My $20 custom airbox
 

I am in the process of installing my MP62 coldside SC. I figured I would post a few pictures of my $20 custom airbox mod.

I used corregated plastic and 0.5 x 0.5 aluminum angle. The filter is a 7" round x 4" deep K&N that has an offset hole.

The area marked with an "X" in the 1st picture will be cut out of the firewall. I just haven't done it yet.

I should be pulling 99% of my intake air from the high pressure cowl.

Here are some pictures...

http://tidewatersportscarclub.com/SHAWN/AB1.jpg

http://tidewatersportscarclub.com/SHAWN/AB2.jpg

http://tidewatersportscarclub.com/SHAWN/AB3.jpg

http://tidewatersportscarclub.com/SHAWN/AB4.jpg

http://tidewatersportscarclub.com/SHAWN/AB5.jpg

http://tidewatersportscarclub.com/SHAWN/AB6.jpg

http://tidewatersportscarclub.com/SHAWN/AB7.jpg

Nice work!

Damn that is nice work. Good job!

Wow, that's perfect - and easy for the blower. Though I think that's the wrong filter for the box. You need something that keeps that hole open - like a domed foam filter or smaller gauze. I just wouldn't want the filter covering the hole, or you're going to only use about 20% of the filter which will be restrictive (not to mention get dirty quick).

How much does your engine rock? Make sure to allow for this.

The hole in the box is oblonged to compensate for engine rock. I hope its enough. I am running stiffer mounts so hopefully it will be enough clearance. If not, I have a razor knife and I'm not scared to use it.

Cupcar,
I will re-evalute the filter situation once I get the car together and running. The hole in the firewall is above the filter, so I don't think I will have an issue. Only time will tell.

after you cut that hole through the firewall, be sure to post pics on miata.net under "check out what I did to my sunburst" :)
They'll trip.

:rofl: ^

yeah- I see now, it's under that seam.

The pansy purists will have a cow. I will have to do it.

LOL! you guys are cruel.. and i love it

great work btw! is that the FFS setup? i always wondered why the filter was wrapped around under the car...

cause this would be impossible to do with A/C and ABS.

There will be complete genocide,let alone the heart attacks.

I think it "could" work with AC, no chance with ABS. Being that my AC has been gone for years, I was never able to experiment with that.

Yes this is a FFS somewhat custom kit.

nice work. wanted something like that for my current turbo build but the cowl is just too far back from the turbo inlet.

oh yeah, those pesky little devices...

Very nice!

Put a FM sticker on it and they will think you are a GOD :eek:

I did something similar to my first Sunburst, only on the other side of the engine....and yes there were a number of people that thought I was mad. Hasn't stopped me from thinking of doing it again for my DIY setup with my current sunburst, and there is only 55 of that model down under.

J

looks nice

I cut Tom's BRG headlight lid without even thinking. I believe a few people commented about it, then i thought how fucking lame, it's a miata, regardless of the color/trim. a starburst yellow isn't going to drop any panties, therefore, it's ok to cut up and abuse.

I always get this slight "twinge" before cutting into the car. Usually lasts about 5 seconds before I say "eff'it", and start cutting. ;) PS: nice job on the filter setup!

Cheers,

Jeff

yeah I understand the feeling. It took about 6 beers and a half hour of staring at my fenders before I got the nerve up to make the cuts for the flares.

:rofl:

airbox looks great!

I'm not trying to make you spend more than $20, but when you finish you might want to take it to someone and see what it would cost to get an aluminum or stainless box made.

Yeah, this is from the guy who uses an old plastic clipboard for a control panel:

http://www.lightweightmiata.com/rewire/rewire38.JPG

If I am going to pay somebody to make it for me, it's going to be formed out of ABS, not aluminum or steel. I'm trying to reflect the heat not absorb it.

I have the box modeled in 3D using the sheet metal tool of my software. I sent the flat pattern over to my fab shop to have him punch the pattern out of a piece of ABS. I was then going to add some heat and make the bends myself. But, my fab shop is behind and wouldn't be able to get to it till after the 1st of the year. I didn't have the patience to wait that long.

If this one doesn't hold up, maybe I'll pursue the ABS version again.

ABS never occurred to me because most of us don't have a way to get that done in ABS. I hate you bastards that have 3D software, fab shops, and stuff like that while the rest of us are scrounging for scrap metal on the side of the road! <G>