Mufflers or Turn Downs
07-07-2008, 05:22 PM
#11
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I am leaning towards the turn down tips but concerned while sitting at the dock or at the beach, can water from waves or boat traffic surge up the tips and into the motors?
07-17-2008, 12:04 AM
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kooool
Here is how I "solved" that problem. The exhaust pipes are 4-5" under water @ idle, thus killing most of the "noise" and all 4 are between the drives and pointing downward , sending the exhaust rearward, not out to the side. I have not done a db test on this system, but I know it is a lot quieter than when I had Gaffrig air-mufflers, with built in turndowns, that leaked ex. around the butterfly's. The motors are 572" PSI supercharged, 1100hp. Hope this helps.
07-17-2008, 07:33 AM
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07-17-2008, 07:35 AM
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ggb mufflers
I had ggb's on my last boat they worked great. no rpm loss Talked to him last week hes not building boat mufflers right now (wouldnt say why ) only for atv's, did say next year would be back in boat mufflers business .
wellcrafted
wellcrafted
07-17-2008, 07:38 AM
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Maybe the testing did not go well. May have to look to the Zoomers
07-17-2008, 07:44 AM
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Reply to 1CE. I tried inward only once, several years ago. It did not seem to make any difference, but the handling around the docks was a struggle. I'm planning on switching the drives in a week, to turn the props inward, to give it another shot. I will report back as to what my findings are.
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damdonzi
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