Technical opinion on Procharging my 01' Baja H2X
 

The salt water has eaten my brain enough to wanna go forward with my plan to Procharge my 2001 Baja H2X. Here are my specs and questions.

2001 Baja H2X 24' with the Mercury MX 6.2L MPI, 377 CI, 320hp. 1.50 Ratio Bravo 1 Drive

I talked to Willy today at MAC Performance in Florida and he set up a kit for me $5,400.00 out the door. It is the 5.7L kit set up for a 6.2L pushing 5 PSI and he said I don't need to upgrade the fuel delivery system unless I decide to go higher in boost. Has anyone else dealt with him or his company before he talked like hes setup quite a few larger boats? I also want to know if there is anything I should do to the drive Mercury says its good up to 400 HP as is and I can't immagine on 5 PSI it will be pushing over 450 HP.

the drive will survive if you keep out of the throttle until you get going app 50 mph,no holeshots,that kills bravo drives,i dont know anything about procharged 6.2s.keep us informed,sounds like a great project.

The drive is the least of your worries . NO such thing as a bolt on and go pro charger !!!!!!! :poopoo:

If you have a Barvo 1 on the back now...why waste money on a pro charger when for a few dollars more you can get a big block and be better off in the long run.The BBC will drop right in without any mods. Your accessories should also bolt up leaving you with only exhaust to get. I dont care for superchargers myself because they are tough on a motor. I dont believe not needing to do anything to the fuel system either. Usually when a supercharged motor goes South...it is because it wasnt getting enough fuel...so it runs lean, gets hot and melts stuff down inside the motor...usually leaving you with an expensive trot line weight.

AMEN!!!

They recommended not changing the fuel system???? You are going to increase the power by approx. 50% and nothing needs to be done with the fuel system? What does the pickup in the fuel tank look like? How big is it? What about the fuel lines? The filter head with it's 1/4" npt fittings. Does it have an anti-siphon valve?
All of these items were installed with the stock 350 hp engine. That's what they are designed to support....not 450 hp. These things may be fine, but more than likely some or all need to be addressed. I can almost guarantee that the pickup in the tank is a plastic pickup tube with a VERY small hole. Then the adapter fitting that screws into the top of the pickup blocks off half of the hole, making it even smaller.
You are going to have a much higher fuel pressure with the Procharger. You are going to need to be able to move enough volume of fuel to supply that amount of increased pressure.
What I'm trying to say is that I have done a lot of Procharger setups and have seen tons of them come in that are in boxes because none of the items I mentioned were addressed. Make sure that you do it once, and do it right. If you can't afford to do it right, then wait until you can afford it. It will cost a little more to do it right, but it will save you a ton of money and heartache in the end.
As mentioned previously, there is NO such thing as a bolt on supercharger kit. If they told you up front about everything else that needed to be done, they would sell a whole lot less kits.
Don't hesitate to contact me if you have any questions. I would be glad to help you out the best I can with advice, etc. Find someone that you are comfortable with. Do some research on that person to be sure he does good work. Good luck.
Eddie

+1 i did a 383 and that was in a vett wot a PITA and there tec support sucks .runs great now but no thanks to procharger .

here's some info when I had one...

http://www.offshoreonly.com/forums/g...6-2-today.html

With 450 hp, the B1 will work fine. For that power, it'll be better than an xr. Consider what others have said. When you are done with everythng, you could have installed a refreshed 502MPI with a Bob cam for the same money. Think about it.

Eddie

Sent you a PM the other day, have you had time to take a look see?

Yea I don't mind spending the money to do it right I am stationed in a bum area and I would rather paddle my boat then take it one of these local shops haha. I am on my third inducted car so I know superchargers fairly well.

If you boat in salt water you need to determine the metallurgy of the intercooler. If it is aluminum like the old prochargers the intercooler will only last a year and they were $1200 in 1998!! Maybe not a deal killer but you need to be aware. Also, watch the intake if water leaks into the intake it will make a rusty mess.

No oil cooler and only 4.5 qt. oil capacity on a 6.2L MPI.

It took 5.7 qts last oil change!

Well thats nice of them when they have sold 1000s with 425hp in the form of the 496ho

Jeff do you recall if your H2X had any model specific parts on it to make it work right. I know the 6.2 motor already has forged parts stock so thats a plus in my corner. I see yours had an MSD ignition of some sort and I see the exhaust was upgraded. Would you happen to know what spark plugs were in it? I was planning to leave mine stock except for the needed upgrades to make it reliable.

Knot, if your saying an oil cooler would help I don't see it being to difficult to retro fit one dirrectly off the steal oil filter lines to a small oil cooler. I could even throw a little 12v fan to cool the oil cooler.
:daz:

My bad. You are correct that the early 6.2's took 5.5qts.

MX 6.2L MPI GM/Mercury 377/6.2L V-8 2000 - 2002 0L680003-0M299999 5-1/2 US qt (5.2 L)
MX 6.2L MPI GM/Mercury 377/6.2L V-8 2002 and newer 0M300000 and up 4-1/2 US qt (4.25 L)

Contact Bob Llyod at Full Throttle Marine. He has experience with adding superchargers to 6.2's. Good guy and very knowledgeable. www.fullthrottlemarine.com

No. The B1 is rated for 400 and was sold with the 496MAG and now the 8,2MAG, not the HO. That is the B1X rated for 450 hp. Before that, yes the B1 was sold with the 502, but I'd think the gears was better quality back then as is the case with the XR junk gears now.

I looked the Full throttle web page and the Whipple setup looks alot nicer then the procharger. They have kits for 02-05' so I hope I can make it work on my 01' I am gonna give bob a call today I will post the info when I get it.

Hi Razor i have twin 496ho in my boat ,how can i tell if i have the B1x or just the B1 Thanks in advance .

unfortunatly, no. Got it on trade and took the customers word on what had been done. sold the boat and never heard anything bad since then !

Good move on going with the Whipple kit.

Well after talking to Shooter last night I think it would be smarter to wait until my 11 year old motor gives up it's ghost and then swap it out for a 502. Too much red tape around superchargers in boats then add the destroyed resale value it just isn't worth it. Thanks for the info Shooter I will contact you again when it comes time for a new Bullit!

Just to throw in my 2 cents. There is no "bolt on" and go kit. Like Eddie mentioned there are a lot of things that need to be addressed to be reliable. The 6.2 does not have forged pistons. They will eventually fail. The procharger fuel management system is crude at best. You need to set it up with a 2 bar map sensor and reprogram the ecm to get the tune correct. I've done prochargers and whipples both on 6.2L but we always went through engines and upgraded pistons, added oil cooler and upgraded the fuel system. If you do it right you can get a dependable 500 HP or more if you upgrade the heads. We've done several with the Edelbrock Etec heads and they really work well. Around 565 HP with 6 psi boost.

Bob Lloyd
Full Throttle Marine

I agree with the above on fuel systems, Aeromotive makes some nice stuff, you may want to look them up. I have a freind with a pro charged 454mpi CAST 330hp engine, running strong no issues.

For those questioning the internals of the 6.2 ls based engine read this and get back to me http://www.hotrod.com/techarticles/h...g_bang_theory/

Do your research for fuel, and be a pioneer! I would love to see the results. I don't think anyone has enough experience to be commenting on blown stock small blocks in boat. Sometimes guinea pigs end up being geniuses

The Merc 6.2L MPI that came out in 2000/2001 to replace the 7.4L MPI is not an LS-based motor. It is the same 350 Chevy long-block supplied to Merc from GM that Merc stroked to 377 cu. in. Mercury does not use forged pistons in the 6.2L MPI. Bob has experience with adding supercharges to small-blocks in boats so he absoutely is one to comment on the subject.

I'm sorry, my bad for sure. Thought it was in the 4.8/5.3/6.0/6.2 ls series.

I was calling any one person out, as much as I was calling everyone out. This site has a lot of knowledge, but it also has a ton of "you can't do that" sometimes without reason.

I still think he should go for it :lolhit:

Interesting stuff, Bob I got your message I will give you a call back tomorrow to discuss this further.

Our kit can be bolted to the 2001, very easy to do. Just some minor changes to the 2002 kit. If its a true 2001, then it has a MEFI3 PCM instead of the PCM555 so we've done plenty of those.

If your boat was originally delivered with the HOs, they should most certainly be B1X, should say on the stickers as well. It's been quite a while since I've taken a B1X apart next to a B1, so I won't take the chance and give you a wrong answer. Shoot Mr. Gadgets here on OSO a pm, he's the big B1 drive guru. I'm sure he will gladly answer all your B1X questions.

Hope this helps.

Funny you should say that , Mr G has one of my drives at the moment , he has allready had one now he is doing the other / machine for a steel collar ,renforced top cap and set up the gears .i never bought the boat new only had it 2 years but i am sure they are stock B1 and they came new with the boat with the 496ho 2001 pantera ,even thow i live in the UK i found MR G to be the man for for building the B1 very good and reliable.

When I gave mercury racing my engine # they said it was a 2000 model engine which is funny because on their prop selector web page it only has 2001 for an option on my motor not 2000. Either way it is deff not a 2002 so I am sure it does not have the PCM555. Whipple is looking like a much better option for my boat at this point.

Mercruiser started supplying 496"s in late 2000 and we have personally seen a few. ALL 496's ever produced by Mercruiser have the PCM555 ecm's.

Best Regards,
Ray @ Raylar

If it is one of the very early models, it might have a forged crank.