Foam Air Filter/Air Box For MX

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johnu
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Foam Air Filter/Air Box For MX

Post by johnu »

I've just been reading some of the air filter threads but still not sure what I'm going to use on the MX race bike I'm building. I would like to use an oiled foam filter as that is what I am use to using on my modern mxer's. I am boxing in the center triangle area where the battery would be with aluminum sheet. It will not be totally sealed but pretty close. Hard part is finding a boot to go from the carb into the ally box. Has anyone done anything like this. I've seen the original BSA set up with the paper filter.
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Re: Foam Air Filter/Air Box For MX

Post by beat »

I am using the Boost Products silicone hoses. good stuff, many different sizes
45° angle, reducer hose
45° angle, reducer hose
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Re: Foam Air Filter/Air Box For MX

Post by Momus »

Have a look at a boot from a single shock bike. Most of them will have an offset and a mouth the right diameter. They tend to be fairly long but are a good start.
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Re: Foam Air Filter/Air Box For MX

Post by minetymenace »

PES make a fibreglass "V" that fits within the frame, it is plumbed for an oily foam air filter and has a recess for the battery. Best email or call Anita.
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Re: Foam Air Filter/Air Box For MX

Post by twinshocker »

I made an aluminium air filter box on my 76 CCM and used a "slip on" type Twin Air filter which has the rubber directly on the foam.
Advantage: You just need a hole in front for the rubber which has not to be airtight as the rubber mounts directly onto the carb.

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twinshocker
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Re: Foam Air Filter/Air Box For MX

Post by twinshocker »

This type of filter:

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Grouty
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Re: Foam Air Filter/Air Box For MX

Post by Grouty »

This is the PES filter box fitted to my CCM.

https://photos.google.com/share/AF1QipM ... M4R2IyNmNR
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Re: Foam Air Filter/Air Box For MX

Post by Grouty »

johnu
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Re: Foam Air Filter/Air Box For MX

Post by johnu »

Thanks everyone, good replies and info. Exactly what I was looking for :thumb
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