$txt['youtube'] = 'YouTube'; $txt['youtube_invalid'] = '#Invalid YouTube Link#'; Water Cooled Muffler - New Design

Author Topic: Water Cooled Muffler - New Design  (Read 730 times)

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Offline Hillbilly

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Re: Water Cooled Muffler - New Design
« Reply #15 on: August 22, 2020, 07:30:08 AM »
Tom, this muffler looks like a beautiful piece of work.  What do you think about the sound of the boat with the new muffler?  Your video has times when new sounds much like old muffler and times when it sounds louder and maybe harsher.  What is your in person impression?

Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #16 on: August 22, 2020, 08:29:31 AM »
Thanks, George. I'm very happy with it so far. I wanted a more rugged and compact muffler and so far it's totally fit that bill. I have to keep going back to watch other videos in comparison and like I've said in the videos it's hard to tell if it's louder or not. Maybe a touch, but while riding I never have the feeling that is' overly loud, there is definitely a different tone to it, but nothing is cracking in my ear like any of the stock Mokai mufflers. It's a comfortable tone and level, and even if it is a touch louder in the end, the fact that it's smaller, lighter, while being 2-3 times as rugged, is sealing the deal for me. I built one last night for my 2003, without the water cooling this time to see how that sounds / performs. Will test that next week.  \./8
Tom

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Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #17 on: August 24, 2020, 02:17:57 PM »
Tested the dry version today, I didn't notice any detectable difference between the two audibly; but the video comparison was surprising.
More testing to prove durability but I'm not seeing any reason for concern. This whole project has gone better than expected, nice for a change, but always makes me wonder what the trick is. haha  :D

<a href="http://www.youtube.com/watch?v=a_gxZtPMeqY" target="_blank">http://www.youtube.com/watch?v=a_gxZtPMeqY</a>
Tom

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Offline bizler

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Re: Water Cooled Muffler - New Design
« Reply #18 on: August 25, 2020, 02:16:04 PM »
Nice job in demonstrating the comparison. The old muffler seems a bit more mellow in tone and slightly quieter to me. Both are quieter than the stock muffler would be.  I would imagine the SS Version will last longer.   \./8

Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #19 on: August 25, 2020, 04:15:16 PM »
Thanks. They are close enough in sound that it's not definitive either way. The thick stainless construction is worth it's weight, but still lighter than my previous version. I like to make things that will last as long as possible, and this will for sure surpass any exhaust I've made in the past. Icing on the cake is they aren't going to be priced much higher than what I've been selling, so big increase in quality for a small increase in price.  \./8
Tom

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Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #20 on: August 26, 2020, 07:34:20 PM »
I'm in Tom! Let us know when they are available.

Email me when you are ready to order.  \./8  painlesstom@improvingyourmokai.com
Tom

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Offline Duff

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Re: Water Cooled Muffler - New Design
« Reply #21 on: August 30, 2020, 10:03:04 PM »
YEAH - I Like That !

Offline WV-Holler

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Re: Water Cooled Muffler - New Design
« Reply #22 on: September 09, 2020, 06:57:27 PM »
Hey Tom,


I was curious about the panel highlighted in this picture.


Heat flow management?


Doesn't the starboard side opening under the cover spill out unwanted heat?


Just wondering.
Chris

Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #23 on: September 09, 2020, 07:36:38 PM »
I have my air intake intercooler instead of the stock air filter housing, so water sprayed back into that area would go in the intercooler and carburetor. The shield prevents that.
Tom

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Offline Mr. Murphy's Law

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Re: Water Cooled Muffler - New Design
« Reply #24 on: September 10, 2020, 05:42:08 PM »
Big T, can you share any performance improvements other than slightly cooler engine compartment temps ?
I hide in the shadows, I hide in the Light ...and just when you think everything is going fine...I LEAP out and strike !!!

Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #25 on: September 10, 2020, 06:50:06 PM »
Over the previous version? There are no performance gains. This wasn't about gaining more performance, just wanted a water cooled muffler that was stainless, and tough. Copper coils brazed to a thin wall steel muffler body required specific care for long life, and if you ran it dry for too long at full throttle it would ruin the copper tubing. I wanted it to take some abuse without concern, as well as options to rebuild the baffles later if needed. Water cooling the muffler keeps engine compartment temps in check, which means the engine cools better and the carb gets cooler air to breathe. That keeps your performance consistent throughout the whole trip, start to finish at the same rpm. It's a well worthy improvement that I wanted to improve upon, and it's been a winner so far.
Tom

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Offline Hillbilly

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Re: Water Cooled Muffler - New Design
« Reply #26 on: September 24, 2020, 06:13:42 AM »
Just spent a day on the water with Tom's new water cooled muffler.  Installed and tested Tues. and on the water all day yesterday.  Installation was a breeze.  Tom sent the whole kit, with hoses, connectors and everything needed.  The fit of the muffler was perfect.  Muffler itself takes up less space in engine box.  On the water, sound is maybe a little quieter than old model, certainly not louder.  Exhaust flow appears to be improved over old model too.  My motor had more top end power than before.  After a long run, I turned the motor off.  After about 5 minutes, I could put my palm on the muffler.  Warm, not hot.  And the muffler itself has no wrapping.  Total success.  Thanks, Tom

Offline Painlesstom

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Re: Water Cooled Muffler - New Design
« Reply #27 on: September 24, 2020, 07:24:17 AM »
Great to hear, George! I couldn't be happier with it myself, it's worked out even better than I imagined. So happy it's working great for you, and thanks for the review!!  \./8
Tom

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