merc custom exhaust for standard midsections

**joseph1** · 10-12-2008, 10:09 AM

I have to be honest all I saw was a pic of the tools , no discription or pics of the mods ,sorry to be a pain . I just don't want to f-this up i cant afford to replace a motor .thank-you for your efforts .

**joseph1** · 10-12-2008, 10:12 AM

I found them ,too many drinks last night to see the attachment, thanks man

**wrechin2** · 10-12-2008, 10:19 AM

This sounds so sweet. Will give you a headace at slower speeds but who goes slow?????

**boatracer36** · 05-20-2009, 10:11 PM

This is the best thread I have ever read!! I have been looking for some instruction on how to do this and this is perfect. I really like how you can plug the cut outs too!! But does cutting the fins affect anything?? And what if the holes are under water when you are sitting??<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com

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**sl!ck** · 06-06-2009, 11:13 AM

THe area that your cutting is real thick and is angled inside my midsection it's a 1984 150HP Mariner. So anybody with an older unit may not be able to perform this mod without extensive cutting.

**sl!ck** · 06-06-2009, 02:04 PM

Originally Posted by sl!ck

THe area that your cutting is real thick and is angled inside my midsection it's a 1984 150HP Mariner. So anybody with an older unit may not be able to perform this mod without extensive cutting.

I found the Can!!!!

So i remove that and the tuner?????

**ZonkaRacing** · 06-06-2009, 05:56 PM

Originally Posted by sl!ck

I found the Can!!!!

So i remove that and the tuner?????

Yes, but you have to put the tuner back in once ur done.

I did this mod a couple days ago, but drilled 5 holes instead of the rectangles. Took me most of the day to pull the motor apart and do the mod, but it was my first time doing anything like this and it went really good!
Cant wait to hear her scream!

**Talon2.5** · 07-24-2009, 06:50 AM

Cool to see this is still helping people

**rudecraig** · 07-24-2009, 08:14 AM

i'd really like to do this mod but don't really want to pull the power head off.was looking at some that drilled in the rear and put the bob's unit on,i like the look of that but don't want to crack my mid.what about drilling the lower,anyone ever have any problems with that?i did that on a evinrude 135 years ago and the sound was awesome.thanks

**c10stuntin** · 07-27-2009, 08:31 PM

hey yall im new on here and pretty new to the gofast scene too ive been workin on obs my whole life and know them in and out and have a ton of ideas and theorys just never tryed any and unfortunatly the boat i just bought has a really clean fresh 200 on it that i dont wanna hack untill i know its gonna be a wise mod. any one care to hookup for some tech talk on this stuff with me id really apretiate it.

**astro@ptd.net** · 05-08-2010, 10:31 PM

Great read!! Searched for something like this and figured others may want to see as well.

**cvsteve** · 05-09-2010, 09:07 AM

Subscribed...and it also appears that it could be done to an inline 6! I'll look into it but if some one else has better knowledge of doing it to an inline( pros and cons), I'd like to here about it. By the way, it will be done to my xr4. Thanks for the great tutorial!