Someone also hacked the
exhaust (surprise surprise). The
water injection
elbow crumbled and looking at replacing it I realized there was a loop (in the 2" wet
exhaust hose) between the
water injection exhaust
elbow and
lift muffler. This seems to violate the 1/2" per foot slope
rule (I just learned about), so just how bad is this?
I replaced the
muffler with a 'side in top out' type which gives a perfect run from the water injection elbow to the muffler, so I am happy about that, but now I am looking at the other features of the exhaust.
I think the only really fishy thing to my eye, is the lack of siphon break in the
raw water intake hose. However, the injection elbow is above the water line and the muffler is below. I have been told this is OK to not have a siphon break in this case since my injection elbow is well above waterline. Is this sound?
There is a gooseneck in the out exhaust, which comes out at least 13" above the water line. No flappers however. How important are flappers? I have a good long even sloped run up to the gooseneck from the stern.