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Exhaust thru an extension box

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Old 02-12-2005, 04:50 PM
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Default Exhaust thru an extension box

I am looking at a new 382 formula and it has stelling boxes and corsa captians call that runs thru the extension bax. I have never heard of this I thought that with box's you had to run mufflers??? Anybody ever heard of this b/4.
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Old 02-12-2005, 04:52 PM
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Default Re: Exhaust thru an extension box

Nope.
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Old 02-12-2005, 05:00 PM
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Default Re: Exhaust thru an extension box

I don't know about the stellings box, but the ITS can use the standard bullhorn exhaust connection.
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Old 02-12-2005, 05:13 PM
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Default Re: Exhaust thru an extension box

per the dealer it's a merc. racing set up??? i will me in miami on wed. for th show and i need to look at this set up
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Old 02-12-2005, 09:06 PM
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Default Re: Exhaust thru an extension box

I have a 2003 382 with Corsa Captains call with Corsa extensions that go Thu the Stellings boxes. It was installed at the Formula factory and works fine. The motors are Merc 525's.
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Old 02-13-2005, 09:27 AM
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Default Re: Exhaust thru an extension box

sounds like the set up but this boat has 575's, do you like the boat set up this way??? and how does it run???
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Old 02-14-2005, 09:40 PM
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Default Re: Exhaust thru an extension box

It runs well. The Corsa tips cost about 3 mph off the top speed, so they are gone. With 4 people and 100 gallons it runs 79 to 81 at sea level in the Fla Keys. The best I have seen is 84.6 in fresh water at 800 ft. Haven't done any light testing in the salt water but I would guess 85 + is possible. You will need 5 blade props to allow low speed capability, (staying on plane). The corsa opens up at 2800 - 3000 rpm no matter what, and this can be annoying.
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Old 02-15-2005, 11:44 AM
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Default Re: Exhaust thru an extension box

I have an Stellings extension box. The space in there is very tight. BUT! If a extension was fabricated I could see the exhaust being put through there. Sure would be tight though.
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Old 02-15-2005, 12:54 PM
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Default Re: Exhaust thru an extension box

A friend of mine has exhaust going
through stellings boxes.

It has a piece of exhaust hose, connected
to a couple of adapters( to connect to the
y pipe, and transom assy) on each end.

And yes, it's a tight fit.

jt
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Old 02-15-2005, 11:19 PM
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Default Re: Exhaust thru an extension box

i run mainly in lake mich. and i agree, the "muffler tips" have to go i like the old school look of the angle cut tips from cp. sounds like a lot of work to me?????
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