Adding a procharger to a 300hour hp500efi ?
 

Should I be concerned with my engine if I add a procharger to it now when she is 300 hours old? Did the valve springs and lifters at 220 hours. Aside from head gasket change, is there anything else I should do?

Or do I run the boat for another 100 hours and look at a complete rebuild, or engine swap?

Just wanted to get some members thoughts?

If I procharge now (low boost) can I run till 500 hours? Or is that pushing it?

Re: Adding a procharger to a 300hour hp500efi ?
 

My bet is BOOM.

I wouldn't add a blower to a 300 hr old motor. Rebuild it top to bottom at 400hrs and build it to take a blower from the get go.

Re: Adding a procharger to a 300hour hp500efi ?
 

I would go through the motors first.....and BTW: I have a set of M-3 intercooled Prochargers on 500EFI's that will be for sale cheap. Available in Oct/Nov. when we pull the motors out this winter.

Re: Adding a procharger to a 300hour hp500efi ?
 

How did they work for you? Why are you pulling them off? Did you have to have the computers recalibrated? What hp and boost did you run?

They seem like a good system.

Re: Adding a procharger to a 300hour hp500efi ?
 

Bought the boat 2 days ago. Not sure exactly what I have yet. Install was very professional but the motors were run hot with bad impellers and need to be opened up anyway. Plan on making 540 EFI's. Prochargers seem to run fine but personal preference is to run without them.

What I do know......
M-3 systems with intercoolers
Computers were re-calibrated
fuel delivery system changed as required (don't know what was needed or used)
Install was very custom, even powder coated the piping that carries the air to the intake.

Re: Adding a procharger to a 300hour hp500efi ?
 

Have you run the boat yet?

Any pictures of the engines and how it was routed?

Re: Adding a procharger to a 300hour hp500efi ?
 

Ran the boat yesterday, first time out, 98 degrees.
10,500# dry 38 Formula, full fuel, light gear, XR's w/ 34 pitch bravos.
3,200 rpms, 50 GPS
4,200 rpms, 69 GPS
This boat reportedly does 74 max w/ stock 500's and 28 bravos.

Re: Adding a procharger to a 300hour hp500efi ?
 

Put the blower on and run it. Do all you guys with blowers rebuild at 300hrs? I bet not. Think of it this way, your engine without the blower has less wear than an engine that has had a blower on it all its life. I bet there are plenty of blower motors with 500+ hours on them. Anyone? If it is put on correctly you should fine.

Re: Adding a procharger to a 300hour hp500efi ?
 

If your lower end is good sahpe it could posibly live fore quite a while, its all in the tune and not getting to boost happy.

Re: Adding a procharger to a 300hour hp500efi ?
 

I'm with Airpacker on the rebuild. You definitely need the head gaskets (Cometic) and better rod bolts and lifters wouldn't hurt either.

On another point, there are 6 @ 90 degree elbows, one abrupt expansion into the intercooler, one abrupt contraction after the intercooler and one abrupt transition into the throttle body on the Procharger system. All this amounts to big pressure losses, forcing the blower to work harder and hotter to deliver a given amount of boost to the intake.

If you have the headroom this system is much more efficient. It has one vaned elbow into the throttle body after which air velocity (and pressure losses) are greatly reduced through the upper plenum and intercooler.

Sorry, I just get crazy when I see so many elbows.

Re: Adding a procharger to a 300hour hp500efi ?
 

It is interesting when I see the "mouse trap" looking procharger installs with a dozen 90's and bends to remotely mount the innercooler,I only used 2 90's and a couple of back to back 45's,when I tested pressure drop it was less than 1 psi including the innercooler but on systems using the smaller aw324innercoooler I'm sure it may exceed 3 psi,your package really cleans it up and looks professional,Smitty
PS-was great meeting you at st claire.

Re: Adding a procharger to a 300hour hp500efi ?
 

I know what you guys are saying about the 90 degree bends. But I am not looking for 800 plus hp. just a low boost, intercooled, engine. I also don't have the engine room, this is for my 288 Sunsation. I am also limited in front of the engine. I am leaning towrads Procharger because a good personal friend is a dealer here in Ottawa, and wants to get one out.

So no doubt the inter cooler will have to sit to the left of the engine, and run 5 feet of piping. But if it still produces 600 plus hp, I'm fine with that.

I also am factory removing the heads to have the valve seats, and guilds looked at. Along with new gaskets too.

So if I prop the boat to turn no more than 5000 or so rpm after the blower, and be easy on the stick, I think I can get another 200 hours out of her. Then rebuild to suit the procharger a little better.

Just thinking out loud here.

Re: Adding a procharger to a 300hour hp500efi ?
 

heres a pic of how I plumbed my single,same deal with no room for inercooler except off to one side,works well and was cleanest way I could mount it,Smitty

Re: Adding a procharger to a 300hour hp500efi ?
 

Hey CJ, just an FYI the aw324 intercooler which usually comes standard on an M1 fits just fine on a 288 on the front of the motor with only one 180 degree bend. I think the M-3 intercooler would have to be mounted on the side. Im looking to upgrade the innercooler for next season maybe to run a little more boost. Im running up to 6psi now with the aw324 and M1.

Re: Adding a procharger to a 300hour hp500efi ?
 

Thanx for the info Daga. My guy is still waiting to hear back from the main marine guy at Procharger. He has been tied up at a show somewhere.

Re: Adding a procharger to a 300hour hp500efi ?
 

I agree, Go through the motors. I don't know of too many peaople getting more than 200 to 250 hours in a blower motoer without some kind of maintenance. A stock motor with 300 hours will start to put fuel in the oil during the first year. Best to rebuild, Cometic gaskets , studs, springs, valves, etc.