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Side exhaust

Old 12-05-2014, 07:34 PM
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Default Side exhaust

I UNDERSTAND THERE WERE A NUMBER OF OFF SHORE BOATS N THE 60's70's THAT RAN WITH SIDE EXHAUST:

1. What was the advantage of side over rear exhaust ?
2.Who was the principal manufacture ?
3.I understand they were considerable louder than rear exhaust.
4.What were some of the boats that raced with them
5.Dd they give the boat any advantage ?

Any other feed back would be helpful...Bud
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Old 12-05-2014, 07:49 PM
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why would they be louder? I don't see why there would be any difference...
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Old 12-05-2014, 10:21 PM
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Still remember the INXS boat of Sabarese had side exhausts.

It was insanely loud - pretty quick too.
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Old 12-06-2014, 12:03 AM
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1. What was the advantage of side over rear exhaust?
Nothing, just the closest way to get out of the boat

2. Who was the principal manufacture?
A couple builders did it on a couple production boats. I think Chris Craft did it on a couple models.

3. I understand they were considerable louder than rear exhaust.
Sounds level is the same but it’s only 4 out of 8 cylinders because the boats hull blocks the noise from the other exhaust outlet.

4. What were some of the boats that raced with them?
My 1967 Nova 24 race boat because it had one motor in front and one in back both tail to tail going to a single V drive to a single prop.

5. Did they give the boat any advantage?
See #1

https://www.youtube.com/watch?v=zg_Tg1BrwHU&list=PLBcphYdOqWq6SD-TBhKMaDSx5o5rbpuQE&index=7
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Old 12-06-2014, 02:48 AM
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Hi Bud, I remember the side exhausts, they were really cool. They were only louder for the crew because the discharge is closer to the people in the boat, instead of when they go straight out the transom. They are louder for spectators because the boats would normally go across your field of vision and so you were subjected to hearing the exhaust end-on, which is naturally louder.

I think it was Patterson that used to be the main manufacturer, not sure what happened to them, you don't hear of them any more??

I Like it Too, Black Tornado, Dantes Inferno/Kaama 36' Cig, a lot of the Bertram 38's, all had side exhausts. I'm not sure why thy were favoured but they were brilliant.

I know the engine builder/throttleman for a boat called I Like it Too. It was very successful in the UK in the early-mid 70's. The boat was previously Aeromarine III. The guy I'm talking about has very bad hearing......he says that it was the side exgausts on that boat that did it......

I'm pretty sure the reason people stopped using them was to allow for better access around the engine compartment. Also Kiekhaefer developed his own headers which were desigbed to develop maximum torque/power at c.5000 rpm and as a consequence they were a lot bigger, so they were better suited to running fwd/aft......

[ATTACH=CONFIG]533728[/ATTACH]

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Attached Thumbnails Side exhaust-my%2520photos%25201936.jpg   Side exhaust-kaama__1980_.jpg   Side exhaust-da0063sm.jpg  

Side exhaust-bellaria75e1.jpg   Side exhaust-scan0205.jpg   Side exhaust-eraf%2520red.jpg  

Side exhaust-mercgunsresizde8.png   Side exhaust-toleman-bertram%2520engine.jpg  

Last edited by Ratman72; 12-06-2014 at 05:52 AM.
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Old 12-06-2014, 02:59 AM
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[ATTACH=CONFIG]533733[/ATTACH]

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Attached Thumbnails Side exhaust-whittaker_moppie__1973_.jpg   Side exhaust-toleman%2520group%2520-1980-%25202_jpg.jpg   Side exhaust-pangare%2520gringo%2520-1975-_jpg.jpg  

Side exhaust-dogone-_1994_.jpg   Side exhaust-img008a.jpg   Side exhaust-6404_10151340523662744_1246501868_n.jpg  

Side exhaust-382073_10151340523017744_505914534_n.jpg  

Last edited by Ratman72; 12-06-2014 at 03:09 AM.
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Old 12-06-2014, 05:49 AM
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I would think it also gave them a little more room to work on the engines. On a full stagger set up the pipes from the front motor can be a problem when trying to get at the rear engine. Now you see a lot of them just running the pipes out the top, through to engine hatches
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Old 12-06-2014, 11:00 AM
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Nice Nova, Maltese Magnum Twin had a very similar configuration.

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Attached Thumbnails Side exhaust-maltese_magnum_twin__1969_.jpg  
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Old 12-06-2014, 11:50 AM
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Thanks but it's really Brownies boat I'm the keeper of it for a while.





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Old 12-06-2014, 12:40 PM
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Very nice, are they 350's or 383's?

Last edited by Ratman72; 12-06-2014 at 02:26 PM.
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