I've got a 1975 Northern 29

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Posted by peter ( on June 29, 2004 at 00:10:01:

In Reply to: venting engine compartment posted by Peter on 21:03:42 06/23/04:

I've got the same problem after running the engine for a long time. (had the boat for 30 years) The original muffler was a dry exhaust, and after years I did find some corroded fittings so I thought that might be the source of the smell.
I changed the entire exhaust system to a Vernay waterlift (waterlift beside the batteries, if you have a N29 you'll know where that is.) The exhaust now runs under the table area floor to the waterlift by the batteries, then behind the stove up to a check valve, then slightly sloping downhill all the way to the transom (original). It's a long way, and there are some tight corners, but as far as I can tell, the whole system is leak free... and it still smells like there is an exhaust leak in the cabin.

I've often wondered if the PCV valve kit would solve the problem, but to me it smells more like exhaust than oil... although it seems to be the only thing I can think of that hasn't been tryed yet.

I've often thought about adding extra ventilation too. When I motor for a solid 12 hours, I take the cover off the seat to help cool and vent the engine. The cusions get hot otherwise.

If anyone with a Northern 29 has more comments I sure would like to hear them. It's a good old solid boat. but the exhaust smell has always been an issue when cruising.

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