Perkins 4.108 Air Cleaner / Silencer - SailNet Community
 
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post #1 of 7 Old 07-22-2013 Thread Starter
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Perkins 4.108 Air Cleaner / Silencer

Dear All,
I cannot seem to find exactly what I am looking for so I thought a picture might help. One is the cover of the manual and the second describes what I am looking for. Any ideas?

Thanks,
Chris
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cover - perkins installation.jpg   Perkins silencer.jpg  

Last edited by ccolton; 07-22-2013 at 01:13 PM. Reason: forgot to say thank you
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post #2 of 7 Old 07-22-2013
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Re: Perkins 4.108 Air Cleaner / Silencer

Chris,

That's a new topic for me -- I've never seen your references.

That said, it looks like it would be a pretty simple thing to fabricate (note I said simple, and not necessarily inexpensive...)

Basically, you're looking at installing a run of air induction ducting from your desired intake point to your engine. Depending on your engine install, this could be incredibly easy or frustratingly difficult.

I'll be following this thread to see how it goes...

ATB,
PF


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post #3 of 7 Old 07-23-2013 Thread Starter
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Re: Perkins 4.108 Air Cleaner / Silencer

Hi Porfin,
Thanks for the reply.
I guess the real question I have is this: what's inside the air filter/silencer? Is it just a container that has a filter in it?

If so, and I will show my ignorance here, why would mounting it away from the engine quiet the engine?

Thanks,

Chris
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post #4 of 7 Old 07-23-2013
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Re: Perkins 4.108 Air Cleaner / Silencer

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Originally Posted by ccolton View Post
Dear All,
I cannot seem to find exactly what I am looking for so I thought a picture might help. One is the cover of the manual and the second describes what I am looking for. Any ideas?

Thanks,
Chris
You might want to look into the Walker AirStep. These are quite costly however and really aren't necessary although they supposedly quiet the intake of the 4-108.

"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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post #5 of 7 Old 07-23-2013
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Re: Perkins 4.108 Air Cleaner / Silencer

Chris,

I'm not sure about the design of the filter/silencer you've found.

The original design for the 4.108M air "cleaner" is nothing more than a screen with openings big enough to stop things about the size of wood chips -- not exactly what you'd expect to see if you're concerned about dirt getting into the intake. It also does a very poor job of attenuating any noise you've got coming from the intake manifold.

A good filter (like a K&N) would reduce the noise coming from the intake.

A good reason to remote the air intake is to draw cooler air directly into the engine. If your engine install is anything like mine, it's in a relatively cramped area that warms up pretty quickly. Cooler air is better for compression/combustion.


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Last edited by PorFin; 07-23-2013 at 02:24 PM.
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post #6 of 7 Old 07-24-2013 Thread Starter
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Re: Perkins 4.108 Air Cleaner / Silencer

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Originally Posted by PorFin View Post

A good reason to remote the air intake is to draw cooler air directly into the engine. If your engine install is anything like mine, it's in a relatively cramped area that warms up pretty quickly. Cooler air is better for compression/combustion.
Dear Porfin,
Thank you.

A good point about the cooler air and, yes, like you, I have a cramped engine area. Almost enough to make me a power-boater...No, not enough.

If I hear from anyone else, I will write back.
Chris
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Re: Perkins 4.108 Air Cleaner / Silencer

Dear svHyLyte,

Yes, I am familiar with both the Walker AirSep and with its price. It's a good recommendation and I may opt for it but I want to see if I can figure out exactly what this induction air filter/silencer is first.

Chris
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