Let's discuss the dust pattern in this air filter pic - Page 2 - Yamaha Grizzly ATV Forum
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post #16 of 34 Old 10-14-2016, 04:50 PM Thread Starter
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Once past warranty, I might be more interested in trying a custom airbox mod. I can't go look at the machine to see what I think of the universal flange idea, because it's in the shop getting new valve seals.

CBull posted in the "smoking on cold start" thread that even with the donut greased, fine dust is still getting in. The way I see it there are 3 possibilities for this:
1. The Yamaha filter is not fine enough, or
2. He greased the donut's face but not the edge and it's open cell foam, or
3. There is some other filter seal problem and there is a gap.

I'm going to grab a UNI filter and compare the inner foam with Yamaha's.

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post #17 of 34 Old 10-14-2016, 05:04 PM
 
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Quote:
Originally Posted by Scoundrel View Post
I'm going to grab a UNI filter and compare the inner foam with Yamaha's.
While you're at it, I would compare to a Twin Air as well.

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post #18 of 34 Old 10-14-2016, 05:04 PM Thread Starter
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Quote:
Originally Posted by RockTaco View Post
How about mounting a universal flange on the inside of the air box so a universal Uni (or other) filter could be used?

https://www.google.com/search?q=3+in...pZX8kyW4uJM%3A

I can't go out and look at the machine right now, but looking at this diagram, I don't see why you couldn't mount a flange like that, with a really good seal behind it, to the inside of the airbox. Part #8 (is that one piece, or an assembly?) might still be able to stick through there, or you could cut it off inside of the airbox after its attachment point. A spare Part #8 is only $18.99 so if that didn't work out, it would be easy enough to replace.
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post #19 of 34 Old 10-14-2016, 05:08 PM Thread Starter
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Quote:
Originally Posted by Denali4me View Post
While you're at it, I would compare to a Twin Air as well.
Looks like they don't have one yet. At least not indexed by the right model/year. What other Yamahas use the same filter?

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post #20 of 34 Old 10-20-2016, 06:17 PM Thread Starter
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Got the UNI filter. I examined it closely side by side with the OEM filter, and honestly, without having some expensive equipment to measure flow rates and the size of the foam cells with any accuracy, I cannot tell any difference between the two. That is, other than the UNI one being red/yellow, and the OEM one being black, it seems to me that they are equivalent. The OEM one MIGHT have SLIGHTLY coarser outer foam. Maybe.

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post #21 of 34 Old 10-20-2016, 08:40 PM
 
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Checked the Kodiak last weekend. 805 miles zero dust on the intake horn. Got a couple pictures showing how much a shim could compress the gasket. Try to post tomorrow.
Also no smoke on startup.

I've had twin air extra filters for the 700 and the 450 fot a few years. Got to agree not much difference compared to OEM.

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post #22 of 34 Old 10-20-2016, 08:47 PM Thread Starter
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I'm interested in those shim pics. I'll be doing that when I get mine back from the shop.

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post #23 of 34 Old 10-21-2016, 11:30 AM
 
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I'm thinking something like this would work:

Serious 660 air filter mod - Part 2

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post #24 of 34 Old 10-21-2016, 11:31 AM
 
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And another:

Grizzly 660 Air Filter Mod Instructions | High Lifter Forums

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post #25 of 34 Old 10-22-2016, 02:46 PM
 
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Quote:
Originally Posted by BlackGrizz550 View Post
Exactly what I had in mind.

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post #26 of 34 Old 12-12-2016, 06:46 PM
 
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Let's discuss the dust pattern in this air filter pic

So I just bought my Grizzly 10 miles on it so far. Read through this post. Opened my air box to find a dry connection as pictured between the filter and box. I also found the filter oil was an inch deep in the bottom of my air box. I dipped my finger on it and covered the foam with it. I also smeared some on the box side where the gasket ends up. I pulled the filter off the plastic holder and smeared some of this extra filter oil on that connection.

I see the recommendation to buy NoToil, an item I've never seen but what's wrong with using the filter oil? Isnt it designed for this type of application?
Thoughts?

Thanks for pointing out this issue. Ya'll probably saved me a motor!


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post #27 of 34 Old 12-12-2016, 06:56 PM Thread Starter
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Quote:
Originally Posted by cornfedinohio View Post
I see the recommendation to buy NoToil, an item I've never seen but what's wrong with using the filter oil? Isnt it designed for this type of application?
Thoughts?

Thanks for pointing out this issue. Ya'll probably saved me a motor!
The concern about no-toil vs other oils is that petroleum products and solvents may break down the glue that holds the foam ring to the front of the filter holder, and the ring may come off. A couple of people here have reported that their foam rings came off. One said he hadn't even used any petroleum-based oils or solvents on it.

You're welcome, hope yours is problem free!

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post #28 of 34 Old 12-12-2016, 08:43 PM
 
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Is the factory filter oil petroleum based? Do they use NoToil?
Isnt gas and oil petroleum? I think it would be a big mistake on Yamahas part to use a glue or foam that can't be exposed to petroleum in a confined space surrounded by petroleum.


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post #29 of 34 Old 12-12-2016, 08:48 PM Thread Starter
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Quote:
Originally Posted by cornfedinohio View Post
Is the factory filter oil petroleum based? Do they use NoToil?
Isnt gas and oil petroleum? I think it would be a big mistake on Yamahas part to use a glue or foam that can't be exposed to petroleum in a confined space surrounded by petroleum.
I don't know if it is or not. Yamaha does not use No-Toil. Yes, gas and oil are petroleum products. I agree completely.
I am only repeating what someone else said that someone at Yamaha said. Take it with a grain of salt.
But my plan is to use No-Toil, because I like it and have been using it since 2005 anyway on all of my machines with foam filters, and it works well for me. I've soaked that front ring in it, and will just leave it alone - won't even wash it when I wash the filter unless the face of the ring gets dirty in which case it might not seal well. I WANT the outer part of the ring to get plugged up with dirt. I don't want air going through that ring.

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post #30 of 34 Old 12-14-2016, 05:32 PM
 
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how much life do you think this dust take of the motor ??
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