Dual Exhaust
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=34282
Printed Date: May-03-2024 at 2:10pm
Topic: Dual Exhaust
Posted By: sanoman
Subject: Dual Exhaust
Date Posted: July-30-2014 at 11:14pm
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Has anyone converted an older single exhaust system to dual exhaust? Advantages/disadvantages? Dumb? |
Replies:
Posted By: Gary S
Date Posted: July-31-2014 at 12:09am
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What year is important ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: P71_CrownVic
Date Posted: July-31-2014 at 2:13am
Haven't done it as my boat was built properly (with two) No disadvantages though. The advantages are huge and include proper noise level and your boat not sounding like a Hoover vacuum. ------------- |
sanoman wrote:Posted By: Hollywood
Date Posted: July-31-2014 at 2:16am
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which is important while tubing ------------- |
Posted By: TRBenj
Date Posted: July-31-2014 at 7:53am
| Yes, it's been done. There are advantages and disadvantages to the final result. It is a more complicated conversion than you might think. |
Posted By: sanoman
Date Posted: July-31-2014 at 8:40am
Boat is an 89 ski nautique.l can see it could get way involved from the layout,right fittings and placement of mufflers.As far as correct height,you do have the one already installed to mock up from.As far as disadvantages TRBenj,what am l looking at? |
Posted By: backfoot100
Date Posted: July-31-2014 at 10:03am
Tim did this exact conversion on his 90. He used SS tubing that was mandrel bent to the right configuration on each side and was a trial and error type deal that was not only fairly pricey but time consuming. The end result was nothing short of phenomenal though. You can do the same thing or go with some fiberglass elbows connected with exhaust hose and clamps or you might be able to do the whole thing with wire reinforced exhaust hose if you can make the bends needed. Then you also have to drill out a hole on the transom for another exhaust tip. That can also be a bit tricky to make sure it gets drilled so it looks good compared to the existing one. If you're going through this trouble, why bother with mufflers? Another option is a premade Y-pipe arrangement available from Nautiqueparts.com that uses the existing exhaust tip. It eliminates the muffler so you get a great sound but it's a single exhaust. A much easier and still very effective conversion that just bolts in that several have done here. ------------- When people run down to the lake to see what's making that noise, you've succeeded. Eddie |
Posted By: TRBenj
Date Posted: July-31-2014 at 10:37am
It was actually mandrel bent pieces all custom fabbed (cut and welded together). That's the relatively straightforward part- though quite pricey. The trick is fitting everything into the space currently occupied by the steering system and gas tank.
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Posted By: scootdogydog
Date Posted: July-31-2014 at 11:29am
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http://correctcraftfan.com/forum/forum_posts.asp?TID=6888%20" rel="nofollow - trbenj 1990 conversion ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=7183" rel="nofollow - 1999 Python 1980 Ski Tique 1968 Mustang WIP |
Posted By: sanoman
Date Posted: July-31-2014 at 7:56pm
That's bad azz!!! Wonder if you could use silicone elbows from silicone intakes.com? l can see where you would get into a pile of poop bending till ya got it straight (correctly aligned).l would definitely put silencers or mufflers on it. Don't like loud pipes........ |
Posted By: IAughtNaut
Date Posted: July-31-2014 at 8:21pm
------------- bring the ruckus http://www.correctcraftfan.com/diaries/details.asp?ID=5347" rel="nofollow - 2000 Pro Air |
Posted By: 8122pbrainard
Date Posted: July-31-2014 at 8:46pm
The big problem is aft at the tiller arm. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: 74Wind
Date Posted: July-31-2014 at 9:12pm
 ------------- 1974 Southwind 18 1975 Century Mark II |
Posted By: JPASS
Date Posted: July-31-2014 at 9:38pm
What's the copper line going from the rudder housing to the transom in the first pic? ------------- '92 Correctcraft Ski Nautique |
Posted By: backfoot100
Date Posted: July-31-2014 at 10:29pm
So why even bother? ------------- When people run down to the lake to see what's making that noise, you've succeeded. Eddie |
Posted By: sanoman
Date Posted: July-31-2014 at 10:57pm
Why don't you all just beat me up! :-) Just weighing the pros and cons....... Duals always sound better.My 95 Prostar 205 had an awesome rumble to it with silencers. |
Posted By: P71_CrownVic
Date Posted: July-31-2014 at 11:01pm
Why is that? Do you do a lot of tubing? I just don't follow your "logic" that the auditory response one gets while their boat is running somehow affects the experience while tubing. I'm eagerly awaiting your explanation though. ------------- |
Posted By: Gary S
Date Posted: July-31-2014 at 11:44pm
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When I'm tubing competitively,especially on a short line,the quieter single exhaust really helps. My scores average 8% better with the 95 even though it accelerates slower than the 69. The playpen works out well too,it's easier to get Quinners empties out of there compared to a closed bow. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: gun-driver
Date Posted: July-31-2014 at 11:48pm
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^^ Pete will probably chime in soon since he is the in house tube expert. I believe it has to do with the force of the duels acting against lift while trying to over come the drag coefficient which initially effects the relative wind as the tube goes airborne from wake to wake. Just my guess at it
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Posted By: Gary S
Date Posted: August-01-2014 at 12:52am
Few more hours Paul   ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: Hollywood
Date Posted: August-01-2014 at 5:42am
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same as how it makes the driving or riding in the boat experience better ------------- |
Posted By: 86BFN
Date Posted: August-01-2014 at 9:39am
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Mufflers? Who needs Muffler? LOUD PIPES SAVE LIVES! +1 for Eddie ------------- 👣 Steve http://www.correctcraftfan.com/diaries/details.asp?ID=4057&sort=&pagenum=1&yrstart=1986&yrend=1986" rel="nofollow - 86 Barefoot Nautique 89 Martinique Former Owner: 93 Hydrodyne 350 MAG |
Posted By: Bri892001
Date Posted: August-01-2014 at 10:57am
I'd have to believe it's a remote for the rudder port zero grease fitting. So, it can be greased without taking the floor and seat out. Mine has a regular zerk, and it's a bit of a PITA, and I don't even have a back seat to move out of the way. Actually, you can get kits with flexible tubing for this purpose. I guess I'd just have to figure out where I want to mount the end. |
Posted By: JPASS
Date Posted: August-01-2014 at 11:09am
That's what I thought. When I went back and looked at the pics, I didn't see any zerk fitting to the right of the exhaust tip on the outside of the hull. Definitely a cool idea though. ------------- '92 Correctcraft Ski Nautique |
Posted By: Hollywood
Date Posted: August-01-2014 at 11:12am
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it would be on the left from the outside so try looking there... ------------- |
Posted By: TRBenj
Date Posted: August-01-2014 at 11:20am
| Read more closely... Pic posted of the bilge wasn't my boat (I failed to get a "before" shot) so don't expect to see a zerk on my transom. That greasable port came later- 94 or 95 maybe? Is it still in use or did it go away? |
Posted By: Bri892001
Date Posted: August-01-2014 at 11:49am
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I would tend to want the fitting to still wind up in my boat somewhere. That pic makes it look like the fitting would be under the waterline on the exterior, which seems a little wrong somehow. With the kits, you can choose the length you want. With the V-Drive length, you could probably have it pop up under the motor box somewhere on a direct drive: http://www.nautiqueparts.com/rudderportservicewhip51incbracket.aspx" rel="nofollow - http://www.nautiqueparts.com/rudderportservicewhip51incbracket.aspx |
Posted By: john b
Date Posted: August-03-2014 at 1:10am
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If Tim touched it, it's beautiful! ------------- 1970 Mustang "Theseus' paradox" If everyone else is doing it, you're too late! |