Blower placement for Mercruiser 470

[yamhoss86]

Where should i place the blower vents for the engine.
Currently i have one blower taking out air and one bringing in air.
I have four vents on the top of the engine. Please advise. Thanks.

 

[Boomyal]

Re: Blower placement for Mercruiser 470

Your question doesn't make sense. Sounds like you already have plenty of vents.

 

[yamhoss86]

Re: Blower placement for Mercruiser 470

Maybe i am referencing the wrong way.
Where should i place the intake/exhaust hose? On the top, the side, the bottom?
I have four vents, two that should bring in air and two that should take air out.
The vents are connected to a hose that is going to a part of the engine, i am not sure where to secure that hose.
I hope i am not too ambiguous in my explanation.

 

[Boomyal]

Re: Blower placement for Mercruiser 470

If I read you right, you have 4" hoses that are just dangling. This would be normal. The idea is that the inlet vents face forward and force air into the engine compartment, pressurizing it. The outlet vents should have hoses that terminate near the floor and the bilge. Their vents face rearward. When the boat is in motion the inlet vents force the air out, from the bottom of the engine compartment, up the exhaust hoses. The rear facing vents will help scavenge as the boat moves forward. The bilge blower hose also dangles in the bottom of the engine compartment/bilge. When the boat is at rest, this will draw any settling fumes up from the bottom of the bilge.

 

[Bondo]

Re: Blower placement for Mercruiser 470

If I read you right, you have 4" hoses that are just dangling. This would be normal. The idea is that the inlet vents face forward and force air into the engine compartment, pressurizing it. The outlet vents should have hoses that terminate near the floor and the bilge. Their vents face rearward. When the boat is in motion the inlet vents force the air out, from the bottom of the engine compartment, up the exhaust hoses. The rear facing vents will help scavenge as the boat moves forward. The bilge blower hose also dangles in the bottom of the engine compartment/bilge. When the boat is at rest, this will draw any settling fumes up from the bottom of the bilge.

Ayuh,.... Exactly,.... Gas fumes are Heavier than air, so the exhaustin' tubes run from low in the bilge, to the Outside,...