1971 UZJ40 Build

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Joined
Jan 5, 2013
Threads
4
Messages
25
Location
Louisiana
Hi everyone,

I have finally decided to document my 40 series cruiser project. I've been lurking around the site for several years, but haven't contributed much. This will be my first build thread.

The original plan was a stock restoration, but as I started tearing down the rig it became clear that a full stock restoration would cost more than I was willing to spend and just wouldn't give me the performance I was after. I really wanted a V8! That being said, keeping the engine and drivetrain Toyota was top priority. Also, the rig had to have a manual transmission. No compromises here.

Up until 6 months ago, it had been sitting collecting rust, dust and spiders for several years. But with a sudden surge of interest and financial means to move forward, the progress has continued.

It all starts with a beat up 1971 FJ40 that spent decades in the Chihuahuan desert of Mexico. Overall, the cruiser was in pretty poor shape. The body showed evidence of at least two collisions and had quite a bit of rust. The frame was found to be in "fair" shape, with the exception of slightly bent front frame rails due to a front end collision at some point in the past.

The original F engine was scrapped in favor of a 4.7L 2UZFE from a wrecked Sequoia. Not wanting to use the original slush box behind the 2UZ, I began investigating the possibility of fitting an original H series Landcruiser manual transmission. When all was said and done, I decided on the H151f transmission. This transmission was chosen largely because of the stock toyota parts available for the conversion and its robust construction.

Since no USA vehicle ever came with a manual transmission mated to the 2UZ, the task of sourcing parts from overseas began.

The original 40 series axles will be retained and upgraded with larger gears and ARB lockers when ca$h is available.

More to to follow...
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After searching through websites of Australian wrecking yards, I located a used gearbox and transfer case combo from a '92 80 series with the 1HDT engine. The owner verified the transmission was a 14 spline input and had the full time viscous transfer case. Price was agreed upon and I purchased the unit. I used a third party freight company and they arranged and attended to shipping and importation details. Took three months to receive. This was not cheap!

While waiting for the tranny, I contacted a Toyota dealer in Sydney and ordered the UZJ100 clutch and bellhousing parts for the conversion. Side note: I will never go this route again! At the time I was unaware that Cruiser Parts could order ANY toyota part at a greatly discounted price. I grossly overpaid. On a positive note, the parts arrived in about 4 weeks. Here is a pic of the flywheel, pilot bearing, 300mm clutch disc, pressure plate, release fork and bearing, and the two-piece bellhousing/clutch cover:


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And a pic of the flywheel and clutch assembled to the engine:


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With bellhousing:


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I also decided on running a standalone engine management computer. After much research, I went with the Adaptronic e1280s super ECU. This ecu will allow full sequential injection and ignition control at a much more agreeable price than the bigger names in the ecu market. It probably would have been possible just to try and run the stock Sequoia ECU and "fool" it into thinking that the auto tranny was in "Drive" all the time. But, rather than trying to deal with all that headache, I went standalone. Plus, who knows...turbos may be somewhere in the future!! Here is a pic of the e1280s wiring loom being spliced into the 2uz harness:


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More to come!
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More updates...

Once the transmission finally arrived, I wasted no time bolting everything up. I was immediately disappointed to find that the 1HDT input shaft on the H151f was about 60mm too short! Additionally, the front bearing cover tube was also too short to allow the release bearing sufficient travel during clutch disengagement.

Bolted up to the bellhousing nicely:


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Too short!


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A quick call to Cruiser Parts with the p/n's for the UZJ100 input shaft and front bearing cover had the required parts shipped from Japan in 4 weeks time. While waiting, I began disassembling the gearbox to fit the UZJ input shaft.


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I didn't fully disassemble the transmission output shaft, but a visual inspection of the 1st and 2nd gear synchro ring teeth showed considerable wear. This gearbox was sourced from an 11/92 hdj80 which is before the synchros were updated by Toyota in 96. However, a full tranny rebuild was not in the budget just yet and the gears shift without any crunching...on the bench anyway. A road test will determine how long the rebuild can wait.

New UZJ100 input shaft (left) compared to HDJ80 shaft (right):


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I wish that I had taken more pics of the uzj input shaft to show the slight differences of the dog ring. The teeth on the uzj dog ring are slightly wider and lack the small recesses between the teeth that the hdj shaft has. The differences can kind of be seen in the pic above. However, the clearance between the synchro ring back and front of dog ring are within the hdj FSM specification. The hub sleeve also engages the input dog ring smoothly when the tranny is shifted into 4th, so I think it'll be OK. Road test will verify.

Think I heard the engine moan when I finally bolted the tranny back up ;)


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Now it is time to set the drivetrain between the frame rails and fab up some mounts. This is the current stage of my build and updates will slow down a bit. I hope everyone is enjoying so far.
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Good choice on Engine
 
Please post all those part numbers ? :cheers:

Clutch and bellhousing parts I ordered:

31111-60311 Housing, Clutch
31011-60010 Housing Sub Assy Clutch, Front
11361-50030 Cover, Flywheel Housing Under
31121-60050 Cover, Clutch Housing, No 1
13405-50020 Flywheel, Sub Assy
90910-02127 Bolt, Flywheel Set
31210-0W032 Cover Assy, Clutch
31250-0W031 Disc Assy, Clutch
31230-60190 Bearing Assy, Clutch Release
90363-15017 Bearing (For Input Shaft)
31204-60101 Fork Sub Assy, Clutch Release
31232-60040 Clip, Release Bearing Hub
31236-60060 Support, Release Fork
31237-60010 Boot, Clutch Release Fork
31470-60240 Clutch Release cylinder

Transmission parts:

33301-60070 Input shaft
33131-60090 Front bearing cover

I ended up buying an aftermarket Exedy clutch kit and saved a about $200. It is OEM quality.

This parts list is by no means comprehensive and I am still finding stuff I need...oil seals, special sized bolts, drive shaft components, etc.
 
After much research, I went with the Adaptronic e1280s super ECU.

Did you research the Spitronics ECU? If so why did you choose the Adaptronic over the Spit?
 
I know this thread is pretty old but I am headed down a similar road and would find it helpfull to know how this project turned out.

Did it get finished or do you have any updates?
 
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