How to: mold a body kit
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My dad bought a crappy Nismo replica back when he was fixing his car. The fitment was horrible, so we put it up in the barn. Well I decided to do a little something with it. I'm going to mold the rear into the bumper cover. The flares on the side skirt will be cut off and molded onto the stock skirts. The fitment was so bad that there was almost no way to get it to look right by fitting the skirt. This will make it stronger than a regular FPR skirt, since it has the urethane backing. I'm not even going to mess with the front bumper cover. It would be a waste of my time to fit it and have it break the first time out. I'll probably pick up a V1 replica from Evo-r. I'll also be adding a G spoiler.
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Next you will position the flare on the cover where it needs to go. Use some tape to mark the edge of the flare. You will need to allow an extra half inch or so. You'll see why later.
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Here's where the tape comes into play. You will need to sand down the area that the adhesive will bond to. The adhesive I used recommended 80 grit, but I went ahead and used 36 since I'll be putting some kitty hair on it to get the mold smooth anyway. Also make sure you go down to the urethane. The adhesive will bond a lot better to that than paint. The reason I didn't go all the way through in the middle is because the adhesive probably won't seap that far down, but if it does sanding it will give it a little something to bite to. Also wipe the area down with a pre paint cleaner before you try to bond the flare. I use PPG Acryli-Clean.
Last edited by 03Zilverstone; Mar 1, 2007 at 12:45 PM.
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Now you'll start to bond the flare to the cover. You'll want to do a section at a time, since the flare won't fit perfect against the bumper cover. I found it best to start at the fender well area. Be sure to hold the flare in place until the adhesive gets hard. Also don't rely on tape. I just put that on there as extra precaution after I held it until I felt it was hard enough.
Last edited by 03Zilverstone; Mar 1, 2007 at 12:49 PM.
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Clean the rocker and flare edge and start bonding it doing about a foot at a time. Be sure one section fully hardens before moving on. I found it best to start at the top front.
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When done with the top and ends remove the rocker moulding. Now you can bond the bottom section. Because of the excellent fitment of these replicas I have an inch gap in the middle of the bottom side. That will be taken care of later with a little fiberglass mat and resin.


