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View Full Version : DIY front underpanel/bellypan



rougeben83
08-10-2008, 12:44 AM
Problem: I couldn't use my old skidplate after swapping so the underside of the enginebay was pretty much left exposed...not only is it more vunerable to small debris and such, but I'm guessing it wasn't helping air flow underneath the car having all those structures left hanging freely in the path of the air.

On top of that, I wrapped my stock manifolds, so I wasn't looking forward to seeing what direct contact with salt will do to them during the winter.

Experiment:I got some sheetmetal (actually, it's HVAC ductwork from Home Depot :lol: ) and bent/cut up a bellypan/underpanel. I made some brackets and spacers and bolted it in place in 6 places. The sheetmetal I got was also big enough to cover the gap in between the front bumper and the FMIC, so I suppose it's helping direct more air through it rather than underneath it.

Results:Does it work? It's not as tough as the 3/32" thick aluminum plate I used to have, but at least there's something equivalent to the old plastic splashguards under there. I noticed less wind noise while on the highway, but as far as actually doing some work to help with downforce...who knows.

For $20 and about 4 hours of my time dicking around under the car it looks pretty good. I think it's worth it just for the placebo effect :lol:

https://sl-i.net/FORUM/images/imported/2008/08/P1060702-1.jpg

Airgne
08-10-2008, 12:53 AM
hmm not bad. nice job. isnt this in the wrong section?

dodik
08-11-2008, 09:36 AM
do you have to take it off for every oil change???

rougeben83
08-12-2008, 10:46 PM
do you have to take it off for every oil change???

Yup, pretty much. Though I guess I got used to that already. I think I can get this off and change the oil without having to jack up the car like before though :grin:

Airgne
08-12-2008, 11:32 PM
id be ok with that since my oil change is 25,000miles or 1 yr.

MkIII
08-13-2008, 12:05 AM
do you have to take it off for every oil change???

I have an aluminum skid plate that must be removed for each oil change and I worried it would end up being a PITA, but that's easily made up for by how stinking easy it was to change the oil.

Nice work on the home made job! :grin:

wagonofdoom
08-13-2008, 04:04 AM
of you guys can be super creative

get yourslef hte Nutrivets
and some bolts
and a piece of metal
cut out where your oil pan bolt is, and put the plate over the hole with teh two bolts and nutserts