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civic hybrid aero dynamics on a FA5 Si

61K views 119 replies 64 participants last post by  Darius  
#1 · (Edited)
just thought id share something pretty cool that i have been running on my car for a while. i came across this when i did a oil change on a civic hybrid and saw how it cheats the wind, and thought id apply it to my Si. i did have to drill 6 holes to secure some of the clips and cut a hole to allow the K20 oil pan to clear but other than that it fits great.

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EDIT: these are the new hybrid bolts you will need to secure the rear panels together

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compared to the stock Si one.

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10-15-10 edit: the pictures up top highlight a hole that needed to be cut to clear the K20 oil pan. i made a cover out of scrap carbon fiber to clear the oil pan and cover the oil pan.

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#111 · (Edited)
I am finishing up installing the hybrid undercovers on my FA1. There are 4 holes in the body that are too small for the normal clips. So instead of drilling them out, which I didn't want to do, I used some smaller honda clips and they worked great (I think they are clips for the front wiper cowl area). The leading edge of the front engine cover only has 2 of the 4 mounting holes which kinda stinks but is still pretty sturdy.

As for the exhaust melting the engine cover, I think I am going to cut out the plastic near the exhaust and then add a piece of sheet metal to fill in the hole. The metal won't be bothered by the heat.

All in all it went on pretty good. My car is a LX so the only undercover it came with was the one under the trunk. I am curious to see if it helps my mileage. For $40 from the salvage yard and $5 in clips (much cheaper on ebay than from Honda!) I am very happy.

Also, on my engine cover the hinged part of the cover was torn apart about 2/3 of the way. So to fix this I bought 4 little piano hinges and riveted them to the cover. Works great.
 
#113 ·
I need to install the front engine cover on my EX coupe to keep the rabbits out of there. I found some sites that sell it for around $50 (go-parts.com & discountbodyparts.com). I would like to use the same clips that FuntanaS used so that I don't have to do any drilling. Can someone please tell me what's the part number for the clips he used or where I can find them on ebay? Thanks.
 
#114 ·
I think the small holes are actually occupied by 6mm bolts on a hybrid, and probably thread into weld-nuts that are in the chassis. If the non-hybrid body has those weld-nuts in place, then just use the bolts. If not, I think the best solution would be to use rivnuts, but that would involve a little drilling. Otherwise, you might be able to pull off putting loose nuts above the metal for the bolts to drive into.

The bolts around the middle of the panel are basically permanent, but the ones in the front are removed for oil changes, so you would want those nuts to be secure on their own - you don't want to fuss with locating the nuts to reinstall things after every oil change. I don't know if they're close enough to the edge to use a clip-nut. Or you may be able to epoxy a flange nut in place.
 
#115 · (Edited)
I just had a mechanic install the engine cover on my EX coupe (non-hybrid) and they said it fit perfectly. They didn't say they had to do any drilling. The clips used were part number 91506-S9A-A003. The mechanic said they used 10 of them (I'm sure he's lying though, since there's only 9 holes that can fit these clips and I know that 2 aren't used on the top). I got them from here.

https://www.amazon.com/gp/product/B0040CW2A0
 
#117 ·
Guys, I am looking to install the undercarriage covers in my 2008 Civic SI Sedan FA5. The below parts are the ones I think are needed.

Are the part numbers correct to fit my car ?
I have read that some modification is needed for the K20 engine oil pan. Any other thing I should be taking into consideration ?



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