Hallberg Rassy Rasmus 35

Hallberg Rassy Rasmus 35
An Old Classic

Tuesday, October 16, 2012

Engine Exhaust Problem Located

After getting water in the engine from a back flow of wet exhaust, I found the problem.  My exhaust muffler inlet is two inches higher than the high rise exhaust elbow fitting on the engine.  I made a big mistake.  I relied upon a previous installation as being correct.  Since my exhaust elbow is in the starboard locker out of sight from the engine room, it wasn't so easy to spot.  That's my excuse anyway!  So, as long as the engine starts quickly you don't see a problem.  But as soon as a hard starting situation appears, the hose between the exhaust elbow and muffler quickly fills up with water, as the engine doesn't produce the exhaust pressure necessary to push the wet exhaust water up and over to the muffler.  The problem is I don't have the space to lower the muffler or enough space to raise the elbow to get the recommended 9 inches of drop from the exhaust elbow to the muffler.  Hmmm.  I can custom make an extension to my exhaust elbow to raise it above the muffler at a maximum height of maybe 4 inches above the muffler inlet.  That puts the top of the exhaust elbow at the very top of my engine room ceiling.  But it still doesn't meet the recommended 9 inch drop.  What to do.  Any suggestions are welcome.


DaveD said...

Pat - just saw your new post. My old muffler was in the stbd locker but I tore it out. My Vetus LSS waterlock is in the engine room. Take a look at my photo in my post of a couple of weeks ago.

A 2 gallon waterlock should hold all of the water that is normally in the exhaust with lots to spare.. I computed the volume ( for my D1-30F engine) at the time I did the install and will hunt it up and post.


Rafayel Taylor@Brakes said...

If you are still not able to solve the issue then you you can contact a required mechanic who can help you.