I don't know what kind of mufflers you have, but mine clearly had an upstream/downstream end. Mine were supposed to be installed with the upstream end having a higher water passage than the downstream end to prevent seawater backing up through the muffler, sort of a second riser inside the muffler. Tony Athens at Seaboard Marine in San Diego has some excellent online articles on marine exhaust systems on the Seaboard website. 'Tony's Tips'.
John --- On Sun, 8/30/09, dukedog <[email protected]> wrote: From: dukedog <[email protected]> Subject: [UnifliteWorld] mufflers To: "UnifliteWorld" <[email protected]> Date: Sunday, August 30, 2009, 8:46 AM There we go, too many passwords in my head you know! I have a 1971-31 ft. express cruiser undergoing a major right now. I am having some issues with small amounts of cooling water getting into the exhaust side of a brand new full set of manifolds, elbows and risers. When I removed the mufflers I did not take notice of which end was which. It seems that there could be an issue with cooling water backing up over the riser as the interior of the mufflers at one end has six flukes in a row, and the other end also has six flukes but are configured with three in a row on each side and turned 90 degrees from the six in a row. Does anyone know if the mufflers need to be turned around or does it not matter? Anyways, it's great to be back on the page. I have learned much about these boats and hope to share with others when I can. As well, I hope to continue learning from many of you. Thanks again Dukedog --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en -~----------~----~----~----~------~----~------~--~---
