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Old 01-01-2011, 08:17 PM   #1
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Rust on the bottom of Jeep

I am looking to buy a new Jeep (2004-2006 Rubicon Unlimited) and I found one that I REALLY liked: low miles, perfect exterior and interior, etc...BUT THE BOTTOM OF THE JEEP HAS RUST. The driveshaft, the axles, boots all have a considereable amount of it. The body and surface of the Jeep do not have any at all though. I live in Cali, but never had any car with any rust issue. I am not sure if it is worth buying? Anybody have any suggestions? Experience? Opinions..Thanks I appreciate it.

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Old 01-01-2011, 08:32 PM   #2
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Here are some pictures

Here are some pictures.... Attached...what do you think??
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Old 01-01-2011, 08:37 PM   #3
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Another pic

another pic
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Old 01-01-2011, 08:42 PM   #4
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The only thing I'm concerned about...why is their so much rust on those components yet the tub and everything else looks FLAWLESS...?

That kind of rust doesn't look like too big of a deal though
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Old 01-01-2011, 08:44 PM   #5
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IMO, that is one clean undercarriage. As long as there is no surface rust/rot on the body or paint bubbles body wise...your good to go. All the running gear is of heavy steel and iron and will get surface rust over time (what you have in your pics). Hell, you still have the factory stickers on items underneath. Gets my green light for a decent vehicle...especially the pic of the driveshaft showing how clean the tub is underneath. I live in the rust-land in PA, and I would kill to have a jeep that clean underneath...
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Old 01-01-2011, 09:04 PM   #6
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Thanks

Thanks for the opinions. Yeah, the driveshaft is no big deal; its the components on the axles, near the tires, and differential that concerned me a bit. The jeed is an 06 with 20K miles on it. The guy who showed it to me says it's his bosses jeep (a woman) who has never took it off road--and it shows when you look at the tub and rest of the car. The guy seemed a little weird though, any chance that the components came from a different Jeep (since the rest of the Jeep is sooo clean)?? How can I be sure that these are DANA 44s? (I called Chrystler, gave them vin number, and they said that this Jeep came with both front and back). Sorry but I am a little paranoid about making a big purchase....
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Old 01-01-2011, 09:17 PM   #7
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Front looks like a D30...here is a quick link to do a visual check on different axles. If you can match yours up by visual, it will help for quick reference. Axle Identification Chart
I would ask if it came from the beach area or not. Just looks like the undercarriage was "sandblasted" by beach sand, or else it was parked and sat for periods of time. My 95 YJ came from VA Beach, and it was in the same shape underneath. I bought it wrecked and rebuilt it...it sat in a salvage yard and that is exactly what mine looked like underneath, just because it sat in a dirt floor storage barn before I bought it to rebuild it. Body looks just like yours underneath, but driveline components looked just like yours. Steel wire wheel on a drill cleaned it up and put a nice coating of POR 15 on it and it looks just like new. It looks like it is light surface rust. Not a big deal really...hope this helps you.
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Old 01-01-2011, 09:33 PM   #8
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2006 with 20k miles in Cali with that kinda rust? IMO it seems just a tad fishy.
the rust seems manageable but still. even here in Michigan things don't seem that bad when they are that new. and if they are the body shows it as well.

Doesn't mean I wouldn't buy it, just maybe for a bit less.
look it over well and try to get a carfax, if it has been crashed maybe thats why the condition does not match throughout the car.
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Old 01-01-2011, 09:35 PM   #9
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Thanks

Yes the Jeep is located near a beach and there are many sand dunes out that way.
Thanks for the input and for the diagram...You really think it looks like a D30? I hope not, otherwise this guy is a crook!!!Based upon the chart, however, the middle screw of the D30 is higher (almost at the same height as the mount screws at lfar eft and right). In the picture this differential plate has the middle screw lower (like in the D44 diagram).....at least it looks like it does! Hard to tell. Anyways, if I am lucky to get it, I will do my best to remove the rust!
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Old 01-01-2011, 09:40 PM   #10
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Your first post says its a Rubi, are there locker switches on the dash below the radio? Rubi's only come with 44's in the front.
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Old 01-01-2011, 09:50 PM   #11
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Yes

Yes it has the switch right below the radio and next to the O/D switch. When I test drove it I tested the the lockers: they only turn on when the Jeep is in 4L. Thanks for the tip!
Again, the Jeep seemed flawless, all except the rust on the bottom!

I found anothe Rubi Unlimited, 2005 hardtop with 60K miles for the same price (with no rust) but a bit more "used". I think I prefer this one with the low miles (except has it has the rust).
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Old 01-01-2011, 09:53 PM   #12
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Thanks

I'll get a carfax for sure; thanks man.
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Old 01-01-2011, 10:15 PM   #13
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OSPHO the crap out of it and call it done.....it is normal surface rust...or if it really really really bothers you buy it, disassemble all the undercarriage, have it all powdercoated and re-assemble it....lol....
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Old 01-01-2011, 10:20 PM   #14
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It may have been parked on grass. Wet grass keeps the underside wet, and rusty, without doing body damage.

Go for it!
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Old 01-01-2011, 10:21 PM   #15
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Ospho?
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Old 01-01-2011, 10:33 PM   #16
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looked at one like this (well actually, i live on the beach, so 90% of the ones i looked at look like this!) My car guy said put it on a lift and power wash the mess outa it then spray everything down with a light oil and it'd be fine. Didn't buy the jeep but sounds like good advice
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Old 01-01-2011, 10:35 PM   #17
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Quote:
Originally Posted by BarciJP View Post
Ospho?
Yes OSPHO....best stuff ever! Not cheap but I've been using it for 20 plus years with unbelievable success.

Ospho rust primer
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Old 01-01-2011, 10:44 PM   #18
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OSPHO sounds good; thanks for the tip!!
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Old 01-01-2011, 10:49 PM   #19
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That's what mine looked like when I bought it. Those parts aren't stainless, they are going to get surface rust in no time, especially the drive shafts and u-joints on the front axle. Looks pretty good to me.....

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