FWC cranking question

[Marty Levenson]

Hope this isn't a dumb question!

Since converting to FWC I have been wondering about the best procedure if startup needs extra cranking. With RWC I understand the need to shut off the water intake if she doesn't fire up after a few tries, but doing that isn't going to affect water getting into the engine with FWC.

I have the Indigo system: electric coolant/fresh water pump and A4 water pump to circulate sea water.

Thanks!
Marty

[JOHN COOKSON]

Raw water can back up into the exhaust part of the manifold and into the engine when there is no exhaust pressure to force it out of the exhaust system.

TRUE GRIT

[lat 64]

Marty,

The exception to that is only if you have a dry water-jacketed exhaust all the way back to the through-hull.
Take a long look at your system and suss out the paths of the water and exhaust. Get familiar with just exactly where the sea water gets injected to cool off the exhaust in the exhaust pipe.
Short of that, when in doubt; use the standard procedure to crank engine. That is, if it does NOT fire right away, close seacock and get it started, then IMEDIATELY open seacock for engine heat exchanger and exhaust mix water.

[romantic comedy]

I see you have a T 27. I have a T 34 with a stand pipe. If you do too, then you can crank away with no fear of water in the engine.

As always, pictures of the exhaust will help

[ndutton]

As described by RC and Lat64, the answer to your question is dependent on the type of exhaust system.

[joe_db]

FYI:
FWC vs. RWC makes no difference at all to exhaust flooding unless you have a dry exhaust. I am in the middle of switching and the salt water dumps in the exhaust at the same rate and the same place as before.