Cig Top Gun Noise reduction?
 

Hi guys,

The top gun was taken out the first time in australia today. It was unbelievable fun. The water was about 4-5 ft chop and the hull just carved through it.

The unique paint job had everybody staring at it.

As you guys know i've had a million dramas with bringing it in and today I discovered a new one.

The engines were absolutely roaring...and I have been warned by a tonne of people especially at the marina that water police will pull my boat off the water for noise pollution.

Infact my dads been in boat building for 40 years building 100mph jet boats and he went to the pier to see it and said he'd never heard a boat as loud in his life and said the cops will get it.

What do you do to make them quieter? I've seen pics of cigs with mufflers on the exhausts.

Where do you get them? How do they cost? How much will the noise be reduced? Are they hard to install? Will I loose much power?

Thanks fellas and thanks again

Buy the turn on exhaust tips, donkey dongs. A few of the OSO sponcers sell them.

Thanks Magic,

Any more advise from top gun owners would also be appreciated.

Also, more info donkey dongs etc would be great.

Gibson sells those turn down pipes that divert the exhaust down into the water when you're idling (in the harbor) then are unrestricted when you're up on plane.

Hi Tank,

Are those the pipes that actually go down to the water line? I hope not because the look shocking. how do you go in California with your exhausts? Arent the laws for noise pretty harsh there?

HPI makes a nice muffler for your boat. Don,t put those ugly donkey dong things on unless you have to.

Gibson Bullets

Yea, they go down into the water line when the boat is still or at idle. Once on plane they are out of the water. virtually silent until out of water, then it's normal.

I have the capt call exhaust on our cig. but I never use it. They dont sweat us up here. Down in Newport they're pretty strict but it's still not as bad as it sounds out there.

so which would work better, HPI, Gibson bullets, or Capt call?

or any others?

What Tank said... Custom built by CMI from Trick Marine

I have them on my Tiger...

http://limestonedev.com/images/boat/000Cig1.jpg

Priceb,
I have two sets of 4.5" Gibson turndowns that I just took off of my Top Gun I'll sell you if they will work for you. Nothing is wrong with them, I ran them on my boat for about 15 hours. The police don't bother us about the noise around here and my wife didn't like them. I try to keep her happy!:D:ernaehrung004::D

If you are interested, email me. I will be leaving for Florida this morning and won't have OSO access for a week. I will have my blackberry with me.


Craig

Thanks for the offer Craig, I might just do that but would like to try to find something that works all of the time not just at idle. If I can't find anything then they will do, but I do appreciate your help.

What about Livorsi mufflers? A buddy recommended them.

Also, what are the bullet mufflers?

Ps GLH...nice boat!

sorry to post again, but i've been reading posts on gibson bullet mufflers.

they apparently work well and don't look to bad.

anyone have them on top guns? Do they work?

how much would they cost?

Hey GLH,

How come you went with those turn downs instead of Bullett exhausts?

Made more sense to me engineering wise. There are no restriction at all, the boat is also quieter at speed with everything directed downwards instead of straight out.

I have 5" pipes also not much is available off the shelf.

Thank You for the compliments on the boat!

G.L.


http://www.limestonedev.com/images/boat/000Cig2.jpg

GLH, how much noise reduction at full throttle did you get?

price b what kind of power do you have?

2 x dart m blocks 650 hp. 509ci.