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08-08-2022, 04:51 PM #1New Member
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1999 Mercury off shore mid exhaust
Hi new to this forum and boating.Bought a older centerconsole with a 1999 200 with what i beleive is a 20 inch offshore midsection has the exhaust up by the cowl and out the prop .Its just to loud can I block off the top exhaust without doing no harm? any advice will be helpfull
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08-08-2022, 10:32 PM #2
Welcome to scream and fly. Lots of good guys on here. Can you post a pic of your motor and exhaust?
1990 Shadow bass boat w/ 2.4 200 Merc. Totally resto'd boat and love it!
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08-09-2022, 06:44 AM #3New Member
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I dont have one at the moment theres 2 slots at the top by the cowling from the factory i can tell you if that helps Thanks
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08-09-2022, 06:55 AM #4
I have a smooth back offshore mid and there is a plate i can bolt in or take out of the snout to quiet things down. Im not sure if all have this or not but ive read ridge back mids do not come with this. That said, cant be hard to add this for a fab shop
Hydrostream dreamin
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08-09-2022, 10:45 AM #5
The upper slot / slots / hole / is the idle relief port. Without it, the motor wouldn't have enough pressure to send the exhaust down and out of the prop hub.
If it's too loud (no such thing) Then chances are it has a cut inner can or a tuner that circumvents the exhaust from going around an internal baffle (mostly above the water line) to dampen the music ... err ... sound ...
You can make it quieter, but you will need to separate the powerhead from the mid section .. then change some stuff around inside the can ..
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08-09-2022, 07:16 PM #6New Member
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if it was a speed boat it would be ok loud but its a center console with that being said def not taking motor apart !guess i will have to live with it Thanks
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