Author Topic: Air filter box  (Read 9888 times)

scottpayne73

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Air filter box
« on: May 03, 2009, 09:18:09 pm »
Maybe someone can answer this. The used engine I bought had tape on the bottom of the air filter box to cover up the holes. Is this required, or can I put some kind of screen there to keep the trash out? I would like to keep the air flow. Anything will help.




Offline bandostuff.com

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Re: Air filter box
« Reply #1 on: May 04, 2009, 12:10:20 pm »
Are we talking about a Bando?  If so the hole must be plugged.  Older engines used a metal plug but newer ones just use a piece of tape....high tech!
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Offline justfreaky

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Re: Air filter box
« Reply #2 on: May 04, 2009, 03:23:45 pm »
Ed,

Why would the holes need to be covered? I would think that it would help increase air flow if they were uncovered.

Steve
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bandow10

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Re: Air filter box
« Reply #3 on: May 04, 2009, 05:52:26 pm »
does it make a difference if the holes are not plugged? just got a new engine aa few weeks back and they are not taped.

Offline 3nracing97

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Re: Air filter box
« Reply #4 on: May 04, 2009, 06:47:11 pm »
None of my motors were covered either.


Offline Bando9

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Re: Air filter box
« Reply #5 on: May 04, 2009, 10:04:00 pm »
my motor is also not covered i have a screen

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Offline bandostuff.com

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Re: Air filter box
« Reply #6 on: May 05, 2009, 12:21:32 am »
Are we all talking about a single hole, about 5/8" dia. to the rear of the carb?  Not the large (1 1/2" holes in the corners of the underside of the housing.  The single small  hole would allow unfiltered, unrestricted  air through a passage in the air cleaner housing base directly to the carb inlet.  The tech inspectors check the air filter elements for holes,  as well as the  foam element is in place .  This  leads me to beieve direct unrestricted air bypassing the filter would not be allowed.

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Offline mch46

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Re: Air filter box
« Reply #7 on: May 05, 2009, 09:16:56 am »
On OEM engines for service in the field, this hole was where a tube from the crankcase breather connected back to the carb air filter box.  Some engines sold by 600 used to come with a platic plug in this hole, some did not.  Engines from 600 now come either with the hole open or with duck tape covering the hole.  Pursuant to my conversation with Scott Rhinehardt at INEX yesterday, competitors may now run the engines with the plug or tape, or without any plug or tape.  It is optional for the competitor to choose.


Offline justfreaky

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Re: Air filter box
« Reply #8 on: May 05, 2009, 11:30:37 am »
Thanks Ed and Mike!
That is interesting to know.

Regards,

Steve
Better to be hated for who you are, Than to be loved for who you are not.

Offline bandostuff.com

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Re: Air filter box
« Reply #9 on: May 05, 2009, 01:22:41 pm »
Thanks for your research Mike.  Scott Rinehardt is the ultimate power on these issues!
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scottpayne73

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Re: Air filter box
« Reply #10 on: May 06, 2009, 06:37:47 pm »
I am speaking of the 1 1/2" holes in the corners of the lower housing. Is it best to put some kind of screen there?

Offline bandostuff.com

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Re: Air filter box
« Reply #11 on: May 06, 2009, 09:17:19 pm »
Any debris that may get through will be stopped by the foam filter and then the paper filter.  A screen might be over-kill unless you're racing on dirt.
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