International Owners

[fourreins]

I have a 1989 10.8 meter and have a question about the original set up for the bilge blowers. I have been told that I should have some flange mounted blowers in the engine compartment in the corners near the side vents. I have looked several times and don't see any. It appears that I just have one inline blower which is pulling fumes out from behind the gen which I believe is the lowest point in the engine compartment. I do have several hoses coming from the vents that appear to introduce fresh air to the compartment. What was the original set up? Anyone have a pic? Thanks!

[RWS]

'83 ten meter express -

the factory blower was attached to a flange at the base of the opening for the stainless steel art deco style grille.

Not to be confused with the horizontal, plastic air intake grilles on the sides of the boat.

As I recall, ( don't quote this) it was on the port side.

A flexible hose went from the blower to just below the genny, the lowest part of the ER.

There was (again I'm fuzzy on this) one or possibly two vent holes at the bottom of the ER bulkhead to evacuate fumes from the fuel tank area as well.

A fresh air duct led down to the same space from the other side so that the vacuumed air going to the blower would then be replaced with FRESH AIR from outside the boat.

When I repowered, I left the blower in, but removed all the hoses.

The blower in my diesel powered boat can now take out the hottest air from the top of the ER.

Hope this helps

RWS

[P-Dogg]

RWS can get away without those hoses, but unless you're running diesel too, you can't.

From http://www.uscgboating.org/regulations/ ... partc.aspx

The regulation requires that the exhaust blower duct opening be located in the lower one-third of the compartment. Refer to 183.630(b).

Be sure to click "next" at the bottom of the page, as the information continues for a couple of pages.

[fourreins]

I do have the one line which pulls the vapors from the lowest point of ER....this is the line with the inline blower. The inline blower was actually installed backwards upon investigation. The blower was introducing air to the compartment instead of removing. I have turned the inline blower around which is now sucking the air out. I assume all the other lines coming from the stainless steel vents are used to introduce air to the ER. I guess when the engines are running they would almost create a suction into the ER??? I'm also assuming someone replaced the flange blower at some point with a inline. Possibly the flange blower had quit and this was a less expensive way to replace it.

[RWS]

The flange blower in mine was set up to run in the SUCTION mode.

Therefore all other sources would provide FRESH AIR replacing what was removed from the LOWEST point in the ER.

The difficulty with the 10 Meter is accessibility to the factory blower.

It can be done, (I did it) but you may get numerous boat bites in the process.

RWS

[fourreins]

If the flange blower was still there would I be able to see it hanging in the corner or were they buried?

[RWS]

It is between the engine and the gunnel, at the top.

Keep in mind the information I am supplying is based on my 1983 10 meter Express Cruiser.

If yours is mid cabin based, everything may be different.

RWS

[Seafun]

RWS
I just installed Two new 12 Volts, 250 CFM Blowers on my engine room. I opted for the powerful Flange type blowers and installed it by drilling a hole on the respective side of the AFT Engine bulkhead. ( Top port and top Starb)
The exhaust hoses were connected on the Lazarette side (the other side...) attached to their respective blower.
The blowers are located inside RE and are strickly Exhaust Blowers to extract Hot air from the engine Room, after engine shutdown or while Genne is running.

Question?
Where should I connect the Exhaust END of the hose?

Should it be attached to the stainless Steel art Deco Grill Holes ?
OR
Should It be attach to a frange under the grille, leaving the Grille holes UNOBSTRUCTED ??...

Note: the Port side the grille only has 1 ( one) hole AND the Stbd side has 2 holes??? Any Idea Why?

Second Question!

On my 10 Meter, the original Engine Air ventilation SCOOPS were eliminated and the hoses disconnected...
.After reading the thead above,I have found the original holes on the gunnel, where the hoses used to be connected.

I am concern about Insuficient Air intake on my Engine Room to meet the High demand of my Yanmar Turbo Diesel Engines, since the Factory Air Scoops were eliminated.

HOW ARE my engines breathing??? Pure Suction feed.

RWS!
Any Ideas about how ventilate the Engine room more efficiently , considering the fact the original Air scoop's potential for water intrusion??
Should I reconnect the Air Scoops to ventilate the ER ? Is there any other choice to increase fresh ventilation when the Engines are running?

Thank you in advance for your insightful ideas!

Captain Morgan

[RWS]

First off, I suggest that you determine if there is a NEED for more air - is there enough CFM available at WOT?

Here's my suggestion.

Get up to WOT and note your RPM/EGT & boost.

Have someone lift the engine room hatch after you record your numbers, and see if they change.

THAT will tell you if there is sufficient CFM available.

Quite frankly, I don't have a problem with ER ambient heat.

If I take a run to an anchorage, shut down the engines and run the genny, the generator sucks a great deal of CFM air out of the ER.

The only time I use the blower (and I have only one) is if I have to do something in the ER and want to evacuate hot air.

I have eliminated all of the duct hose (not needed with the diesel) so the blower now evacuates the hot air from the top of the ER.

Hope this helps.

RWS