To fresh water cool or raw water cool???

[tazrig]

Re: To fresh water cool or raw water cool???

Yes but you need to indentify a silver or gold plan...Its all in the detail's and will shed light on money and peace of mind. I do this everyday....details....perception...money.... all determine the value. To many times one assume's one thing and its completely different than what they thought.

You do know that part of that Extended Agreement To Provide Service also includes that a inspection of the install and probably the install need's to be done by Mecury Marine which mean's the company itself and not a certified dealers. It is more than possible that those engines were not or better said the boat was not engineered to run those engine's...Its critical to get Mecury Marine to sign off. They state so in black and white....

There lauguage is very spefic for a reason....No tinkering allowed.....

I didn't buy the extra warranty. It came with the purchase. It is just a 2 year extension of the basic 1 yr. warranty that comes with all their non racing motors. I'm not quite clear on what you are trying to say. Are you saying that if i have a non merc FWC system put in by the merc dealer that they would void the entire warranty?

 

[Tail_Gunner]

Re: To fresh water cool or raw water cool???

I didn't buy the extra warranty. It came with the purchase. It is just a 2 year extension of the basic 1 yr. warranty that comes with all their non racing motors. I'm not quite clear on what you are trying to say. Are you saying that if i have a non merc FWC system put in by the merc dealer that they would void the entire warranty?

You need to ask merc that question. Who's doing the install....are they going to do it by the book aka the diagram merc provide's and are you going to have merc inpsect the work when done. I know this sounds trival but merc spell's it our in black and white read that warranty close. So for now what you know is you have a engine enternal warrantry only for three yrs. And due to the disclaimer's in the warranty... it is a highly restrictive warranty of what value???

Look at the pdf install if not done to those dimension's the wording in the contract void's the warranty. Will those engine's fit into the boat just a illustrated and the proper dimension's.

Here what i am eluding to is modern engine's do not fail due to mfg tech. Can they yes but your more likely to win the lottery. I can see you going thru all kinds of hoops and find out in the end there is no warranty. Who is doing the install and will merc certify there work.

 

[tazrig]

Re: To fresh water cool or raw water cool???

You need to ask merc that question. Who's doing the install....are they going to do it by the book aka the diagram merc provide's and are you going to have merc inpsect the work when done. I know this sounds trival but merc spell's it our in black and white read that warranty close. So for now what you know is you have a engine enternal warrantry only for three yrs. And due to the disclaimer's in the warranty... it is a highly restrictive warranty of what value???

Look at the pdf install if not done to those dimension's the wording in the contract void's the warranty. Will those engine's fit into the boat just a illustrated and the proper dimension's.

Here what i am eluding to is modern engine's do not fail due to mfg tech. Can they yes but your more likely to win the lottery. I can see you going thru all kinds of hoops and find out in the end there is no warranty. Who is doing the install and will merc certify there work.

I'm having a local Merc certified dealer do the instal. The same place everything was bought from. The last thing I want is different vendors pointing fingers at each other. This way if there is a problem there is only one place to go.

 

[dan t.]

Re: To fresh water cool or raw water cool???

Dan I only know what Merc corporate and every other FWC manufacturer tells me, that these engines in particular have to have the raw water pump because the gen 2 drives won't handle it on their own. I checked out San Juan Engineering but they don't make a "full system" for the new mercs with the 555 ECM becuase merc won't share the technology with them. Specifically what type of FWC full system do you have that runs on just the leg and what year are your engines. Are they fuel injected? Thanks for the help.

1992 Merc 350 magnum,Merc full closed cooling system, carbed but cant see what difference that would make, the engine before this was a 305 with a San Juan full closed system, both cooled from the pump in the leg.

 

[Tail_Gunner]

Re: To fresh water cool or raw water cool???

I'm having a local Merc certified dealer do the instal. The same place everything was bought from. The last thing I want is different vendors pointing fingers at each other. This way if there is a problem there is only one place to go.

Agreed best intention's great result's. Present the pdf install file to the installer along with the warranty stipulation of post inspection requirement.Listen to his answer closely then follow up with merc and verify it. Why all the fuss ive seen one engine failure in (new) in 5 yrs however everyday i see warranty issue's..everyday.

Why the merc only cooling system..behind the scene's the conversation would go... merc is in the business of supporting merc end of story...just as ford does chevy does any large mfg does its good business

 

[tazrig]

Re: To fresh water cool or raw water cool???

1992 Merc 350 magnum,Merc full closed cooling system, carbed but cant see what difference that would make, the engine before this was a 305 with a San Juan full closed system, both cooled from the pump in the leg.

Dan, the difference is in the fuel injection. It is computer controlled and the carb isn't. The engines I'm replacing are carb engines and unfortunately the new ones are floating computers. I spoke with a few more merc certified mechanics today and they explained to me that the leg pump will produce enough water to cool the engine with FWC. Barely, but enough. Thats why when you're under a good load the temp goes up to 180 when the engine has a 160 thermostat. With a carb model thats fine. With the computer and the fuel injection the computer starts to mess with the fuel injection when the engine runs a little hotter than factory spec. and then the engine doesn't run as efficiently as it should. To counter this they add a bigger water pump to compensate and make sure the engine stays at 160 which is what the computer is looking to find. Basically they are just adding a Bravo pump to an alpha system. The impeller is bigger and has more splines to it. Since it won't fit into the alpha drive they mount it to the engine. I also found out today that the new motors have some type of ceramic coating on the inside of the manifolds and the elbows which greatly reduces rust. So, after all the input from this forum, Mercruiser both local and corporate, my mechanic, various FWC venders and my own research I think I've decided to pass on the FWC for my motors and just to flush after each use. I just can't justify the $2K per motor cost of the FWC. I know there is value to having FWC I just don't see $2K worth of value in my case. Thanks for all your input and thanks to everybody that contributed to this thread for all your insight. It's much appreciated!