch, but then, I know just enough to be dangerous!
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Old 05-22-2016 | 02:31 PM
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Some results from the weekend with the labbed 28's... So cutting edge added an inch of pitch and and labbed my stock 28's I gained 2mph at cruise and top end is where they shined. I went from 5k at 70 mph with a perfect storm 72 too 72 with full fuel and four on board including coolers and beach gear and dead flat water. When the wind picked up I ran 70 into the wind with 6" chop. 1 footers with wind at my back 74.5! all turning 5200 rpm. Low fuel and a single occupant speed run could be 75+!!! Thank you Auggie @ cutting edge!!!
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Old 05-22-2016 | 02:47 PM
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How is the performance out the hole?
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Old 05-22-2016 | 04:17 PM
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Comes out of the hole great. Same as stock if not better
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Old 05-22-2016 | 10:42 PM
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Originally Posted by dp9650
Ditto on my situation, everything is the same for me. I talked to Brad at BBlades, and he said I need to give him a few numbers before proceeding. First, top speed and the corresponding RPM's. This will give him the slip at the top end as a starting point. I will also note when the props start to blow out coming up on plane. I thought maybe he would have a generic answer as to what I needed, but it looks like every boat is a little different.

I have only had mine out a couple of times, so the learning curve is still steep. The only modification that I am aware that has been done to my boat, is the baffles have been removed from the exhaust. It is a well built boat, and I believe we made the right choice for our needs, but there definitely is some tweaking that could make things better. I am leaning towards labbed props before dropping pitch, but then, I know just enough to be dangerous!
I have a question about your baffles being removed, so they are stock corsa's but you had the baffles removed? I called corsa about the baffles after reading that some people had the baffles chiseled out, and they of course wanted to sell me new tips, I asked about just having the baffles removed and he said I risked reversion, water getting into the manifolds and even the engine.
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Old 05-23-2016 | 12:38 AM
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Originally Posted by netprophet
I have a question about your baffles being removed, so they are stock corsa's but you had the baffles removed? I called corsa about the baffles after reading that some people had the baffles chiseled out, and they of course wanted to sell me new tips, I asked about just having the baffles removed and he said I risked reversion, water getting into the manifolds and even the engine.
I will have to check it out. This is info I got from the previous person, whom I have not met face to face. I will look and get back to you. You have given me information that I was not aware of. I believe the valves close to the transom position and return to the hub exhaust position when you cut the power, thus eliminating risk of reverse water flow.

Last edited by dp9650; 05-23-2016 at 08:41 AM.
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Old 05-28-2016 | 10:31 AM
  #27  
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Originally Posted by netprophet
I have a question about your baffles being removed, so they are stock corsa's but you had the baffles removed? I called corsa about the baffles after reading that some people had the baffles chiseled out, and they of course wanted to sell me new tips, I asked about just having the baffles removed and he said I risked reversion, water getting into the manifolds and even the engine.
I imagine many that read this are already aware of how the captain's call works. First off, I have rubber flaps on the exhaust tips, so that is the first check valve. Secondly, the valve that switches the exhaust will only open when the key is on. If you are running your system in the open position and shut the engines off, the valves close, making reverse flow difficult.
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