Go Back  Offshoreonly.com > Technical > General Q & A
LS Build: In Progress >

LS Build: In Progress

Notices

LS Build: In Progress

Thread Tools
 
Old 05-15-2019 | 09:53 AM
  #371  
Thread Starter
Registered
10 Year Member
 
Joined: Jan 2016
Posts: 493
Likes: 17
From: San Tan Valley AZ
Default

Originally Posted by SB
There have been some pretty big cams in Eliminators that have their typical steep drop, low exit S pipes.

Is yours like many of the single engine Eliminators ?

yes. Mine is almost exactly like that. Mine would add water at the bottom right before she shoots through the transom

Last edited by mggdoors; 05-15-2019 at 10:33 AM.
mggdoors is offline  
Reply
Old 05-15-2019 | 09:55 AM
  #372  
Thread Starter
Registered
10 Year Member
 
Joined: Jan 2016
Posts: 493
Likes: 17
From: San Tan Valley AZ
Default

Originally Posted by Knot 4 Me
1,000 RPM idle with Bravos?
out of gear yes. Been doing it for 5 years on these ones no issues yet
mggdoors is offline  
Reply
Old 05-15-2019 | 10:17 AM
  #373  
Thread Starter
Registered
10 Year Member
 
Joined: Jan 2016
Posts: 493
Likes: 17
From: San Tan Valley AZ
Default

Originally Posted by Wildman_grafix
Why are you wanting to run wet? Most of us here have went dry, so no worries with reversion and really doesn't seem that bad. We normally run 30-40 miles one way also. They make some dry mufflers don't they if the noise bothers you?

Just thinking of the cost if it reverts compared to the cost of noise suppression.
Noise. Plain and simple. I had dry exhaust on my sunny and I hated it, the guy behind me hated it, cops hated it, and the guy two counties over hated it. We ran the ggb inserts in them before, even still have the inserts. They helped but not tremendously. Went from like 118db to 110. To me I figure it like this. If it is going to revert I will know pretty quick before I even leave my house. I would simply idle it down to 800 mimicking in gear and idle for few then pop off risers and verify. Then do it again at the lake on the no wake zone. If it doesnt revert by then then it aint going to.
mggdoors is offline  
Reply
Old 05-15-2019 | 02:08 PM
  #374  
Registered
15 Year Member
 
Joined: Jun 2007
Posts: 7,315
Likes: 1,819
From: Merritt Island, FL
Default

Originally Posted by mggdoors

Noise. Plain and simple. I had dry exhaust on my sunny and I hated it, the guy behind me hated it, cops hated it, and the guy two counties over hated it. We ran the ggb inserts in them before, even still have the inserts. They helped but not tremendously. Went from like 118db to 110. To me I figure it like this. If it is going to revert I will know pretty quick before I even leave my house. I would simply idle it down to 800 mimicking in gear and idle for few then pop off risers and verify. Then do it again at the lake on the no wake zone. If it doesnt revert by then then it aint going to.
I just did a quick look and it seems at best most claim are 12db, which is a good amount but if you were 118 will not be enough if you have noise restrictions. Man they are pricey to!

You could also wait and dump right at the end, that still kills a lot and is even further away.
Wildman_grafix is offline  
Reply
Old 05-15-2019 | 02:12 PM
  #375  
Thread Starter
Registered
10 Year Member
 
Joined: Jan 2016
Posts: 493
Likes: 17
From: San Tan Valley AZ
Default

Originally Posted by Wildman_grafix
I just did a quick look and it seems at best most claim are 12db, which is a good amount but if you were 118 will not be enough if you have noise restrictions. Man they are pricey to!

You could also wait and dump right at the end, that still kills a lot and is even further away.
The ggb inserts i have are i believe 7 disc. Definitely take the crack out. I will be dumping right before it goes through transom. My theory is between my angle of drop, length before mixing water, and ggb inserts pre water dump I may have a shot. Ive got a 20’ stick of stainless 3.5 and 4 so if i have to redo it do be it. Not trying to get prius quiet but reasonable especially with my minions on board

Last edited by mggdoors; 05-15-2019 at 02:17 PM.
mggdoors is offline  
Reply
Old 05-15-2019 | 02:17 PM
  #376  
SB
Registered
20 Year Member
 
Joined: Nov 2004
Posts: 14,106
Likes: 3,692
From: On A Dirt Floor
Default

Originally Posted by mggdoors

yes. Mine is almost exactly like that. Mine would add water at the bottom right before she shoots through the transom
I'd chance it. Again, I have seen many BBC with Yuge cams in Eliminators with that exhaust and you ask owner about reversion and they have no idea what you are talking about. LOL.

e must remember, there are many more modified engines in Eliminators than there are stock one's. hah.
SB is offline  
Reply
Old 05-15-2019 | 02:23 PM
  #377  
Thread Starter
Registered
10 Year Member
 
Joined: Jan 2016
Posts: 493
Likes: 17
From: San Tan Valley AZ
Default

Originally Posted by SB
I'd chance it. Again, I have seen many BBC with Yuge cams in Eliminators with that exhaust and you ask owner about reversion and they have no idea what you are talking about. LOL.

e must remember, there are many more modified engines in Eliminators than there are stock one's. hah.
Very true. Thats why the insurance is astronomical. As for exhaust Its worth a shot. I think ill do one engine initially and light it off at the house. Play with idle and timing some if it becomes an issue.
mggdoors is offline  
Reply
Old 05-15-2019 | 02:30 PM
  #378  
Registered
15 Year Member
 
Joined: Jun 2007
Posts: 7,315
Likes: 1,819
From: Merritt Island, FL
Default

Originally Posted by mggdoors

The ggb inserts i have are i believe 7 disc. Definitely take the crack out. I will be dumping right before it goes through transom. My theory is between my angle of drop, length before mixing water, and ggb inserts pre water dump I may have a shot. Ive got a 20’ stick of stainless 3.5 and 4 so if i have to redo it do be it. Not trying to get prius quiet but reasonable especially with my minions on board
You know when you say 7 disc I wonder why supertrap doesn't make a system that would go on. Then you could dial in the amount of noise. Seems like their universal stuff stops at 3.5"
Wildman_grafix is offline  
Reply
Old 05-15-2019 | 02:33 PM
  #379  
Thread Starter
Registered
10 Year Member
 
Joined: Jan 2016
Posts: 493
Likes: 17
From: San Tan Valley AZ
Default

Originally Posted by Wildman_grafix
You know when you say 7 disc I wonder why supertrap doesn't make a system that would go on. Then you could dial in the amount of noise. Seems like their universal stuff stops at 3.5"
Funny you say that. Im actually working on a design now. I just dont get paying some of the prices for mufflers I have seen
mggdoors is offline  
Reply
Old 05-15-2019 | 02:44 PM
  #380  
SB
Registered
20 Year Member
 
Joined: Nov 2004
Posts: 14,106
Likes: 3,692
From: On A Dirt Floor
Default

Yeh, Supertrapp had a marine SSMuffler years back. There used to be a bunch of old Fountain 10 and 12Meters with them back in the day around here.

i tried a set and the noise reduction wasn't good enough for our tight DB rules.

Believe it or not, the simple Drew Sidewinder Shotgun tips/mufflers (they use air pistons for slight resistance on the flaps)worked better for idle.low speeds (where it matters more)

Here is the drew's:

Last edited by SB; 05-15-2019 at 07:48 PM.
SB is offline  
Reply


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.