Blowers

Interesting. Thanks for the links. Maybe I will go with one of those. What is your reasoning to go with one of these vs. the $30 ones?

Doug
 
They are designed to run full time. Some, more experienced members, feel there is a threat to running the others full time, yet we need to run them anytime the genny is on... also, I've read that they are much quieter with less vibration, and last forever. Just my thoughts. You'll spend more time replacing it than $100 will eat up.
 
Depending on how the boat is set up, some blowers are wired into the generator ignition. They come on when ever the generator is running.
 
They are much quieter. Replaced the one for the galley and head exhaust and now all that is audible is the sound of air though the vents.

Best regards,
Frank
 
Continuous duty vs. intermittent duty. Hmmm.

Continuous to me means 24*365 = 8760 hours per year.

I wonder what intermittent means? no more than 30 minutes at a time? 24 hours at a time? Or does it just mean that after 5000 hours it's gonna fail?

Good luck finding out that information regarding a $30 part. I have had trouble finding out this type of information regarding $200,000 equipment used in industrial applications.

If you do get the information regarding the $30 part. . .be assured that the info came from the marketing department and not the engineers designing the equipment.

_ _ _ _ _ _ _ _ _

Frank is right. The protection is the inspection for fuel leaks. Blowers are just a backup incase you miss a leak during your normal inspections for fuel leaks.
 
Once your engines are running, they act as a much more effective blower than your blower. Assuming you have twin 5.7s (you should put that in your signature), each time all 8 cylinders fire on those Mercruisers you move 11.4 liters of air. At 600 RPM idle you are moving 6,840 liters or 241 cubic feet of air per minute. That should move plenty of air in and out of your engine compartment and is exactly what a 4 inch blower moves. Running your engines at idle moves the same volume of air as running a blower except the air goes out the exhaust instead of the blower vent.
 
Although I agree that keeping the fuell system properly maintained in reguards to leaks, Im not sure that I would consider the blowers as "just a backup in case you miss a leak".

Manuals & warning lables stress the importance of running the blowers before start up. I'll take thier advice. As a relatively new boater, its a habbit Im glad Ive devloped. The risks of the problems it may avoid are far too great.

So.... I'll continue to check for leaks, I'll run them when I should & I will be replacing with the higher grade motor.
 
I run the blowers for 4 minutes and I smell the blower exhaust from both sides to check for gas fumes before starting any engine. It's important to check both sides in my boat because each blower extracts air from a different, low point of the bilge under each engine.
 
JuliaValentine said:
Running your engines at idle moves the same volume of air as running a blower except the air goes out the exhaust instead of the blower vent.
Click to expand...

My engines draw air from the top of the ER while the blower draws air from the bottom of the ER. The bottom is where fuel fumes will accumalate. When running (fast), the exhaust vents on the ER also draw air (I hope!) from the bottom of the ER.
 
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