swan2

thinking about procharging my boat it has a 502 mpi 1998 model will it be a bad idea or will it hurt the engine?

swan2

The motor is all stock and would like to procharge it. Would like someone that has had some experience with the procharger and if the 502 mpi needs any internal engine parts or can this just be a bolted on system. Thank you very much for your help.

x7734x

How many hours on the motor? I had an HP500 with a vortech supercharger at 5psi and i lost a rod bearing at about 200 hours.

articfriends

iTrader: (1)

Depends on how many hours you have and condition of gaskets,rings,brgs etc.If your buying a m-1 then you'll probably be OK but there is no guarantees. If your buying a m-3 and aw504 innercooler (which will allow you to run more boost in future then I would say pull heads,inconel valves,composite head gaskets etc plus OTHER upgrades-drive,oil cooler,hyd steering etc,Smitty

ACS

Have a 496ho and put on 240 hours(had 300 total) on my motor with the pro charger without a problem. If you drive it responsibly you wil be fine

Griff

How many hours on the engine???? You should make sure its 100% healthy first with a leakdown test. also you for sure replace the stock head gaskets with cometics.

SkiDoc

iTrader: (4)

I did it with good success. If you have a smaller boat that you don't need to run at higher RPM you can expect good results because boost does not even come in until higher RPM's. Most of my engine hours were cruising and not even under boost. If you have a bigger boat that really lugs the motor/s you might want to think twice.

swan2

my boat is a 27 foot virage with 2 step hull it has a bravo three out drive and the motor has about 200 hours on it. it seems to run perfect and is running about 65mph now on gps all day long. do you think i can get close to 80mph out of it.

swan2

The boat planes easy and is on plane at about 16mph. do you think i have to many hours on the motor? I do have a brand new set of afr heads for a a 540 stroker motor should i put these heads on the 502 or bad idea? with procharger. or just use the stock heads?

scarabman

iTrader: (1)

I personally would be looking at a Whipple system instead but the I can tell you from having had a Procharger on a 502 on my old boat, they do make some HP.

that aside, you are very unlikely to get to the 80 mph mark because that Bravo 3 drive is going to severley limit you in several ways, prop selection and hydronamics. If you supercharge you should definitely consider installing a standard Bravo or better yet XR.