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Old 03-13-2014, 10:02 AM   #1
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Are there supposed to be drain holes?

So I bought this 2004 wrangler TJ recently and I noticed a drilled hole on the underside of the frame. This hole has the same chalk board texture paint as the rest of the frame so it looks like the hole was there since the car rolled out of the factory, but I am not sure. Are TJs from this year normally have a drain hole on the underside of the frame?

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Old 03-13-2014, 04:26 PM   #2
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I'm relatively new to jeeps as well and I could be wrong but I'm pretty sure they don't come with those drain holes. But, it is very common for owners to drill these holes because there is no other useful drainage from the frame.

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Old 03-13-2014, 04:28 PM   #3
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From the factory, there were no holes in the bottom of the frame. Adding them is a good idea IMO. I usually drill them at the front and rear control arm mounts. Those locations are pretty much at the lowest point.

I dont what you mean by chalk board paint either. The frames were semi gloss black from the factory.
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Old 03-13-2014, 04:40 PM   #4
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As mentioned above these did not come from the factory. This was one of the biggest flaws with our tjs is the boxed frame with no drainage leading to rusting from the inside out. The most common rust areas are where the skid plate bolts to the frame and at the bend where the rear lower control arm mounts, right in front of the rear tire. Take a look in this area, up through the mount as well and there is likely a hole there as well. When owners add drains it is usually in this spot and at the front lower ca mount that you found. As for the chalkboard type paint I am betting it is some type of rubberized undercoating or truck bed liner.
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Old 05-10-2014, 10:27 PM   #5
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I just added a holes to each frame rail of my 97 Sahara. I couldn't stand it anymore knowing the water just sits in there for days. I cleaned my frame out 5 days ago to prepare to use Eastwood internal frame coating. 5 days later when I went to do the coating, I checked inside the frame and it was still full of water. That's when I busted out the drill. Now I'll wait for the frame to dry out completely now that it can drain, and then I'll coat it. Here's the video and you can see just how much water still stays in the frame:
Drill holes in frame of 1997 Jeep Wrangler TJ - YouTube
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Old 05-11-2014, 12:49 AM   #6
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Drilled 3/8 inch drain holes in my 2005 TJ the day I purchased it. Fortunately is was a southeast jeep and zero rust underneath or in the rails. After a thorough rail rinse and a few days to make sure completely dry, used the Eastwood internal frame coating. Should be good to go for many years.
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Old 05-11-2014, 12:54 AM   #7
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How'd you guys clean your frame out? Been thinking about how to do it because I have some big flakes in there.
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Old 05-11-2014, 01:00 AM   #8
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Quote:
Originally Posted by Bet View Post
How'd you guys clean your frame out? Been thinking about how to do it because I have some big flakes in there.
X2 I've been wondering how to do this too. Also, with the internal coating, does it also stop and change the rust that's already there to something that won't continue to rot or what? I have a friend that works at an old car lot and he uses a coating the stops the rust and then 'changes' it (for lack of a better word) into something that's not harmful.
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Old 05-12-2014, 12:36 AM   #9
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In my 97 Sahara, I drilled 1/2 holes in the bottom of the rails at lowest points (one front and one back on each side). Used a pressure washer via the factory side holes in the frame rails that took care of most of the loose rust. Then used a compressor to blow out the balance. The internal coating will (transform) the rust preventing further deterioration. Touched everything up with rustoleum truck bed liner. Turned out great.
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Old 05-12-2014, 01:02 PM   #10
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Quote:
Originally Posted by bhamtyme View Post
In my 97 Sahara, I drilled 1/2 holes in the bottom of the rails at lowest points (one front and one back on each side). Used a pressure washer via the factory side holes in the frame rails that took care of most of the loose rust. Then used a compressor to blow out the balance. The internal coating will (transform) the rust preventing further deterioration. Touched everything up with rustoleum truck bed liner. Turned out great.
How much is the treatment stuff?
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Old 05-12-2014, 01:54 PM   #11
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http://www.eastwood.com/internal-fra...nozzle-qt.html

Still not sure how to get the larger flakes out, but that's what I'll be using once I've got it pretty cleared out.
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Old 05-12-2014, 03:43 PM   #12
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How'd you guys clean your frame out? Been thinking about how to do it because I have some big flakes in there.
I used a shop vac and then I had some smaller hose (Im guessing 1" or less") I had a reducer and was able to connect it to the shop vac and used duct tape to seal it good on the shop vac hose. I then fed the smaller hose through all the frame holes up and down and sucked everything out of there.

After that, I flushed with a hose and also drilled a hole in the low spot of the frame by the rear LCA because as we all know, the water just sits in our frames unless we make our own holes.

Drill holes in frame of 1997 Jeep Wrangler TJ - YouTube

After a couple of days of drying out. I used por15 on the outside and Eastwood internal frame coating on the inside

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