Straight pipes
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=33476
Printed Date: November-17-2024 at 4:58pm
Topic: Straight pipes
Posted By: Waterdog
Subject: Straight pipes
Date Posted: April-30-2014 at 9:36pm
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Should I run straight 3in rubber exhaust to the exhaust tip or .063 stainless tube in place of the f/glass mufflers ? How long is a the run from the riser to exhaust tip for a rubber hose ? 86 / 2001 ------------- - waterdog - http://www.correctcraftfan.com/diaries/details.asp?ID=3896&sort=&pagenum=2&yrstart=1978&yrend=1978" rel="nofollow - 78 Ski Tique |
Replies:
Posted By: Orlando76
Date Posted: April-30-2014 at 9:48pm
| I've seen some guys run rubber the whole way but not certain of the pro's and con's but probably cheaper to run rubber. I'd throw stainless pipes in there myself. Glad to hear you're pulling mufflers. |
Posted By: TRBenj
Date Posted: May-01-2014 at 10:56am
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6' per side might do it... I'll try to remember to measure today. 7' will do it for sure if youre in a rush, Andy. Zach may also know off the top of his head. Stainless tubing like you can find http://www.verociousmotorsports.com/Shop-by-Category/3-00-3/" rel="nofollow - here is going to be about the same price per foot as the high quality corrugated exhaust hose (I wouldnt use anything else, especially for the bends). If you have good hose sections and are just swapping out the mufflers, it will be cheaper to drop the stainless right in. If youre starting from scratch with all new hose, it will be a few dollars cheaper to use just the hose- but you'll also eliminate the connections below the floor, which isnt a bad thing. If starting from scratch, the only real reason to consider the stainless is if you want the option to swap mufflers in at some point. It will also make the boat incrementally louder, but the hose all by itself (no mufflers) will already be fairly loud. |
Posted By: Riley
Date Posted: May-01-2014 at 11:09am
| We've got a pair of copper tubes that came out of a 74 Skier if you're interested. |
Posted By: phatsat67
Date Posted: May-01-2014 at 11:13am
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I can measure tonight if you won't be near the boat. Rubber actually makes the boats fairly quiet with no mufflers but stainless is clearly going to be much louder. ------------- |
Posted By: TRBenj
Date Posted: May-01-2014 at 11:26am
I disagree... the more metal in the exhaust, the louder it will be- but straight hose will be plenty loud. No extra stainless in our BFN, its all hose. Compression ratio and exhaust manifold material are also big contributors to volume. |
phatsat67 wrote:Posted By: phatsat67
Date Posted: May-01-2014 at 11:32am
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True, I just know Vince's footer isn't much louder than Teddy's (rubber vs mufflers). Mark's boat isn't comparable because it has such a short exhaust run and 4" pipes. Dad's MC with rubber except for the 45 degree bends was actually pretty loud. It was an HO Indmar though so maybe more compression. ------------- |
Posted By: gun-driver
Date Posted: May-01-2014 at 11:38am
NOT!! I went straight rubber in my '85 and I can tell you from the driver’s seat it's not too bad but in the rear seat it is obnoxiously loud. If you’re on a small lake the early morning runs are going to draw some attention real quick. |
Posted By: phatsat67
Date Posted: May-01-2014 at 11:40am
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Oh Paul it's because yours had a hot motor ;). Swear Vince's footer is not much louder than my stock 86 mufflers. ------------- |
Posted By: TRBenj
Date Posted: May-01-2014 at 11:49am
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The HO Indmar shouldnt have been any different than a PCM with compression in the mid 8's... if you thought it was loud, it probably was! Have you spent any time behind Vince's boat? You notice the difference in volume when the pipes are aimed at you, either at the end of a rope or from shore. Not so much from the driver's seat. |
Posted By: Riley
Date Posted: May-01-2014 at 11:52am
| We used SS pipes in our Cuda and it is not as loud as I thought it would be. It is not nearly as loud as our Malibu with 3.5" rubber hose. |
Posted By: Hollywood
Date Posted: May-01-2014 at 12:14pm
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saves lives ------------- |
Posted By: phatsat67
Date Posted: May-01-2014 at 12:41pm
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Yup, I have been on shore, inside, and behind it. Maybe I am just having brain farts today but dad's mc was way louder than the footer. I learned to deep water boom beside that footer. Done some double and single runs behind it probably 15 times or so. I won't be able to verify my thoughts anymore though as it is running 4 inch this season. I somehow knew before I saw what HW posted was that it was going to be a reference to that shirt ha. Mark's V drive sounds like an offshore boat with those short run pipes and Stainless 45 bends in it. ------------- |
Posted By: Waterdog
Date Posted: May-01-2014 at 1:06pm
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Almost started this as "loud pipes save lives" How long is the all rubber exhaust from riser to exhaust tip? Less clamps less places to leak. Is the stock hose 3.0ID right? ------------- - waterdog - http://www.correctcraftfan.com/diaries/details.asp?ID=3896&sort=&pagenum=2&yrstart=1978&yrend=1978" rel="nofollow - 78 Ski Tique |
Posted By: phatsat67
Date Posted: May-01-2014 at 1:22pm
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Yup, 3.0 Corrugated. I might take a little ride tonight so I can do a measure estimate on the needed length for all rubber. ------------- |
Posted By: TRBenj
Date Posted: May-01-2014 at 1:25pm
Like Zach said, hose is all 3", and that is the ID. If you go with stainless tubing, that is the OD and it will match up nicely with the 3" hose. Copper pipe is sized slightly differently (possibly by ID) so it will be a bear to get installed, as the OD of the pipe is larger than the ID of the hose. |
Posted By: Hollywood
Date Posted: May-01-2014 at 1:33pm
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^ heat and lube Can't be much worse than installing the cold water shower T in a BFN 1.25" wire reinforced hose. OMFG that was a 2 man, 30 minute ordeal. ------------- |
Posted By: Riley
Date Posted: May-01-2014 at 1:36pm
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Copper is 3" inside diameter I believe. Correct Craft crimped them to fit the hose. Fitting the SS tubes to the hose and getting all the lengths right was quite a fight for me. Each side took a lot longer than I expected. Straight hose isn't a bad way to go. Easier and no joints under the floor. |
Posted By: TRBenj
Date Posted: May-01-2014 at 1:38pm
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Installing a proper sized barbed tee into a wire reinforced cooling hose should be no big deal... unless youre attempting to do it dry, of course. A little water and some dish soap makes it about 1000x easier. Same goes for exhaust hoses onto manifolds, etc. Wrestling an oversized copper pipe (at least 3.1" OD) into a 3" ID corrugated exhaust hose is a much bigger PITA. Trust me! Ive seen several sets of original copper pipes that are all crimped on the ends- its a real chore to get them started otherwise, but can be done. That crimping looks like it was counterproductive to exhaust flow. |
Posted By: oldcuda
Date Posted: May-01-2014 at 1:47pm
| Riley how long are those 3" copper pipes?I was saving a set for future use but they grew legs.Think copper has a tone that can't be beat. |
Posted By: Riley
Date Posted: May-01-2014 at 1:58pm
| I forget exactly, but think somewhere from 28" to 32". We ended up cutting the SS pipes we bought which were 36" to about the same size. I can measure this weekend and let you know. |
Posted By: phatsat67
Date Posted: May-01-2014 at 1:59pm
Hahah ------------- |
Posted By: Gary S
Date Posted: May-01-2014 at 1:59pm
When we were out taking pictures of my boat on the river run the Mrs said she could hear it back at Parramores  ------------- 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: storm34
Date Posted: May-01-2014 at 2:11pm
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Nothing beats copper! http://i1266.photobucket.com/albums/jj532/chrismars515/IMG_3311_zps98dbc242.mp4" rel="nofollow">  [/IMG]We threw some copper in the 78 Tique (warmed up 302) and it was a PITA as Tim mentioned. Sounds great tho!!! If you want volume and a good note, go copper. Pat swapped his mufflers out for the SS Tim listed above and it sounds better, but not nearly as good as copper IMHO. ------------- |
Posted By: phatsat67
Date Posted: May-01-2014 at 2:29pm
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Copper is the bomb though. The SS makes it sound more like straight pipes on a truck. Copper gives it a specific tone. ------------- |
Posted By: Waterdog
Date Posted: May-01-2014 at 2:46pm
I'm not in a big hurry Tim.If I can knock it out in the next couple of weeks that's good. 6x2 =12 7x2 =14 1 foot = $18, 2 foot extra = $38, 3x18 packs of Bud Ice = $36 I'm no mathmagician but thats a good weekend ------------- - waterdog - http://www.correctcraftfan.com/diaries/details.asp?ID=3896&sort=&pagenum=2&yrstart=1978&yrend=1978" rel="nofollow - 78 Ski Tique |
Posted By: Orlando76
Date Posted: May-01-2014 at 2:48pm
| In my experience, manifold has A Lot to do with tone. Our '75 has PCM manifolds and risers and sounds bad @$$ with mega deep tone. The '76 has Escort manifolds and it's equally loud but the tone is, meh, no where as deep. Other than that, identical hose and copper pipes. |
Posted By: TRBenj
Date Posted: May-01-2014 at 3:43pm
| Sorry Andy, you need the full 7' per side on a 2001. There may be a few inches to spare but 6' would leave you short for sure. |
Posted By: phatsat67
Date Posted: May-01-2014 at 3:50pm
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Get your measuring stick out Tim? ------------- |
Posted By: Hollywood
Date Posted: May-01-2014 at 5:03pm
Sounds like Tim needs one of these ------------- |
Posted By: 8122pbrainard
Date Posted: May-01-2014 at 8:46pm
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Ok people it sounds like the loudness is a big factor. How loud is it? Some say loud and some say quite so I feel it's time to get the DB meter out, set it on the A scale and take the reading at transom to deck level at WOT. Then report the reading as well as what type/material exhaust you have. Many here have IR temp guns so why not a DB meter??? With the data, there won't be any more guessing. ------------- /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: Waterdog
Date Posted: May-01-2014 at 9:03pm
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Everyone knows it will be louder, how do ya measure "tone". Like the way Mustang (cars) sound (to me) like their gargling water. I'm no Mustang fan but they do sound unique & cool. The thing that I like is less joints ahhh connections  in the system. ------------- - waterdog - http://www.correctcraftfan.com/diaries/details.asp?ID=3896&sort=&pagenum=2&yrstart=1978&yrend=1978" rel="nofollow - 78 Ski Tique |
Posted By: gun-driver
Date Posted: May-01-2014 at 11:26pm
Huh, what....what did Pete say??? Zach can you hear him?? What did he say get a multimeter?? 
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