I recently swapped a 1HZ with a safari turbo kit, R151 transmission and split tcase into a LX450. I learned a great deal lurking on Ih8mud. Hopefully this thread will help if you’re considering a 1HZ/D swap. I’ve put over 8000 miles on the truck since “finishing” the conversion in December. Running 255/85/16 cooper st at 45psi and load with me + + our aussie + gear for a 3 week cross country trip it got 19mpg on back roads and 15-16mpg doing 70-75mph. At 75mph the engines turning 2700rpm…I see 35’s in the future.
This is a list of all the parts purchased after the engine, tranny and tcase.
After collecting all the parts, the swap was straight forward. The 1HZ bolts to the existing frame mounts. I made new tcase cross member mounts that tuck the tcase above the frame. I plan to make a tcase skid plate that ties in the factory cross member frame mounts with the cross member. The rear drive shaft needed to be lengthened. The stock 70 series driveshaft fit in the front.
Almost a flat belly
For the wiring I pinned out the 1HZ harness then spent an evening with the LX450 wiring diagrams to figure out where to splice it in. I spliced a majority of the engine harness into the IL1 connector under the dash. These are my notes
1HZ harness
This is a list of all the parts purchased after the engine, tranny and tcase.
After collecting all the parts, the swap was straight forward. The 1HZ bolts to the existing frame mounts. I made new tcase cross member mounts that tuck the tcase above the frame. I plan to make a tcase skid plate that ties in the factory cross member frame mounts with the cross member. The rear drive shaft needed to be lengthened. The stock 70 series driveshaft fit in the front.
Almost a flat belly
For the wiring I pinned out the 1HZ harness then spent an evening with the LX450 wiring diagrams to figure out where to splice it in. I spliced a majority of the engine harness into the IL1 connector under the dash. These are my notes
1HZ harness
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