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Old 11-20-2011, 11:04 AM   #1 (permalink)
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YJ to CJ conversion

Looking for some information on changing to the CJ hood and grill. What needs to be done? I'm a new jeep owner and am looking to change it over. Is it hard to do? Can the TJ hood and grill be fit?
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Old 11-20-2011, 05:01 PM   #2 (permalink)
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Square headlights are better.
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Old 11-20-2011, 07:18 PM   #3 (permalink)
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Something like this:



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Last edited by mikesimpson; 11-20-2011 at 07:20 PM.
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Old 11-20-2011, 09:10 PM   #4 (permalink)
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The CJ swap appears to be a pretty straight forward deal with a few specific little tricks. If you Google it you'll find several write ups. From what I've seen the TJ hood doesn't quite line up correctly at the cowl - hood sits up a little too high.

I too have a YJ and would like to do the CJ hood/grille swap (I expect to hear more crap about keeping the square head lights, blah, blah - please save it ).

Anyway, I have Gen Right front tube fenders (YJ) and I'm hoping someone can tell me if they'll even come close to working with the CJ hood/grille - with some massaging & tweaking or am I better off starting over on the fenders?

How easily did the stock fenders mate with the CJ grille on the YJ in the photos above? Looks like they lined up pretty good.

Thanks in advance to anyone that can help.

Last edited by BAJA!AB; 11-20-2011 at 09:31 PM. Reason: Typo
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Old 11-21-2011, 07:27 AM   #5 (permalink)
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Learn to use Google Newb.
http://lmgtfy.com/?q=YJ+to+CJ+conversion+

All of the information below came from searching.

The CJ hood is shorter than a YJ (you can see how the bolt holes to mount the fenders to the grill don't line up in the side photo above)

The CJ grill is taller than a YJ so you either have to run a body lift, cut the CJ grill height down, trim the CJ grill so that you can sink it between the YJ frame rails (see above).


The stock YJ lower grill support wont line up due to the two previously mentioned differences so you will have to rework the mount.
Because of the difference in relative grill placement, if you use YJ fenders you will have to pull them in a pinch to get them to line up with the hood.

I have started colelcting parts to do this swap, so I will consolidate what I have found.

http://www.jeepforum.com/forum/f12/c...s-pics-431224/



http://4bangerjp.com/forums/index.php/topic,6986.0.html



http://www.jeepsunlimited.com/forums...d.php?t=484474


http://www.jpmagazine.com/techarticl..._cj/index.html


http://www.wranglerforum.com/f8/cj-g...my-yj-168.html


http://www.pirate4x4.com/forum/showt...=565292&page=2

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Old 11-21-2011, 07:50 AM   #6 (permalink)
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why not just change the whole front in, hood, grill and fenders, if the tubs are basically the same then the cj front end should work
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Old 11-21-2011, 11:33 AM   #7 (permalink)
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Quote:
Originally Posted by brownbagg View Post
why not just change the whole front in, hood, grill and fenders, if the tubs are basically the same then the cj front end should work
That is the easiest way to do it. The YJ fenders and hood are about 3/4 to 1" longer. So adjusting for the mount underneath the grill the really the only thing to do besides bolt it all on.
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Old 11-21-2011, 12:47 PM   #8 (permalink)
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Quote:
Originally Posted by jsmith7364 View Post
That is the easiest way to do it. The YJ fenders and hood are about 3/4 to 1" longer. So adjusting for the mount underneath the grill the really the only thing to do besides bolt it all on.
It is not impossible, but it is not a simple bolt on job. The grill height, steering box clearance, and radiator support needs to be addressed with something more than a wrench.

Quote:
http://www.jpmagazine.com/techarticl..._cj/index.html


With the YJ sheetmetal completely stripped, it's time to mount the fenders. Despite their similarities, the CJ fenders are about 1-inch wider on the inside than the YJ parts, so they hit the framerails unless some trimming is done.


We used an air nibbler and a small cutoff wheel to make short work of the trimming job. You don't need to remove quite as much material as we did, but even this moderate cut job will give us slightly better cooling and easier access to the fender-to-tub bolts from underneath.


Here's the resulting clearance from our sheetmetal trimming. If you frequent mud you may want to leave a bit more metal behind the tire area, but we noticed no decrease in fender rigidity resulting from our trim job.


Regarding the radiator, the Wrangler unit tucks right inside the CJ grille's recess. You'll need to make brackets from two 15-inch long pieces of 1-to-2-inch strap steel or angle iron to mount the Wrangler radiator inside the CJ grille. You can either tack weld the brackets to the CJ grille, or there's enough meat to bolt them on using some small 1/4-inch bolts


With the fenders loosely bolted up, we test-fit the grille. Our YJ has a manual steering box, but some major sheetmetal trimming of the CJ grille will be required if the vehicle is equipped with power steering. The steering box pressure and return lines will need to go right where the author's grimy finger is pointing, so don't put the cutoff wheel away too quickly.


There are a couple ways you could address the YJ's frame mount for the grille. Ideally, you'd cut it off and extend it 1-2 inches and drop it 1 1/2 inches. Or, if you're running a 1-inch body lift you could omit the lift puck from the grille mount and use some scrap steel to extend the YJ mount.


Even with the YJ mount lowered, the CJ grille won't drop between the framerails far enough to prevent a big gap and this ugly misalignment of body panels. You'll need to trim a slight amount off the lower corners of the grille to allow it to drop between the framerails, pulling the fenders and hood gaps into alignment.


In the grand scheme of things, converting the YJ front clip to CJ parts isn't a hard project. You don't even really need a welder, but the finished results will be a lot better if you cut and weld the grille mount on the frame. And although we chose to work in steel, don't discount the many fiberglass options you can check out at 4wd.com.





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Old 11-29-2011, 09:18 PM   #9 (permalink)
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Thanks for all the input...will learn how to use this google thing you speak of.
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