Forespar Marelon - Anti weed inlet

[superheat6k]

After a rather ruined trip out on Saturday, due to a sudden overheat on the port engine, I found the inlet fitting to the Forespar Marelon 1 1/4" inlet seacock completely blocked by a slug of something, which I assume was weed.

Not a droplet was coming through the wide open valve until I shoved a piece of heavy duty cable right through the valve and skin fitting which dislodged the weed or what ever was causing the blockage.

First time I have had a problem since fitting these seacocks in 2016, but I wonder it an anti weed design similar to the inverted half pear bronze fitting is available for Forespar skin fittings.

Fortunately I was only steaming along at 8 knots so the engine only overheated slightly, although it did blow ~ 6 litres of coolant out of the pressure cap vent. I had only checked the engines a few minutes before this happened. Fortunately no lasting damage as the engine did not run dry and the seawater impeller is fine.

I am thinking about a cross connection on the inlets after the strainers, and must get around to fitting the exhaust elbow temperature sensors I bought about a year ago, as these would have picked this up before the engine overheated.

 

[vas]

T,

The trudesign ones I have do offer this as an option, they should have, I mean it's doable...

V

 

[Elessar]

After a rather ruined trip out on Saturday, due to a sudden overheat on the port engine, I found the inlet fitting to the Forespar Marelon 1 1/4" inlet seacock completely blocked by a slug of something, which I assume was weed.

Not a droplet was coming through the wide open valve until I shoved a piece of heavy duty cable right through the valve and skin fitting which dislodged the weed or what ever was causing the blockage.

First time I have had a problem since fitting these seacocks in 2016, but I wonder it an anti weed design similar to the inverted half pear bronze fitting is available for Forespar skin fittings.

Fortunately I was only steaming along at 8 knots so the engine only overheated slightly, although it did blow ~ 6 litres of coolant out of the pressure cap vent. I had only checked the engines a few minutes before this happened. Fortunately no lasting damage as the engine did not run dry and the seawater impeller is fine.

I am thinking about a cross connection on the inlets after the strainers, and must get around to fitting the exhaust elbow temperature sensors I bought about a year ago, as these would have picked this up before the engine overheated.

The grills can block too. If you can poke a wire down like you did, that’s harder with a grill. Usually without a grill there is more chance of the crud ending up in the filter. This is good.

Cross connections or 2 inlets are a good idea IMO. Even if the second inlet is small it allows a slower, controllable temperature rise.