Just got a noise ticket tonight - need options
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Just got a noise ticket tonight - need options
Having fun idling up the river in Milwaukee waiting for the fireworks show and I unexpectedly find out the DNR wasn't entertained by my exhaust. Apparently 95DB at idle is too much. Admittedly, the cam change, head work and fatter tune definitely made it louder. What ever dick head just give me my ticket and let me go back to having fun. So, now that I know the rules 86DB's, I need to make some modifications. Since i like loud and personally 95 DB is kinda weak, i'm considering going dry with some type of switchable muffler. If i'm going to do this I might as well do it right. What is everyone using?
I currently have Stainless Marine Exhaust that I was planning on extending the riser to couple directly to a dry tip. Unfortunately, I haven't seen a dry tip yet. I would think these would still be water jacketed with a water dump right? Not trying heat the crap of my transom. A switchable / muffler tip (for dry exhaust) would be IMO the best option. Does this exist?
I comfortable making everything (rather not) except the muffler. I need confidence that a muffler will be quiet enough to get me through this crap without water flowing through it.
Signed - pissed off
I currently have Stainless Marine Exhaust that I was planning on extending the riser to couple directly to a dry tip. Unfortunately, I haven't seen a dry tip yet. I would think these would still be water jacketed with a water dump right? Not trying heat the crap of my transom. A switchable / muffler tip (for dry exhaust) would be IMO the best option. Does this exist?
I comfortable making everything (rather not) except the muffler. I need confidence that a muffler will be quiet enough to get me through this crap without water flowing through it.
Signed - pissed off
Last edited by abmotorman; 07-04-2014 at 02:49 AM.
#2
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I doubt you are actually at 95db and the test was most likely not done corectly.
Switchable mufflers added to dry exhaust will not make them quiet enough to pass a db test.
Dry exhaust does not go to a "Dry Tip" The riser/tailpipe is water jacketed and extends all the way through the transom.
BTW, 86 db will be hard to get to even with wet thru hull exhaust
Switchable mufflers added to dry exhaust will not make them quiet enough to pass a db test.
Dry exhaust does not go to a "Dry Tip" The riser/tailpipe is water jacketed and extends all the way through the transom.
BTW, 86 db will be hard to get to even with wet thru hull exhaust
Last edited by Griff; 07-04-2014 at 12:11 PM.
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I doubt you are actually at 95db and the test was most likely not done corectly.
Switchable mufflers added to dry exhaust will not make them quiet enough to pass a db test.
Dry exhaust does not go to a "Dry Tip" The riser/tailpipe is water jacketed and extends all the way through the transom.
BTW, 86 db will be hard to get to even with wet thru hull exhaust
Switchable mufflers added to dry exhaust will not make them quiet enough to pass a db test.
Dry exhaust does not go to a "Dry Tip" The riser/tailpipe is water jacketed and extends all the way through the transom.
BTW, 86 db will be hard to get to even with wet thru hull exhaust
Are you saying you haven't seen an effective, muffler (preferably switchable) for dry exhaust? Someone has to make something??? I see some running turndown's that discharge below the waterline while not on plane. Still see them giving me crap about that.
http://dnr.wi.gov/files/pdf/pubs/le/le0301.pdf
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the turndowns will do the trick. you can try a half-ass version. clamp merc thru-prop elbows on ends of exhausts if tips are within 8 inches or so of water at idle.
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Checked the DNR web site and sure enough 86 DB (see pg. 12) they probably set it that low to increase revenue. I actually believe the readings. I say readings because he followed me about 2 miles with a sound gun. Once we tied up in a nice open spot he pulled out the tape measure and separate meter with a fancy dancy mic on it and proceeded to document the whole experience on video. yep i'm screwed.
Are you saying you haven't seen an effective, muffler (preferably switchable) for dry exhaust? Someone has to make something??? I see some running turndown's that discharge below the waterline while not on plane. Still see them giving me crap about that.
http://dnr.wi.gov/files/pdf/pubs/le/le0301.pdf
Are you saying you haven't seen an effective, muffler (preferably switchable) for dry exhaust? Someone has to make something??? I see some running turndown's that discharge below the waterline while not on plane. Still see them giving me crap about that.
http://dnr.wi.gov/files/pdf/pubs/le/le0301.pdf
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Checked the DNR web site and sure enough 86 DB (see pg. 12) they probably set it that low to increase revenue. I actually believe the readings. I say readings because he followed me about 2 miles with a sound gun. Once we tied up in a nice open spot he pulled out the tape measure and separate meter with a fancy dancy mic on it and proceeded to document the whole experience on video. yep i'm screwed.
Are you saying you haven't seen an effective, muffler (preferably switchable) for dry exhaust? Someone has to make something??? I see some running turndown's that discharge below the waterline while not on plane. Still see them giving me crap about that.
http://dnr.wi.gov/files/pdf/pubs/le/le0301.pdf
Are you saying you haven't seen an effective, muffler (preferably switchable) for dry exhaust? Someone has to make something??? I see some running turndown's that discharge below the waterline while not on plane. Still see them giving me crap about that.
http://dnr.wi.gov/files/pdf/pubs/le/le0301.pdf
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Anybody have experience with either of these systems? To me the electronic would be easier and lighter. Pneumatic maybe prone to long term corrosion concerns???
http://teaguecustommarine.com/em0011...er-system.html
http://www.cpperformance.com/p-12615...encer-kit.aspx
Wonder how much reduction in sound on a dry setup?
http://marineexhaust.ggb.ca/4-inch-i...ong-sport-pair
http://teaguecustommarine.com/em0011...er-system.html
http://www.cpperformance.com/p-12615...encer-kit.aspx
Wonder how much reduction in sound on a dry setup?
http://marineexhaust.ggb.ca/4-inch-i...ong-sport-pair
Last edited by abmotorman; 07-04-2014 at 11:53 PM.
#9
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Having fun idling up the river in Milwaukee waiting for the fireworks show and I unexpectedly find out the DNR wasn't entertained by my exhaust. Apparently 95DB at idle is too much. Admittedly, the cam change, head work and fatter tune definitely made it louder. What ever dick head just give me my ticket and let me go back to having fun. So, now that I know the rules 86DB's, I need to make some modifications. Since i like loud and personally 95 DB is kinda weak, i'm considering going dry with some type of switchable muffler. If i'm going to do this I might as well do it right. What is everyone using?
I currently have Stainless Marine Exhaust that I was planning on extending the riser to couple directly to a dry tip. Unfortunately, I haven't seen a dry tip yet. I would think these would still be water jacketed with a water dump right? Not trying heat the crap of my transom. A switchable / muffler tip (for dry exhaust) would be IMO the best option. Does this exist?
I comfortable making everything (rather not) except the muffler. I need confidence that a muffler will be quiet enough to get me through this crap without water flowing through it.
Signed - pissed off
I currently have Stainless Marine Exhaust that I was planning on extending the riser to couple directly to a dry tip. Unfortunately, I haven't seen a dry tip yet. I would think these would still be water jacketed with a water dump right? Not trying heat the crap of my transom. A switchable / muffler tip (for dry exhaust) would be IMO the best option. Does this exist?
I comfortable making everything (rather not) except the muffler. I need confidence that a muffler will be quiet enough to get me through this crap without water flowing through it.
Signed - pissed off
It happens
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on my formula with silent thunder ''wet'' swim platform, on twin 485 HP, my db reading was 91-92, at idle, 3 feet behind and 3 feet high.
I don't see any boat being able to be under that without turn down !
I don't see any boat being able to be under that without turn down !