Barn Door for JK factory hardtops

jscherb

Expedition Leader
I've been asked a number of times whether the flat fenders have more tire clearance than the factory fenders. Here's a pair of photos taken at different times but from pretty much the same angle that shows the difference. You can see that the bottom of the flat fender is roughly at the center of the headlight/bottom of the top door hinge, and the bottom of the factory fender is near the bottom of the headlight/more near the center of the two door hinges.

FenderCompare_zpss7pcusxg.jpg


There are a few reasons for this... first the flat fender is actually flat and level, while the factory fender slopes about an inch and a half from the body to the edge of the fender. And, the vertical face of the flat fender is about 1 5/8" tall, while the vertical face of the factory fender is just under 3" tall. The combined result of those differences is roughly 3", but I can measure it exactly as I do the next install.

Or, looking at the same math another way, the flat fenders have pretty much the same clearance as if the factory fenders had the entire vertical face trimmed off.
 

jscherb

Expedition Leader
Fiberglass parts always stay in the mold to cure overnight, so the first thing to do the next morning is to take the part out of the mold. I've never done a video of that process so I thought some might be interested in seeing it happen.

Since these are two part molds, the first step is to remove all of the bolts holding the two parts of the mold together. Then the first part of the mold is removed, and after that the part almost falls out of the other half of the mold...


The part has mold release on it that has to be washed off (this mold release is water soluble), and the edges have to be trimmed. Also since the fender was made in a two-part mold, there's a bit of flash at the parting line that gets sanded off and buffed. I'll do all of that today, photos to come.
 

jscherb

Expedition Leader
Trimming the fenders starts with a gauge block to mark the trim line. I put tape on the fender because the line will be hard to see on the black fiberglass.

Trimming1_zpshvc9milp.jpg


Preliminary trimming. I'll do the final trimming when I install them on the Jeep:

Trimming2_zpshimyeoiw.jpg


Trimming3_zpsubez7xo4.jpg


Since I molded the mounting flange on factory fenders, there are witness marks showing exactly where to drill the mounting holes. For accuracy, I always drill a small pilot hole first.

Drilling1_zps2hsxmdpx.jpg


I made up a template for drilling for the marker lights. I'm using CJ markers, but I also made the template for YJ markers.

Drilling4_zpsb6yok5kq.jpg


Drilling5_zpsxnsnx3sx.jpg


On the underside of the fenders I molded in lugs to zip-tie the marker light wiring out of harm's way.

WiringLugs_zpskiaklqfm.jpg


Next I'll wash off most of the mold release and test fit them.
 

jscherb

Expedition Leader
A flat fender bolted up to check the fit. I hadn't washed all the mold release at the point these photos were taken.

Testfit1_zpsklqesmqq.jpg


I also haven't trimmed the front gusset yet, I'll do that when I do the install on the Jeep.

Testfit2_zpscjnlhkjd.jpg


Testfit3_zpsr0jq3gyh.jpg


Testfit4_zpsjahifrmw.jpg


Testfit5_zpslsvfp0gk.jpg


After test-fitting, I cleaned the rest of the mold release off, removed the flash at the mold joint and buffed where I removed the flash. I'll do a little more buffing after installation and final trimming, but they're not looking too bad at this point.

MoldReleaseOff_zps5ubor5ey.jpg
 
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jscherb

Expedition Leader
More pictures of the flat fenders.

Installed5_zps0ima0xfa.jpg


Installed6_zpsnmbjv4fq.jpg


Installed7_zpsr6f1rvhn.jpg


The marker light is illuminated in this next photo although it's a little hard to tell because it's daylight. The fenders are designed to accept '72-'86 CJ marker lights or '87-'95 YJ marker lights, but any other light that's a good size could be installed. I used CJ markers on these.

InstalledMarkerlight_zpsuyoa2bwx.jpg
 
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jscherb

Expedition Leader
And finally, almost everything I design and build gets the 225-lb. gorilla test, and these fenders are no exception...

InstalledGorilla_zpsrxs6y1jq.jpg
 
One more test you might need to check.. to see if there any fender flap or shake while driving.. The last time I had a 63 Bug.. I mounted those Baja fenders on the front and they flapped almost like wings.. purely made from an inferior material.. unlike your flats.
 

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