What is wrong with putting a procharger on a boat engine?

What is the differece between putting a procharger on or just modifying the engine in a different way for more power.

I read all the time here that guys are changing things to the engine to get more horse power, but have not heard anything good about adding a procharger.

I am new to this area of boating and the used boat I bought in oct of 2010 has a m1 procharger on it.

Start here.
http://www.jegs.com/s/tech-articles/...+-+Centrifugal

Everyone has an opinion. I would consider doing a roots type (Whipple) for example to be more reliable. Personally, I view all of them as time bombs. There's a lot more to it than bolting on a "blower" and mashing the throttles. Some engines are good candidates for supercharging and some not so much. Then you need to have outdrives that can handle the extra power. Some hulls respond better to throwing power at them better than others.

A lot of people in this hobby enjoy engine building, chasing a speed goal, racing, etc. I enjoy going fast as well, but I'm a bigger fan of stock reliability. For me it's stock black motors and family fun on the water. For the next guy it's helmets, Life Line jackets and breaking the 150 MPH mark. To each their own.

I don't see anything wrong with it but if I force feed my 525 in the future it will be with a Whipple Charger .

Just to be nitpicking a bit. The whipple is not a roots style sc, but a Lysholm/twin screw. They are quite different, and deliver boost in quite different ways.

Anyway regarding the question. SC's deliver other things than power. One of them is heat, which if the motor is not build properly, will ruin the motor. This is also why the 496 in stock form is such a bad choice to boost, but then again, it's a bad choice for tuning, if you don't change the internals to forged parts, even if you do n/a tuning. The centerfugal sc's is the least efficient sc's out there. They develop as much heat, if not more than a roots blower, they have an efficiency below 70% and take a long time to spool up. They are cheap though. The only application that works well, when using centrefugal compressor, is when turbine driven. As many know, turbos are very efficient, but takes some knowledge and time to set up in a boat. If you want to run forced induction, you need to build the motor to handle the boost, but also the fuel system, cooling system, drive line and steering ect. right for it as well. Anyway as Baja 342 suggested, go with a twin screw sc like fx. the Whipple.

I have a friend that bought a boat back in 2000 that had twin 454's with procharges. He has run the boat hard every year. Motors are still going strong. Has torn up 1 outdrive in all these years.

If they are set up right they will run great and live a long life.

I am putting a 540 with procharger in 04 25ol. Schumaker built the engine right from top to bottom 4 years ago and engine has been great. 800hp/800lb. I like the power curve of the procharger, just keeps pulling

I have a M3SC kit for sale, very very low hours as it never made a full day of running without shreding a 150.00$ belt or braking off the front of the motor poping and pissing!
Give me a roots blower any time (letts play all day).
The projunk made 14 lbs and went 96mph 1 time the roots makes 6lbs and runs 94mph ALL DAY its just a pully change away!!!!!!!!!!!!!!!!!!!!

Thank you for the information. I will read the web site. I wanted a bigger boat that did at least 60mph. I found this one oct of 2010. bought it at, i thought a good price. The man i bought it from only owned it to years and used it 5 times. he new nothing about the boat except how to put gas in it. I talked to the originally owner and he gave me back ground info on it.

The boat is a 24 ft 1997 outlaw sst, wiith a 502 mag ho (2009) converted to carberated, m1 procharger 2007 , extra hollie fuel pump (2 fuel pumps on boat), a high performance manifold I believe he said, some extra high performance parts, 4 blade custome spinellie prop, made and tweeked for that boat. He had everything done by a marina or a professional in the field

I am going to take it to a racing shop to have it dyno test, and make sure it is set up correctly. This race shop works on high performace boat engines. They are also going to put a rev plate on it or a msd box on it for me,

I am trying to learn as much as possible about this new hobbie. I am a recreational boater. But I like to go fast once in a while. not into racing or abusing the boat. I am a perfectionist when it comes to my stuff. Just using it for enjoyment and to enjoy a speed rush once in awhile.

My mechanic and i had it up to 78mph, the original owner said it would do 80mph - 85mph with the trim up all the way. At 78 mph we had alot more trim to move , as well as trim tabs, but it danced alittle, So this spring i am putting imco add on hydraulic steering arm on it. It came with a side winder arm .
I think I have typed to much so , so long , and thanks again

i boat the boat with the m1 procharger, so it is what it is. thank you for positive feed back

How do i know if the engine is properly built for it? Will a race shop with a dyno machine tell me everything? I am, taking it there in the spring, it is a 502 mag ho (2009) turned in to a carberated with high performace manifold, m1 pro charger, two fuel pumps and , a spinelle prop