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1uzfe Reincarnated 4runner: Project Frankenkryst ENGINE INSTALLATION PROPPER: Strengthening bonnet support bar Part of the top of the bonnet support bar had to be cut and (then reinforced at the insistence of the engineer) to allow for the radiator cap in this new setup. Bars were also...

ENGINE INSTALLATION PROPPER: Cooling Issues Cooling, or lack there of, has been an issue for many guys doing this conversion due to the smallish engine bay creating restricted airflow. I did a fair bit of reading to see what other guys had done and discussed this at length with the mechanics...

ENGINE INSTALLATION: Transmission Mounts A support bracket was welded onto the gearbox support cross member lifting the gearbox two inches to work with the body lift. This is great as it means the transfer and tranny sump are less likely to be smashed by rocks and debris. The plate that the...

ENGINE INSTALLATION: Exhaust Crown “log” manifolds were installed on engine for better clearance of steering column. I managed to obtain Crown exhaust manifolds from a fellow Lextremer in Perth (thanks Shuey!). These are the smaller log type manifolds and I replaced the original Celsior...

ENGINE INSTALLATION: Accelerator Cable/Modifications As I had put the American SC400 throttle on then reversed the plenum, the accelerator cables pulled from the correct side. The original cable from the pedal to the throttle was used but for the throttle to gearbox a cable from a Hilux LN...

Man, that would have to be the tidiest 1uz install I have seen on a 4x4! Are the crown manifolds coated or polished?

ENGINE INSTALLATION: Engine Mounting Once the old engine was pulled out the mechanics spent numerous hours sitting the 1uzfe in the engine bay and moving it about to find the best possible position. With an engine this size in an engine bay as small as the 4runners you are talking about being...

Part 3: ENGINE INSTALLATION PROPER Everything I have written about so far (except the transfer case issues) was completed PRIOR to the installation of the engine. It was at this stage that I handed everything over to the mechanics Hi Tech 4x4 in Penrith, NSW. Before deciding on a mechanic...

PRE-CONVERSION WORK ON TRANSFER CASE: Wiring 4wd Dash light This was simple. I wired up the green 4wd dash light to the switch and plug on the top of the tcase. One end was attached to the 4wd dash light wire and the other was earthed. Every time 4wd is engaged the wire is earthed and the...

PRE-CONVERSION WORK ON TRANSFER CASE: Adaptation of Speed Sensors There were other small adaptations to be made on the manual shifting VF1A Tcase as well. Firstly the speed sensor on the back of the transfer case that drives the speedo in the dash was a cable driven one, this had to be...

PRE-CONVERSION WORK ON TRANSFER CASE: Adaptation of Tcase Shifter Levers As I had just changed the transfer case from an electric shift to a manual shift, the shifter lever for the Tcase also had to be changed. The Surf VF1AM electric shift type had a plastic ball on the shift pin and a bend...

PRE-CONVERSION WORK ON TRANSFER CASE: Transfer case compatibility and adaptation The VF1AM (electric shift) and the VF1A (manual shift) transfer cases are essentially the same, they have the same bolt pattern, similar internals and similar shell. The diagrams in the Toyota manuals show...

PRE-CONVERSION WORK ON TRANSFER CASE: The switch from electric shift to manual shift and why. The following process was completed after the engine was installed in the car but I have included it here so this build process story makes sense. I had originally installed the electrical...

PRE-CONVERSION WORK ON TRANSFER CASE: Creating transfer case relay box and wiring The Toyota Surf comes with a 4wd control box to control the motor on the back of the transfer case. Unfortunately I don’t have one of these or the correct loom so I had to make my own 4wd control box out of 6...

PRE-CONVERSION WORK ON TRANSFER CASE: Transfer Case and Transfer Case Issues When I was first preparing the motor, prior to it being installed, I was going to use the Toyota Surf transfer electric shift Tcase (VF1AM type) as others had installed this with a good success rate. As well as the...

PRE-CONVERSION WORK ON A341E GEAR BOX: Assembling the Gearbox/transfer combination 1. With the Speed Sensor Rotor fixed on the output shaft and the Speed sensor bolted into the Transfer Adapter, I bolted the transfer adapter to the Lexus gearbox, using the torque specs in a repair manual: 34...

LOL!!!!! Ain't that the truth!!! As unavoidable as gravity. Mostly because of the knock on effect and the old adage "For every one thing you modify you will have to then modify another three".

PRE-CONVERSION WORK ON A341E GEAR BOX: Other Gearbox Issues The oil pan on the Surf gearbox (A340F) is much bigger than the 1uzfe gearbox (A341E) So I tried to replace the oil pan on the 1uz transmission with the one off the Toyota Surf transmission for extra transmission fluid and cooling...

With regards to speed sensors, I discovered the hard way how important they are to Toyota engine management systems. I had a vibration/shudder problem at about 80km and, like many vibration problems, it took me months to chase the problem down. It ended up being something that is easily...

PRE-CONVERSION WORK ON A341E GEAR BOX: Cutting and fixing the 4 prong speed sensor rotor Again, this is a process I copied from the guys on the above links. Probably a good idea to check them out as well. 1. I removed the tail piece of the Lexus gearbox. 2. Removed transfer case and...