M2 240 EFI Pump - is it usable with new wear ring

[Wawando]

M2 240 EFI Pump - is it usable with new wear ring - YES - result video

Do you think that this pump is usable with a rebuilt wear ring?
Hi,
The impeller looks good to me but the housing looks like it might not take the 240 hp...
What do you think?

Thanks for the help!

 

[johnhibbs]

It looks like you had to cut the bolts to get it apart. Do you think you can get the remaining bolts out? How does the stator look? Are you sure you can get a rebuilt wear ring? That looks like a hydro-surge grate. You will need to replace that too. I would see if you can get everything removed before deciding to buy a wear ring. Does the engine run OK? Looks like a fun project. Did you get a good deal on the boat?

 

[Wawando]

Yes, i got a very good deal, but it has this interesting challenge too . The boat has very little use but was left on salt water for quite a while...
A fellow mechanic is in the middle of the job. He told me about the boat, the wear ring is already rebuilt, but i wanted to see how things are before he got ahead with the repair.
I got a little scared as you can imagine (yours is NEW when compared to this one...). By the looks do you think it is possible for this to work?

Which grate should i buy and from where? Specially after reading this: http://www.network54.com/Forum/143168/message/1026232182/HydroSurge+Weedless+Grate...+Not+So+Great! i should definitly change it!

Thanks for all the help!

 

[Double07]

My Utopia was like that when I picked it up. Same story. The guy I got it from left it in salt water for a long time, and there were a lot of hard white build-up all over the bottom of the boat and the pump. It was a lot of work to clean those up. I tried several chemicals that claim to eat away marine growth, and I soaked the parts in saltaway overnight, and nothing worked well enough. I ended up scraping and sanding those things down and repainting the pump. I pulled the motor and the pump out of the boat to do this ( I rebuilt the motor too).

The biggest problem I had was getting those two plugs out by the inlet grate where you drain/fill the pump with oil (the one you use a flat head screwdriver to unscrew). I ended up stripping them both, drilling them out, and re-tapping them. I also rebuilt the pump with a pump rebuild kit (mostly gasket and seal replacements), and I rebuilt the wear ring with JBweld. I didnt like the performance after all these, so I replaced the wear ring and impeller.

If I had to do it again, I will get a used pump instead. For the time and money I put into reconditioning it, I would have been better off with a fairly used pump. I saw one on ebay where the guy was asking for 900 bucks or best offer.

I would definitely make sure that I can get those plugs out and be able to get all the parts out before ordering any parts.

 

[Double07]

You definitely want to change the inlet grate. I got an aluminum 6 tine fixed grate from ebay for 75 bucks, and it works well.
Goodluck removing the bolts securing the inlet grate. I stripped mine too and had to drill it out and re-tap.

-Chika

 

[Wawando]

My Utopia was like that when I picked it up. Same story. The guy I got it from left it in salt water for a long time, and there were a lot of hard white build-up all over the bottom of the boat and the pump. It was a lot of work to clean those up. I tried several chemicals that claim to eat away marine growth, and I soaked the parts in saltaway overnight, and nothing worked well enough. I ended up scraping and sanding those things down and repainting the pump. I pulled the motor and the pump out of the boat to do this ( I rebuilt the motor too).

The biggest problem I had was getting those two plugs out by the inlet grate where you drain/fill the pump with oil (the one you use a flat head screwdriver to unscrew). I ended up stripping them both, drilling them out, and re-tapping them. I also rebuilt the pump with a pump rebuild kit (mostly gasket and seal replacements), and I rebuilt the wear ring with JBweld. I didnt like the performance after all these, so I replaced the wear ring and impeller.

If I had to do it again, I will get a used pump instead. For the time and money I put into reconditioning it, I would have been better off with a fairly used pump. I saw one on ebay where the guy was asking for 900 bucks or best offer.

I would definitely make sure that I can get those plugs out and be able to get all the parts out before ordering any parts.

Thank you for sharing your experience, very valuable! Do you happen to have the link for that pump for 900 usd in ebay? I looked for it but can't find.
So you think that with good cleaning and care it is possible that it will do for the summer?
The areas i am taking care are:
- New Gate and rebuilt wear ring (the previous owner was already going this way).
- Alignment and vibrations - will try to be sure there are not too much

The areas that worry me the most are the not visible ones:
- Engine cooling - did you have problems there?
- Rubber seals between hull and pump - do you think they will hold with all that corrosion? Didi you change yours?


I am asking for a revision by my frient that is a boat mechanic, but i am affraid time will fly so if i must order something i must do it now...

Thanks for all the help!!

 

[Double07]

Here is the ebay link: http://cgi.ebay.com/ebaymotors/2000...835780QQ_trksidZp5197Q2em7QQitemZ310327476052

I think with good cleaning and oil change, the pump can be functional.
I would make sure that I can change the oil in the gear case and the stator though.
If the oil in the gear case is contaminated with water, you will need to replace the seals in the gear case (pump will need to come off). If the oil in the stator is contaminated with water, you will need to change the seals and bushing in the stator.

I didnt have cooling issues. I had the pump on the bench, so it was easier to scrape as much of the white deposits as possible and flush with water. If you rebuild the wear ring, you want to make sure that you dont close the holes in the wear ring because the pump pushes water through those holes to the engine for cooling.

The rubber seal between the hull and pump was not affected by corrosion. I did not change mine. However, I replaced all gaskets and o rings in the pump once the pump was out on a table. I bought a pump rebuild kit that had all the pump gaskets and o-rings.

 

[johnhibbs]

I would get that pump on ebay. It does need a new grate though but that's a great deal. I just paid $465 just for the wear ring. From what I can see the impeller and wear ring look good. Looks in very good condition. Maybe never seen salt water.

 

[johnhibbs]

Before you buy that pump on ebay, does the engine run?

 

[johnhibbs]

Don't run the enigne without the shaft in a stator!!!


Maybe take out the whole pump before trying to start the engine.

 

[Wawando]

Great info 007, i will check that pump for sure. WHat holes in the wear ring are you refering to? I see none in this picture:


John, don't worry, the engine works fine, it was tested before disassembly and we will do a water test with new wear ring until the end of this week with everything mounted.

Thanks guys, you are being really helpfull. I will give feedback on the evolution.
Best regards,
Wawa

 

[johnhibbs]

these five holes

 

[Wawando]

Thx, will check that. Are those THE engine refrigeration entries? So tiny for such an important task...

 

[johnhibbs]

Yes, the impeller forces the water through those 5 holes. That is how the engine is cooled. It seems to do a good job of it.

 

[Wawando]

It seems to me that i will be forced to get that pump from US... Being on the other side of the atlantic has a huge cost...

The alluminium is "old" and might not hold the pressure... my mechanic and previous owner are testing (i am abroad)... lets see...

Was your pump _really_ as bad looking as mine? I am loosing hope to have a boat for the summer...:svengo:

 

[johnhibbs]

Just a new wear ring and impeller costs $837 from iboats.net and I don't think they ship Mercury parts out of the USA.

Ebay is the way to go. You might have them take a photo looking into the intake so you can see the impeller and wear ring.

 

[Wawando]

Yeah, that is what i am pointing to. Do you guys have any estimation on weight and size of the pump that is in ebay? An estimation would do. I am getting a crazy idea on going there and bring it back on the plane
Thx!

 

[johnhibbs]

I would just ask them. There is a place on the ebay listing where you can contact the seller and ask a question. My guess is 65 lbs total. My wear ring was 10 lbs. The stator might be 10 lbs. The nozzle and deflector might be 15 lbs. The box part that goes on the boat looks heavey, maybe 30 lbs. I have my pump pulled apart right now but I would guess the overall length is less than 40 inches. It all un-bolts so you can sepearte it into 4 parts. The impeller is on a shaft that is seperate from the rest of the pump hardware. Are they going to include the impeller on ebay?

 

[johnhibbs]

Never mind. I see the impeller. It looks like it has everything.

 

[Wawando]

Yes. It is the only option i see to have a boat for the vacations...
I had already asked but i imagine i might only be answered on Monday.
I was imagining a little more, close to the 90 lbs because of impeller, axels and box... no? Axels are heavy and they are two.

 

[johnhibbs]

Correct. I forgot about that extra stuff.

 

[Wawando]

Just a final question: The ebay jet is a M2 Jet Drive from a seadoo 2000 and i have a Islandia 2001... how can i be sure it will fit?
The 210 and 240 have the same fitting? There is also a variation in models? From what i see in boatsnet 210 and 240 from any year have the same fitting fro jet. Only 250 DFI has changes.
Do you think there are chances it will not fit?
Without compromise from you guys, of course, the risk is always mine!
Thx

 

[johnhibbs]

Go here and check that they both use the same parts: http://www.mercruiserparts.com/selectModels3.asp?type_id=SJET

http://www.mercruiserparts.com/selectModels3.asp?type_id=SJET

 

[johnhibbs]

I would think that if it's a 240EFI M2 with the same year it should all fit.

 

[Wawando]

Ok, test feedback done by my friend that is a experienced boat owner (+20 years, had more than 5 boats, several jets and is a mechanical engineer):
The good news are:
- The boat runned fine in the whole test and nothing broke!!
- Super comfortable and marvelous looking on the water
- It cruises with no stress at 37 (mph)

The not so good news that i would like to have your feedback:
1- It cavitates a bit to get on the plane. Not linear, is this normal is all jet boats that are heavier than jet-skis? Or normally you just hit full throttle with no worries?
2- In tight curves you have to de-accelerate a bit as it cavitates too
3- He got wandering if it planed with 12 passengers...
4- It is very noisy. He says 2h listening to the sound you would get mad. Is it normal?
No wind protection. At speed it feels "cold". This is boat design. Just a comment.

Thanks for all the help!