Hey Bob, What are you doing over here in the supercharger section? Clay trying to convince you to buy a Whipple LOL

Any blower that puts a smile on your face and runs reliably is a good blower.

With that said... The Whipple system has a lot more paramaters controlled and monitored by computer where the others rely on the installer to tweak it in manually. The Whipple also has more computer controlled safegards built in to save the engine or warn the driver if something in the basic engine systems (Like Fuel pressure, water pressure, bad impeller etc) goes south. That my friends is a lot of "Piece of mind", my .02, happy boating everyone!

Coke is better with JB and Pepsi is OK with RUM. There, that settles it! Drive reliabilty starts at the helm.
Tim T.

93formula, we've been over this a million times, I'm just not sure how to make it clear to you, airflow does not equal AE, there are other parameters. A screw compressor does not fall off, they have a very flat curve that typically varies approx. 10% through the rpm range. A centrifugal ranges much more but is not more efficient. Also, if you use a centrifugal that made peak efficiency on peak rpm, you would have very low, low boost levels at low rpms. The graph you always refer to is air flow, not efficiency. So your statement that they are more efficient is very inaccurate. In fact, if you measure efficiency at every rpm level, then the screw compressor will almost always be far superior to a screw compressor, just like overall horsepower and torque increases. They make more power from 1000rpm on up. As for drives, it's a product of power, vs. weight vs. driving style, vs. prop design, vs. envoirnment, etc. Not only that, power is a function of throttle position, if you don't open the throttle, you don't make any power meaning that everybody is in control of their power.

Centrifugals do "spool up" like turbos to some degree and pump out a lot of air at higher rpms, that doesn't mean more power, you have to understand that. You always state the graph, but that shows airflow, NOT blower efficiency. Do you think the centrifugal co. sale a supercharger that is the highest efficiency point on each motor? I don't think so, that would mean each kit, everytime you change pulley, raise rev limit, etc. then you would have to change blowers to maximize efficiency. Instead, their constantly working on making a broader efficiency curve and flow pattern to create more power at low speeds.

What's even funnier is that you state procharger customers have had some problems, but typically with fuel management, well who's selling what? What is bolt-on? Have we missed the boat by having superior testing procedures, sophistacted equipment, strong racing contacts, OEM contacts, etc? Because I thought the fuel management was always part of the kit. If a company can say, hey this is the best, most reliable, no problems product, yet you have to always rely on somebody else to get it to work properly, how credible is the mfg? I understand their are custom applications, but kits for 500 HP EFI's, 502 Magnums, etc. are OEM production motors with very little variance.

I love everybodies opionion, but you always state inaccurate information. It's so much more complicated than you seem to realize, theirs compressor size, boost level, rpm range, inlet and discharge size, etc. But I'm telling you, centrifugals are not more efficient than screw compressors, especially throughout the rpm range. We can make the same peak horsepower as any centrifugal at any rpm when sized correctly.

Umm, Prochargers are not quieter than a screw compressor at idle.

I don't think a magazine will ever do that test, a lot of politics, everybody advertises so nobody wants anything said about them, I tried getting this going many times, intercoolers, blowers, EFI setup, etc. so you have to go off what guys tell you such as Phaff, GT, Teague, Wilkes, Perf. Marine, etc. or the info provided. Look whats real and whats not, and does looks mean anything anymore ? Look at what Mercedes has switched too, look familar?

Thanks,
Dustin

PS Sejman, isn't PRI Marine right near you?

Did I miss something?

Dustin,

I have always respected you on this board. I run prochargers but have never made a negative comparison or post about your product. In your post you are bashing procharger, implying that they sell an incomplete system, and they "have to rely on somebody else to get it to work properly". You sell a complete system for diff. engines right? 502 carb, 502 efi, 502HP, 454 carb, 454 efi etc. Thats great. Procharger sells superchargers, not complete kits. You buy their charger, your fuel pump, your fuel lines, you change the ecu, your guages, etc. I am sure if they did sell a complete kit that their price would be closer to yours. They also have decent tech. support, as do you. If you want to promote your product, great. If you want to sell "the better product" great, but do not be-little yourself by putting down your competition. I have their product and it is a good one. I have never experienced any problems. I am sure your supercharger has been installed improperly, right? I do not feel your post lives up to your rep. Misinformation will always be past around. How you deal with it is what can set you apart.

Friends,

As I read this thread I once again realize how fortunate all of us are to be in the position to own the boats we do. There is a passion that comes with performance boating, and this thread displays that via loyalty to one product or another, be we consumer or manufacturer. I don't think anyone is wrong here, I do think we all have our own bias and tend to justify what we've spent our money on. Whether it's B&M, ProCharger, Whipple etc. they all are fine products that deliver more HP and add to our boating pleasure.

I happen to have Whipples, and I'm pleased with their performance and Dustin's service. We completed our installation last August/Sept. Mine is triple installation in an app. 13,500 pound boat. No drive failures (XRs) (Yet) after about 100 hours with the Whipples.

Getting on plane, I throttle up to about 3,000 RPM very gently, boost will go to about 3 lbs. for 4 to 7 seconds until it planes off, then drop to -0-. There is no noticeable boost until about 4500 RPM and then runs about 6.5 lbs. at WOT.

I don't really "hear" the blowers until you get into boost, and frankly I really enjoy that sound The joy is somewhat muffled by the rapid movement on the fuel guages

Whatever Blower you're running, I hope you're having fun, and that someday we'll meet. If you're ever in the Fort Lauderdale area, we live in Lighthouse Point and I'd be happy to show you the boat. Time allowing, we'll take her for a spin and you can be the judge of performance, sound levels etc.

Take care,
Steve

Steve, what speed were you getting before you installed the Whipples and what are you getting now?

First of all, I don't have a whipple or procharger so I believe I can be unbiased. I think Dustin was just trying to clarify some facts that were unclear or incorrectly stated about both systems and don't believe he was bashing on procharger. Dustin is always here to help and answer questions from OSO members. I have never seen anyone from procharger here. I have also seen Dustin offer tech advice numerous times to people with prochargers. I also have heard numerous complaints about about poor tech support from procharger.
As far as blowing drives, that is a product of the torque created by the whipples. The amount of torque is strictly controlled by the amount of throttle applied by the driver.

Getting back to the original question, "Who has done these?" If nobody responds specifically that they have done this new package I would reccomend Tyler Crockett. ( http://www.crockettmarineengines.com/) He is near Port Huron MI. He did my whipples and many others he also does a lot of work on the HP500EFI's for the racing circuit. I know he knows his stuff about both. Also PRI in columbus Oh is pretty good too. I have had no engine work done there but I did buy Eliminator there and they are mostly a engine shop Talk to Rob. (http://www.primarine.com/)

Whippled Charged, You are so Cute when you get all excited .

Pyle