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rallyxPOS13
06-01-2010, 07:57 PM
I've done this for every car I own, it's cheap insurance. Here's a rundown on what I did for my bugeye WRX:

Materials:
Cardboard
Aluminum/HPDE/etc.
(5) M8x1.25 bolts of sufficient length
(10) Large fender washers to fit bolt head
(5) lock washers
(many) nylon washers
(5) or (10) rubber washers

Tools:
Marker for template
Cutting device (cutoff wheel, jig-saw, sawzall, dremel, shears, etc.)
Drill (for holes)
Sheet Metal brake (or hammer, angle iron, and C-Clamps)


Procedure:

I made a quick cardboard template. Mark the center of the piece, and center it up on your car. Mark the cuts to make to clear the control arms. Mark the three holes along the front, and the two near the center of the front subframe. If you miss a hole, it's not the end of the world, and your skidplate might need some tweaking. Bend up the front edge. Bolt it to the car to make sure it fits:
http://lh5.ggpht.com/_acc8fVEpfBY/SwBcftHefhI/AAAAAAAAFJU/7PO69qImG5Q/s800/100_2964.JPG

Now, transfer your holes and lines to the skidplate. Then,cut the angles with a cutoff wheel. Drill out the mounting holes. Oversize them, as positioning isn't critical, and you'll likely need the freedom to mount it. Then bend up the front lip. I did this by setting the bend line in a large piece of angle iron, and whacking the crap out of it with bodywork hammer till it formed a bend line, then I achieved the proper angle with a 4lb mini-sledge. (I like hammers :twisted: )

http://lh3.ggpht.com/_acc8fVEpfBY/SwBciB4mJoI/AAAAAAAAFJc/lMfzBpV8bgU/s800/100_2966.JPG

http://lh6.ggpht.com/_acc8fVEpfBY/SwBcecOE_8I/AAAAAAAAFJQ/oais1uQoc14/s800/100_2963.JPG

Test fit your skidplate.

I attached mine with with stainless hardware so that it won't rust. I also used button head allen bolts, so that they wouldn't catch on anything under the car. I used nylon washers to space my skidplate down to add some more clearance for the oilpan/exhaust. I chose nylon to absorb some slight vibration, compress slightly, and it won't rust. I used rubber washers to again isolate the vibrations of the skidplate. My stack up went like this:

Bottom of car
Rubber washer (x2)
Nylon washer (x3)
Fender Washer
Skidplate
Fender Washer
Lock washer
Bolt head


Disclaimer:

I obviously don't condone stealing street signs, the sign above was bought at a flea market for ~$5, seemed a little under 1/4" thick, and is perfectly sized for most cars.

Results:

The skidplate on my WRX has made it up Pikes Peak, Survived Marshaling 100AW, and taken everything else I could throw at it in daily driving without taking any damage.

I had one of similar manufacture on my lowered 240SX. While marshalling at 100AW rally, I came hauling down the road after the stage had re-opened, and one of the rally cars had swept a small boulder onto the road. The car in front of me hit it, and it came rolling under my car, punched a 3" hole about 1" in front of my oil pan. If I didn't have the skidplate, my car would have bled out on some rural road in the middle of the Ozarks. $5 is cheap insurance!

http://sphotos.ak.fbcdn.net/photos-ak-sf2p/v67/192/123/15926474/n15926474_34171687_2373.jpg

-Matt

TunedAlready02
06-01-2010, 08:37 PM
DUDE :shock: epic skidplate is epic :lol:

http://lh6.ggpht.com/_acc8fVEpfBY/SwBcecOE_8I/AAAAAAAAFJQ/oais1uQoc14/s800/100_2963.JPG

WRXNFX
06-01-2010, 09:56 PM
My STi is low, I beat the crap out of my skid plate.. :)

Good DIY.

rookrex
06-01-2010, 10:57 PM
I might have to do this. Looks like I'm headed to the flea market!! :twisted:

ElScooby
06-02-2010, 02:32 PM
This is great!

Awesome choice of sign as well.

20sti05
08-12-2010, 03:32 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

DanC
08-12-2010, 04:58 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

Same here, all I see is "Image".

20sti05
08-12-2010, 09:17 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

Same here, all I see is "Image".



ditto

WRXNFX
08-12-2010, 10:05 PM
i dont know why but i cant see the three pictures under the Procedure part. did they get taken off?

Same here, all I see is "Image".



ditto

That sucks, the skid plte was made out of a loose gravel sign.

Twizted05
12-04-2011, 07:25 PM
Anyone know a company that manufatures skid plates??? and ball park price on them?

Boorah
12-04-2011, 08:09 PM
https://www.rallyinnovations.com/all_products.php

VF34RX
12-06-2011, 12:43 PM
Pics need to be rehosted to a better location.

WRXNFX
12-07-2011, 07:22 PM
Carbing, $307.

http://www.flatironstuning.com/p-728-carbing-under-panel-for-the-2002-2005-subaru-wrx-and-sti.aspx

I have had one for a couple years..

jh_05STi
12-19-2011, 09:01 PM
I got my rallyarmor one for like 200 and i love it.

ryanschram
02-13-2012, 07:36 PM
this DIY would be much better if the pics still worked.

rallyxPOS13
02-17-2012, 05:46 PM
this DIY would be much better if the pics still worked.

Man, you kids are needy! :-)

The internet changes a lot in 2 years...

https://plus.google.com/photos/111208236774832120264/albums/5372879807520281937?authkey=CL6v8rfs_bOfywE

if you don't want to DIY, here's some of the best on the market: http://www.get-primitive.com/

fishawrx
01-19-2013, 12:48 AM
Thanks for the write up! Mine turned out pretty clean
http://i298.photobucket.com/albums/mm265/fishafisha/IMG_1313_zps0bbdebcd.jpg

Kevlar_07
01-22-2013, 11:58 PM
I like the idea what size signs are you guys using 24x24, 36x36? I'm looking to do this with my 08 obs

fishawrx
01-23-2013, 08:51 AM
mine was a 30x30. That left about a half inch down the left and right side and I had to trim where the subframe angled in. Also stopped short of my H brace by about 1/16 of an inch, so very little trimming involved on mine.

WrxLULZ
03-05-2013, 05:07 PM
http://forums.nasioc.com/forums/showthread.php?t=2438011

ForrestGreen
07-15-2014, 07:29 PM
Nice write up