Muffler for my Generator?? - Printable Version +- Wanderlodge Gurus - The Member Funded Wanderlodge Forum (http://www.wanderlodgegurus.com) +-- Forum: Yahoo Groups Archive (/forumdisplay.php?fid=61) +--- Forum: WanderlodgeForum (/forumdisplay.php?fid=63) +--- Thread: Muffler for my Generator?? (/showthread.php?tid=1122) |
Muffler for my Generator?? - Jack & Donna Smith - 07-29-2005 16:04 Ok..Enough..We are all Birders Togather......... I need some basic info on mufflers. Our old 6.5 Onan gave up the ghost, So we had a Emerald 5.5 installed. (still have the 6.5 for electrical parts) Problem is they connected the new Onan to the old muffler. It works, but has a loud "Bark" to it. Not too bad inside the coach, but I am afraid that I may camp next to someone bigger than me!! Now I need a lesson in muffler engeneering. I know a straight thru like a glasspac won't work, for obvious reasons. Will a larger muffler be quieter than a smaller one, other things being equal? In other words, Will one from a (say) 120 cubic inch engine be noiser than one fron a 250" engine. I am sure other factors involved, but I would like the Generator as quiet as possible,,,, Jack Smith 1973 FC 31 In HOT SoCal Muffler for my Generator?? - Dan Weaver - 07-30-2005 00:54 My exhaust experience is on gas engine cars - not diesels. If you have enough room, a straight through muffler, with a second smaller resonator is the quiet yet high flow way to go (on gas engines anyway, I assume a diesel would be the same, but could be wrong). The "bullet" muffler makes a good resonator if you have room for both a muffler and resonator. http://www.dynomax.com/race.stm http://www.a-1performance.com/race_magnum/race_magnum_mufflers.htm is a direct link to mufflers and bullet resonators for sale. http://www.dynomax.com/ may have a muffler of proper dimensions. http://www.a-1performance.com/ has good prices, I prefer the dynomax ultraflow brand (not dynomax turbo or magnaflow). http://www.a-1performance.com/rv/index.htm = RV mufflers http://www.a-1performance.com/diesel.htm = diesel pickups If inlet and outlet sizes are ok (Tom Warner says 4" inlet), then I would select the largest body size available that will fit your application, and have a local exhaust shop put it in place. Dan --- In WanderlodgeForum@yahoogroups.com, "Jack & Donna Smith" > Ok..Enough..We are all Birders Togather......... > I need some basic info on mufflers. Our old 6.5 Onan gave up the > ghost, So we had a Emerald 5.5 installed. > (still have the 6.5 for electrical parts) > Problem is they connected the new Onan to the old muffler. It works, > but has a loud "Bark" to it. Not too bad inside the coach, but I am > afraid that I may camp next to someone bigger than me!! > Now I need a lesson in muffler engeneering. I know a straight thru > like a glasspac won't work, for obvious reasons. Will a larger > muffler be quieter than a smaller one, other things being equal? In > other words, Will one from a (say) 120 cubic inch engine be noiser > than one fron a 250" engine. > I am sure other factors involved, but I would like the Generator as > quiet as possible,,,, > Jack Smith > 1973 FC 31 > In HOT SoCal Muffler for my Generator?? - mrdonut12 - 07-30-2005 01:42 Jack, This may depend on the total length of the exhaust pipe. I had an Emerald 4.0 on my 5th wheel and the exhaust came out of the generator on the curb side and had a straight exhuast pipe with no muffler running the width of the trailer, exiting out from under it on the street side. This made the pipe almost 8 feet long. That thing was whisper quiet. If your total exhaust length is only a few feet, that might be the difference. I can also tell you from working with car exhaust that the further the muffler is from the engine, the better it works. If you have an 8 foot exhuast that's noisy, find a Honda muffler from a small Civic and put it at the end of the pipe. That should make it quiet. George Witt 81 FC 35 Lincoln, Nebraska --- In WanderlodgeForum@yahoogroups.com, "Jack & Donna Smith" > Ok..Enough..We are all Birders Togather......... > I need some basic info on mufflers. Our old 6.5 Onan gave up the > ghost, So we had a Emerald 5.5 installed. > (still have the 6.5 for electrical parts) > Problem is they connected the new Onan to the old muffler. It works, > but has a loud "Bark" to it. Not too bad inside the coach, but I am > afraid that I may camp next to someone bigger than me!! > Now I need a lesson in muffler engeneering. I know a straight thru > like a glasspac won't work, for obvious reasons. Will a larger > muffler be quieter than a smaller one, other things being equal? In > other words, Will one from a (say) 120 cubic inch engine be noiser > than one fron a 250" engine. > I am sure other factors involved, but I would like the Generator as > quiet as possible,,,, > Jack Smith > 1973 FC 31 > In HOT SoCal |