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Central Air Filter IDF's

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landfall Officially Full-On Dubber

290 posts · joined Jun 2014 ·

#1030155
After asking here for some ideas I eventually decided to make a central air filter using easily obtained items, the main component, the air filter I obtained from eBay.

The air filter has 3" dia. intake and outlet which I reduced to 2" by using the silicone reducing hose also purchased from eBay. The other materials were 1.2mm flat and 2" exhaust pipe.

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landfall Officially Full-On Dubber

290 posts · joined Jun 2014 ·

#1030156
Because I was concerned about air flow into a 90degree change of direction I widened the entry point in the exhaust pipe. The flexible hose is the same as the hose supplying the air to the heat exchangers from the fan housing.

I also increased the height of the inlet box to 110mm for better velocity into carbs. To facilitate better sound proofing I also covered the housings with 10mm sound proofing with foil backing then applied carbon fibre wrap to the housings and pipe.

The difference was way beyond my expectations. Sounds like a standard Beetle now. Can actually talk to each other and listen to music.

The assembly is held in place by brackets attached to rivnuts in the fan housing.

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grumble Son of Jim - Creator of Good

2,672 posts · joined Jun 2008 ·

#1030159
That is impressive as you said the intake noise is normally horrendous and a stereo is wasted unless you play the "poor people doof doof music" and just feel the vibrations.

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#1030160
Yep - impressive
Futue te ipsum!!!

modnrod Fahrvergnugen

978 posts · joined Mar 2011 ·

#1030167
We really need a like button........
👍

sander288 "Bolt-on Master"

1,404 posts · joined Aug 2008 ·

#1030168
Awesome!

Love the carbon wrap over it too!
BMW R65 LS
1967 1300 Deluxe
Swing-axles FTW ❗

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#1030172
well done Greg, looks great

landfall Officially Full-On Dubber

290 posts · joined Jun 2014 ·

#1030173
1303Steve wrote:well done Greg, looks great
Greg???

Didn't realize my late mother renamed me, I've been Ken for 71 years.
hahahahaha thanks for the compliment though.

Cheers

Incidentally, I wrapped it in carbon to hide my very ordinary welding skills.

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#1030183
sorry thought you were somebody else

hulbyw Insano Dub Head

819 posts · joined Sep 2009 ·

#1030188
Great job!!