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Old 11-16-2018, 08:53 PM   #1
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CAT Genset exhaust

New to us, (1st time RVERS), 04 MADP 4017. CAT genset exhaust seems loud a has a Ďvortexí looking device on the end of exhaust pipe which makes a swooshing sound. Annoying and loud.
Anyone have experience/ideas on how to quiet this CAT down a bit?
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Old 11-17-2018, 02:29 AM   #2
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Are you sure you have a "cat" generator, those 4017"s came with a diesel onan 7.5 as standard and a power tech 8.0 as an optional generator
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Old 11-17-2018, 02:32 AM   #3
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That "vortex" looking extension could be an adapter for a Gen-Turi exhaust system...
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Old 11-17-2018, 07:55 AM   #4
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Quote:
Originally Posted by nutcker View Post
Are you sure you have a "cat" generator, those 4017"s came with a diesel onan 7.5 as standard and a power tech 8.0 as an optional generator
Itís branded as a CAT( itís CAT yellow with Logo). I have read that CAT subbed out these smaller units to Perkins for Diesel engine and Powertech for generator.
I donít have any direct knowledge of who built the generator.
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Old 11-17-2018, 07:57 AM   #5
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Quote:
Originally Posted by saddlesore View Post
That "vortex" looking extension could be an adapter for a Gen-Turi exhaust system...
Possibly, Iíll get a picture and see if I can figure out how to post it.
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Old 11-17-2018, 10:44 AM   #6
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Quote:
Originally Posted by speedway View Post
Itís branded as a CAT( itís CAT yellow with Logo). I have read that CAT subbed out these smaller units to Perkins for Diesel engine and Powertech for generator.
I donít have any direct knowledge of who built the generator.
New to me as well and thought all the diesels were Onan Cummings with the kuboto engine.
Even though I'm a CAT man, I must say that our quiet diesel is indeed pretty quiet.
Should be something you can do about it, so start with calling CAT for what they might have.
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Old 11-17-2018, 06:42 PM   #7
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New to me as well and thought all the diesels were Onan Cummings with the kuboto engine.
Even though I'm a CAT man, I must say that our quiet diesel is indeed pretty quiet.
Should be something you can do about it, so start with calling CAT for what they might have.
Good idea, I will do some research.

This unit is definitely louder than others I have heard, especially the Oman units.
Ours doesnít slide out so access is poor, havenít had time for a good look at the system from manifold out.
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