Mercruiser aluminum exhaust manifolds

[Susan115]

I have a 2006 Formula with 496 Magnum Mercruiser engine I purchased new. Last fall my mechanic informed me that I had aluminum exhaust manifolds which, if left untended, would destroy the motor. It has come to my attention that Mercruiser was aware of the inherent flaws in using aluminum but did not issue a recall. So I am facing a $3-4000 repair before spring launch or risk replacing the entire engine.
Has anyone dealt with Mercury on this issue? Any results? Any advice?
Thanks

 

[boobie]

Re: Mercruiser aluminum exhaust manifolds

If it was my motor I'd be calling Mercury customer service. I used to deal with OMC and if they had a known defect they would give you a break on parts or else parts and no labor.

 

[tpenfield]

Re: Mercruiser aluminum exhaust manifolds

I have a 2006 Formula with 496 Magnum Mercruiser engine I purchased new. Last fall my mechanic informed me that I had aluminum exhaust manifolds which, if left untended, would destroy the motor. It has come to my attention that Mercruiser was aware of the inherent flaws in using aluminum but did not issue a recall. So I am facing a $3-4000 repair before spring launch or risk replacing the entire engine.
Has anyone dealt with Mercury on this issue? Any results? Any advice?
Thanks

Mercruiser still sells the aluminum manifolds, but they are for fresh water use. I would think that you could get a new set of manifolds for a lot less than $3-$4K. More like under $2K installed. So, maybe take that up with the mechanic, or shop around.

In addition to Mercruiser, you could contact Formula to see what their take is on the use of aluminum manifolds as it pertaints to your boat (be sure to give them the HIN # when you contact them).

Manifolds (any type) should be inspected internally about every 5 years, so perhaps your mechanic did the internal inspection? If not, then an inspection could determine if you have an issue or not. If you get to 10 years with them, then probably time to replace regardless.

 

[Chris1956]

Re: Mercruiser aluminum exhaust manifolds

This should be moived to the Mercruiser forum. Aftermarket cast iron manifolds and risers are avail for under $1k.

 

[Struc]

Re: Mercruiser aluminum exhaust manifolds

This should be moived to the Mercruiser forum. Aftermarket cast iron manifolds and risers are avail for under $1k.

Heck... They are available for under $500 from some of the China based brands. Really just depends on what you want to spend.

 

[TilliamWe]

Re: Mercruiser aluminum exhaust manifolds

... 496 Magnum Mercruiser engine I purchased new...

At that time, all Mercruisers with the 496 had CLOSED cooling, which included those manifolds. So you had better check real close what cooling system you have there Susan. Cause if they are included in the closed cooling, they have anti-freeze in them, and shouldn't corrode.

 

[Bondo]

Re: Mercruiser aluminum exhaust manifolds

I have a 2006 Formula with 496 Magnum Mercruiser engine I purchased new. Last fall my mechanic informed me that I had aluminum exhaust manifolds which, if left untended, would destroy the motor. It has come to my attention that Mercruiser was aware of the inherent flaws in using aluminum but did not issue a recall. So I am facing a $3-4000 repair before spring launch or risk replacing the entire engine.
Has anyone dealt with Mercury on this issue? Any results? Any advice?
Thanks

Ayuh,.... Welcome Aboard Susan,....

With all the questions brought of by the fella's, especially Tilliam's,...
It sounds like yer Mechanic is 'bout to take ya for an expensive ride....
Possibly, an unnecessary ride at that...

 

[Susan115]

Re: Mercruiser aluminum exhaust manifolds

Ayuh,.... Welcome Aboard Susan,....

With all the questions brought of by the fella's, especially Tilliam's,...
It sounds like yer Mechanic is 'bout to take ya for an expensive ride....
Possibly, an unnecessary ride at that...

very helpful info... not too knowledgable in the motor department, but I will def take all the advice before I shell out my hard-earned money.... (and fyi... I checked this with my mechanic and an outside company... both quotes were very high... maybe it's a New York thing?)

 

[Susan115]

Re: Mercruiser aluminum exhaust manifolds

This should be moived to the Mercruiser forum. Aftermarket cast iron manifolds and risers are avail for under $1k.

sorry, new here... still manuevering through the channel

 

[mxcobra]

Re: Mercruiser aluminum exhaust manifolds

cheep maniflods here
http://www.amarket.com/sbm4set.htm

 

[Struc]

Re: Mercruiser aluminum exhaust manifolds

cheep maniflods here
http://www.amarket.com/sbm4set.htm

Actually, that link is for small block manifolds.
From that same place, here is the correct link: http://www.amarket.com/bbm4set.htm