Exhaust/Mufflers
12-22-2007, 06:41 PM
#21
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Thread Starter
[QUOTE=boatnt;2380199]
Thanks Tom
Rob -
The CMI Sound Elimination Mufflers work great honestly.
Muffled at idle and open while running yet take the bark out of the exhaust.
Zastrow ran them right around 900 HP and passed with Lake County.
Let me know what size and if you want clamp on or transom mount and I'll get you pricing. Email me at [email protected]
Merry Xmas,
Kirk
This in my next door neighbor,so be nice with those prices
The CMI Sound Elimination Mufflers work great honestly.
Muffled at idle and open while running yet take the bark out of the exhaust.
Zastrow ran them right around 900 HP and passed with Lake County.
Let me know what size and if you want clamp on or transom mount and I'll get you pricing. Email me at [email protected]
Merry Xmas,
Kirk
This in my next door neighbor,so be nice with those prices
12-22-2007, 06:44 PM
#22
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Thread Starter
12-22-2007, 06:47 PM
#23
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Thread Starter
Hey Rbeyer, I just bought and installed a set of short barrel through transom Zoomers on my boat. The hot boat article on mufflers was March 2005. Zoomers supposedly helped top speed when installed on a boat. I feel that isn't very probable, but I hope the loss is minimal. They look good to me, all 304 stainless construction, I saw a thread on hot boat where someone was complaining of corrosion issues after one season of freshwater use. Hope its not true, I will see this coming summer.
I decided to give them a try after reading the hot boat article. I got a great deal on them from Trick Marine- 275.00 shipped to my door. Really. (I know I probably just ruined this thread.) Anyway I will let you know what I think of them when I can first test them.
I decided to give them a try after reading the hot boat article. I got a great deal on them from Trick Marine- 275.00 shipped to my door. Really. (I know I probably just ruined this thread.) Anyway I will let you know what I think of them when I can first test them.
Bob
12-23-2007, 11:38 AM
#25
Platinum Member
Here is what I did on my 38 Cigarette w/1100h.p. Psi blowers. They are under water @ idle and all 4 are between the drives and pointing downward, when up on plane.
A "little bark" when coming up on plane, but at speed the sound is quite acceptable. I have not done a db check at idle or cruise, but will do so next boating season and post the results.
A "little bark" when coming up on plane, but at speed the sound is quite acceptable. I have not done a db check at idle or cruise, but will do so next boating season and post the results.
12-23-2007, 03:01 PM
#26
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Thread Starter
Here is what I did on my 38 Cigarette w/1100h.p. Psi blowers. They are under water @ idle and all 4 are between the drives and pointing downward, when up on plane.
A "little bark" when coming up on plane, but at speed the sound is quite acceptable. I have not done a db check at idle or cruise, but will do so next boating season and post the results.
A "little bark" when coming up on plane, but at speed the sound is quite acceptable. I have not done a db check at idle or cruise, but will do so next boating season and post the results.
12-23-2007, 03:38 PM
#27
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I ran the GGB's with 1000+ HP for a couple seasons. They worked great. I did have a weild break and switched to the CMI Sound Elimination Mufflers for a while. They worked just as well, but I liked the GGB look better. For current models available the CMI are my choice. I do have two sets of 4.5" CMI's for sale, 4.5" clamp on. One set is new and the other has about 20 hrs.
12-23-2007, 05:55 PM
#28
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I ran the GGB's with 1000+ HP for a couple seasons. They worked great. I did have a weild break and switched to the CMI Sound Elimination Mufflers for a while. They worked just as well, but I liked the GGB look better. For current models available the CMI are my choice. I do have two sets of 4.5" CMI's for sale, 4.5" clamp on. One set is new and the other has about 20 hrs.
12-23-2007, 09:29 PM
#30
RBeyer.
They are 4" 304ss, made with 2 U-bends, 2 90's and several feet of straight. It took a friend of mine that is a whiz at race car fab., 15-18 hours to fab. and weld.
The only thing that I would do over is to have the round plates that hold them to the transom made out of a thicker ss than I used. When he welded them to the tubing they warped and it took a lot of effort to make them flat.
They are 4" 304ss, made with 2 U-bends, 2 90's and several feet of straight. It took a friend of mine that is a whiz at race car fab., 15-18 hours to fab. and weld.
The only thing that I would do over is to have the round plates that hold them to the transom made out of a thicker ss than I used. When he welded them to the tubing they warped and it took a lot of effort to make them flat.
