Offshoreonly.com - Mufflers or Turn Downs

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Mufflers or Turn Downs (https://www.offshoreonly.com/forums/general-q/190290-mufflers-turn-downs.html)

NEVERSATISFIED

07-07-2008 05:22 PM

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?

NEVERSATISFIED

07-08-2008 03:08 PM

What mufflers are most used and how many DB. sound reduction can I expect along with horsepower loss?

NEVERSATISFIED

07-14-2008 08:33 PM

What mufflers work with 600 hp. and how many db. sound reduction could I expect?

NEVERSATISFIED

07-16-2008 01:12 PM

Does anyone have a contact number for GGB?
Thanks Steve

1CE	07-17-2008 12:04 AM

kooool

Quote:

Originally Posted by RMPRam (Post 2614355)

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.

nice exhaust set up/ever try spinning those wheels inward/?

Nordicflame

07-17-2008 07:33 AM

Quote:

Originally Posted by NEVERSATISFIED (Post 2625516)

Does anyone have a contact number for GGB?
Thanks Steve

888-898-9902 / ask for Gram
They are currently testing there new release!

wellcrafted

07-17-2008 07:35 AM

ggb mufflers

Quote:

Originally Posted by NEVERSATISFIED (Post 2625516)

Does anyone have a contact number for GGB?
Thanks Steve

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

Nordicflame

07-17-2008 07:38 AM

Quote:

Originally Posted by wellcrafted (Post 2626325)

Interesting.. I talked with Gram last week as well and he said Fall release???

Maybe the testing did not go well. May have to look to the Zoomers :(

RMPRam

07-17-2008 07:44 AM

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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