1990 Toyota 4x4 Odyssey RV Build (longgggg post)

Aedelmann

New member
Hey guys, I've been lurking here for a while but have never posted! I am currently in the process of a full rebuild on a rare Toyota Odyssey 4x4 v6 RV. I bought it a few months ago and started ripping it apart. I bought the truck in "excellent" craigslist condition, which means I'm surprised it made it home. It made a 5 hour drive home and that was all I needed.

We will be building this rig with intention of living in it when the build is complete and traveling around anywhere and everywhere initially heading to Alaska from Florida. This will be my second Toyota RV build, but my first 4x4 RV build and I'm very excited. This build is being done by me, my girlfriend and my father.

Here she is in one of the initial ad photos.

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And another I took on the drive home!

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After we started digging into it it was clear there was a significant amount of water damage. The entire rear wall was completely rotted out, as well as most of the cab over area. Once the floor was out of it we saw the shady construction of the metal floor subframe. It was surprising that it was even able to hold weight considering it looks like they sourced their metal from a scrap yard. The entire camper was intact inside but was pretty gross and outdated. A total of 5 animal skeletons were found inside during demo. Being the ambitious folk we are, we ripped the damn thing apart.

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The next thing we did was clean the entire frame of surface rust with a heavy wire wheel and many hours of work. The frame was wire wheeled, rust converter applied, and painted. A 3M underliner coating will also be applied. A new floor subframe was then designed and welded up. We eliminated the need of the wooden portions of the floor subframe that the original company utilized. It left too much opportunity for rot and failure. The new subframe is completely metal, and very very strong with minimal added weight.

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The frame was designed in a way that will allow foam insulation board to sit directly inside of it sandwiched between the plywood flooring and the bottom foam insulation and under coating.

The rear end was then removed from the truck for rebuild. I decided the easiest way to accomplish this was just to unbolt from frame and wheel the entire thing out from under the truck.

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Aedelmann

New member
With the rear end out disassembly began. Stripped to a naked housing and cleaned cleaned cleaned! It took an 8 ft breaker bar to break one of the U-bolt nuts loose, the remainder were cut off lol.

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Everything was re-rusted, converter applied, and painted. All new seals, bearings, and brake components were installed.

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Other than diff fluid, the rear axle is done. The leafs are halfway done.

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They will be cleaned, rust converted, and painted. All new grade 8 hardware has been made by my local spring and axle company.

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I was also having trouble figuring out what the drive shaft carrier bearing was out of that the RV company used. It was definitely not normal Toyota parts. A trip to my driveshaft specialist shop had a new carrier bearing installed within 45 minutes. I had the remaining leaf hardware sourced and ready as well.

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I still need to clean and paint the driveshafts and install the other U-joints. After the leafs are assembled, the rear end will be put back under the truck frame. New fuel and brake lines are being ran, and I need to figure out my fuel tank situation. The stock tank is wayyyyy too small. When the rear end is back under the truck I will put on the new Bilsteins and get all of the brakes hooked up. It will then be about time to start prepping to put the walls back onto the truck. We will be installing white filon siding to really update the look of the truck from the old corrugated stuff.

So whoever read all of this, THANKS!!! I know it was a lot but you're now pretty much fully caught up on where we are at in the build.

I'd love to hear any comments or questions anyone has and would love to talk about the rig!
 
Wow I thought I had my camper body stripped down to the bone!

Good luck! I’ll be keeping an eye on your progress!


Sent from my iPhone using Tapatalk
 

Aedelmann

New member
Thanks! We are certainly in deep and having a good time lol. We managed to get the rear end back under the truck today. All the leaf packs were cleaned and painted. They were reassembled with some wrestling. All new bolts, bushings, teflon dampener pads, lithium grease coated, clamps, you get the idea. The most labor intensive part was hand hammering the new rivets into the clamps but it made for some cool footage.


After the clamps were on, everything was laid out.

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Triple checked that we had everything in the correct orientation and then assembled from the bottom up! Once done we put them back on to the axle.



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Love that fresh look.

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And back on the frame!


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I do not have a decent "before" photo but this should help give context.

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That's it for today. We still need to do some tying up down there. Sway bar reinstallation, run new brake lines and plumb those up, diff fluid, bolts on leaf clamps, drive shaft paint and u-joints, touch up paint in a few spots, etc
 

IdaSHO

IDACAMPER
Quite the project!

Major props for jumping in with both feet to bring back and update a cool rig! :cool:
 

Aedelmann

New member
Nice work so far. So what are your plans for the camper box?

The steel wall framing from the previous box will be reused and the same box shape with some modifications to the overcab. I’m going to go with the filon flat siding now rather than corrugated to bring the looks up to date.
 
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ITTOG

Well-known member
Looks like a fun build. This is the first 4x4 I have seen and the stance is way better than the 2wd versions.

Good call on updating the exterior by removing the corrugated material. That will make a drastic improvement.

Why did you update the drum brakes. These days it seems rotor conversion kits are just as cheap or at least close enough when you consider the improved braking performance.
 

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