need advice on clamp -on mufflers

Reply Subscribe

Thread Tools

08-24-2009, 10:17 PM

#11

2112

Registered

Join Date: Dec 2003

Location: Socialist Republic of Washington State

Posts: 1,988

Likes: 31

Received 12 Likes on 6 Posts

Is there a Cubic inch or horsepower limit to the CMIs?
.

08-24-2009, 11:11 PM

#12

Griff

Charter Member # 55

Charter Member

Join Date: Oct 2000

Location: Omaha/LOTO

Posts: 19,558

Likes: 4,176

Received 1,821 Likes on 907 Posts

Quote:

Originally Posted by eichhoma

yeah, sorry, I should have clarified.... with nothing on there now it seems easy for water to splash back up in there eassily and go down the risers.... I want to clamp something on that will provide a minimal amount of sound suppression, and also help prevent the possibility of water reversion....

I am basically looking for something like this I think:
http://www.hardin-marine.com/detail~ID~286.aspx

I just dont want to muffle the sound too much.

I am positive that you are significantly over the DB limit even with the Gibson's. I would just leave them on and close them when rafting. Thats what I do. If you really want something like you say, then the Shotguns will be perfect.
www.drewmarine.com

08-25-2009, 09:54 AM

#13

Brad Zastrow

Registered

Join Date: Jun 2001

Location: McHenry, Illinois

Posts: 2,287

Likes: 14

Received 79 Likes on 23 Posts

Here is a link to the CMI mufflers. Up to 1200 hp.
http://www.custommarine.com/accessories/Silencers.php

09-05-2009, 08:30 AM

#14

502ss

Registered

iTrader: (3)

Join Date: Aug 2007

Location: Sandown, NH - Sebago Lake Region, ME

Posts: 2,960

Likes: 0

Received 7 Likes on 7 Posts

Quote:

Originally Posted by eichhoma

Thanks Brad.... I really like the concept to them... I sure would like to hear what they sound like at idle though.... I guess thats the draw back here, I need to take a guess and buy something and try it, and most likely stuck with them if I dont like them.... I'm not really liking that

I just picked up four of the cmi sound elimination mufflers on eBay. I plan to fire on of my 502's today out of the boat and will shoot some video of both without the mufflers and with. Hopefully this will give you an idea of noise level

09-05-2009, 05:17 PM

#15

502ss

Registered

iTrader: (3)

Join Date: Aug 2007

Location: Sandown, NH - Sebago Lake Region, ME

Posts: 2,960

Likes: 0

Received 7 Likes on 7 Posts

Here you go!

108 DB without mufflers and 84 DB with!

http://www.youtube.com/watch?v=Xy-7UolI1No

http://www.youtube.com/watch?v=ZX0sVVShGc4

09-06-2009, 03:53 AM

#16

CB-BLR

Chris

Gold Member

Join Date: Sep 2005

Location: Snohomish, WA

Posts: 1,426

Likes: 0

Received 1 Like on 1 Post

Quote:

Originally Posted by 502ss

Here you go!

108 DB without mufflers and 84 DB with!

http://www.youtube.com/watch?v=Xy-7UolI1No

http://www.youtube.com/watch?v=ZX0sVVShGc4

Great and informative video's

Thanks,

Chris

09-08-2009, 08:56 AM

#17

eichhoma

Registered

Thread Starter

iTrader: (1)

Join Date: Jul 2007

Location: St. Louis / LOTO

Posts: 476

Likes: 7

Received 2 Likes on 2 Posts

Quote:

Originally Posted by 502ss

Here you go!

108 DB without mufflers and 84 DB with!

http://www.youtube.com/watch?v=Xy-7UolI1No

http://www.youtube.com/watch?v=ZX0sVVShGc4

GREAT Video!!! thank you so much for posting! I am still torn between those and the drew marine shotguns, mostly becasue I want something smaller..... GREAT demonstration!