Cooling question 5.0l Bravo 3

[sessasells]

I cannot locate a resevoir or fill valve anywhere in the cooling system or heat exchangers, what am I missing? Frustrated!

 

[Don S]

Re: Cooling question 5.0l Bravo 3

I cannot locate a resevoir or fill valve anywhere in the cooling system or heat exchangers, what am I missing? Frustrated!

Are you sure you have a heat exchanger and cooling system? Pictures would help.

Serial number, year?

 

[sessasells]

Re: Cooling question 5.0l Bravo 3

Are you sure you have a heat exchanger and cooling system? Pictures would help.

Serial number, year?

2005 Mercruiser OW344212 It appears to have a heat exchanger over each exhaust manifold, but thought there should be a cap or separate reservoir to maintain coolant level

 

[Don S]

Re: Cooling question 5.0l Bravo 3

2005 Mercruiser OW344212 It appears to have a heat exchanger over each exhaust manifold, but thought there should be a cap or separate reservoir to maintain coolant level

Post a picture. Not sure what your looking at.

 

[sessasells]

Re: Cooling question 5.0l Bravo 3

Where do I check coolant or add if I decide to replace thermostat? See pics attached.

 

[Bt Doctur]

Re: Cooling question 5.0l Bravo 3

Dont see a heat exchanger anywhere,looks like it a raw water cooled motor

 

[MarkSee]

Re: Cooling question 5.0l Bravo 3

2005 Mercruiser OW344212 It appears to have a heat exchanger over each exhaust manifold, but thought there should be a cap or separate reservoir to maintain coolant level

As the others have indicated, you have a raw water cooled motor, no heat exchanger and what it appears you are seeing on top of the starboard exhaust manifold is actually the exhaust riser; port side I can't tell.

You might want to take a look through this service manual to get acquainted with your setup.
Boatinfo - Mercruiser Service Manual nr. 31 - 2001-Up - 5.0L (305), 5.7L (350), and 6.2L (377) Engines

Mark

 

[Don S]

Re: Cooling question 5.0l Bravo 3

While it is a raw water cooled engine, what you have added to it I have no idea. Looks like some kind of aftermarket flush system of some sort.

 

[sessasells]

Re: Cooling question 5.0l Bravo 3

thanks