Figured I wouldn't blow up the what did you do to your 80 thread and start a build thread finally
1996 HDJ81 VX Limited
Last winter I purchased a 1996 Land Cruiser HDJ81 VX Limited from Heat lighting imports in GA — RHD, 1HD-FT 4.2L turbo diesel, A442F auto, full-time 4WD with center diff lock and rear LSD. It came over at 199,577 km with a clean auction history (no accidents, no rollback), and it’s now my daily. It’s at 218,749 km as I write this.
Build philosophy
OEM-plus, period-correct, reversible. The goal is a truck that looks and feels like something a JDM owner could have built in the late 90s — analog gauges and factory engineering preserved wherever possible.
This is my daily driver and highway truck first, with light off-road duty. Reliability beats power.
Work done so far
**Transmission (A442F)**
- Replaced all four shift solenoids, new filter, pan drop
- Replaced the kickdown cable
- Three drain-and-fill passes with Valvoline MaxLife (Dexron III), most recent at 216,574 km
- Shifts are noticeably crisper and lockup behavior is consistent (~2,090 RPM at 100 km/h on 285s)
**Intercooler + trans cooling**
- PDI large-core front-mount intercooler, 1HD-FT auto spec, with the integrated 12-plate 34,000 BTU transmission cooler.
**Exhaust & boost control**
- 3” custom turbo-back with magnaflow muffler. I have it dumping behind the rear drivers side middle passenger.
- Trust TVVC boost controller, cab-mounted with vacuum lines through the firewall — period-correct chrome/yellow Trust unit (same product GReddy sold as the VVC Type Mini)
- GReddy turbo timer with the HDJ80/1HD-FT plug-in harness — need to install
- SAAS ST1208 catch can, installed at 218,500 km
**Gauges (Omori 52mm, all mechanical)**
- Boost: installed and baselined — 0.6 bar cruising, 0.8 bar on a hard pull, stock CT26/actuator
- EGT: gauge installed, sensor plumbing needs done
- Oil pressure: gauge installed, capillary line run to the engine bay and SAAS sandwich plate at the oil filter as a source.
- Mounted in a 4x4 Concepts A-pillar pod; power wiring and final pillar mounting still to do
- No TVVC adjustments until the EGT gauge is reading. Boost without EGT on a diesel is flying blind.
**Electrical & lighting**
- Pair of KASLIGHT negative-switched H4 relay harnesses so I can run dual high/low quads.
- Dual battery setup: left side stays 24V starting duty, passenger side runs 12V accessories
- Factory RS3000 alarm being properly reintegrated — building extension harnesses from extra OEM connectors instead of cutting the factory loom. Only thing left is to install the 6p extension harnesses.
**Speedo & rolling stock**
- Falken Rubitrail A/T LT285/75R16E
- Lutz LTZ-80SCD speedometer calibrator, dialed in at −2.5% against live GPS at highway speed.
- For fuel loggin g after corrected MPG has been running 17.4–19.6 US MPG depending on the tank, right in the expected range for an auto HDJ81.
**Suspension, phase 1**
- Sway bar service complete, both ends
- Riding on about 1-2" drop springs and TEMS shocks for now
## In progress
- **Steering pump**: confirmed leaking, OEM replacement planned.
- **Suspension, phase 2**: OEM front and rear panhard bars, OEM upper rear control arms, and SPC 25960 adjustable lower rears all on order with fresh OEM hardware. Trailing arms are still a decision point (re-bush vs. new OEM vs. Delta). Once the links are in: OME 2861/2862 springs and nitrochargers going in.
- **Trans temp gauge**: hunting Yahoo Auctions for a period-correct mechanical Omori to fill the last pod slot. A442F lives at 80–90°C and starts cooking around 120°C, so the gauge needs to read to at least 150°C.
## Future plans
**Fueling & turbo **
- Bailey’s Diesel blueprinted injector set (keeping my originals as spare cores)
- Fresh OEM injector lines
- HD Automotive HD-G333 “Titan” turbo with the Tillix split-pulse merge manifold (HPC coated), installed together
- Mamba adjustable CT26-pattern wastegate actuator (0.8 bar base spring) targeting ~18 psi
- All of this waits on the full gauge cluster being live — boost, EGT, oil pressure, and trans temp reading before anything gets turned up
**Chassis & brakes**
- ARB winch bumper up front and a heavy rear bumper
- DBA 4000 slotted rotors with EBC Greenstuff pads (DP6992/DP6993)
- Knuckle and birfield service is overdue and will be its own standalone job.
**The long-term maybe**
- ZF 8HP70 swap. The 8HP70 variant is the right one for the torque target, and the plan would be sourcing everything independently rather than buying a kit. Filed under “someday” — the A442F gets a fair shot first.
## Maintenance baseline, for the record
Rotella T6 5W-40 on the 5,000 km interval. Amsoil gear oil in the diffs and transfer (Slip Lock in the rear LSD), MaxLife in the trans, Type T in the steering. Timing belt was done at 191,505 km.
1996 HDJ81 VX Limited
Last winter I purchased a 1996 Land Cruiser HDJ81 VX Limited from Heat lighting imports in GA — RHD, 1HD-FT 4.2L turbo diesel, A442F auto, full-time 4WD with center diff lock and rear LSD. It came over at 199,577 km with a clean auction history (no accidents, no rollback), and it’s now my daily. It’s at 218,749 km as I write this.
Build philosophy
OEM-plus, period-correct, reversible. The goal is a truck that looks and feels like something a JDM owner could have built in the late 90s — analog gauges and factory engineering preserved wherever possible.
This is my daily driver and highway truck first, with light off-road duty. Reliability beats power.
Work done so far
**Transmission (A442F)**
- Replaced all four shift solenoids, new filter, pan drop
- Replaced the kickdown cable
- Three drain-and-fill passes with Valvoline MaxLife (Dexron III), most recent at 216,574 km
- Shifts are noticeably crisper and lockup behavior is consistent (~2,090 RPM at 100 km/h on 285s)
**Intercooler + trans cooling**
- PDI large-core front-mount intercooler, 1HD-FT auto spec, with the integrated 12-plate 34,000 BTU transmission cooler.
**Exhaust & boost control**
- 3” custom turbo-back with magnaflow muffler. I have it dumping behind the rear drivers side middle passenger.
- Trust TVVC boost controller, cab-mounted with vacuum lines through the firewall — period-correct chrome/yellow Trust unit (same product GReddy sold as the VVC Type Mini)
- GReddy turbo timer with the HDJ80/1HD-FT plug-in harness — need to install
- SAAS ST1208 catch can, installed at 218,500 km
**Gauges (Omori 52mm, all mechanical)**
- Boost: installed and baselined — 0.6 bar cruising, 0.8 bar on a hard pull, stock CT26/actuator
- EGT: gauge installed, sensor plumbing needs done
- Oil pressure: gauge installed, capillary line run to the engine bay and SAAS sandwich plate at the oil filter as a source.
- Mounted in a 4x4 Concepts A-pillar pod; power wiring and final pillar mounting still to do
- No TVVC adjustments until the EGT gauge is reading. Boost without EGT on a diesel is flying blind.
**Electrical & lighting**
- Pair of KASLIGHT negative-switched H4 relay harnesses so I can run dual high/low quads.
- Dual battery setup: left side stays 24V starting duty, passenger side runs 12V accessories
- Factory RS3000 alarm being properly reintegrated — building extension harnesses from extra OEM connectors instead of cutting the factory loom. Only thing left is to install the 6p extension harnesses.
**Speedo & rolling stock**
- Falken Rubitrail A/T LT285/75R16E
- Lutz LTZ-80SCD speedometer calibrator, dialed in at −2.5% against live GPS at highway speed.
- For fuel loggin g after corrected MPG has been running 17.4–19.6 US MPG depending on the tank, right in the expected range for an auto HDJ81.
**Suspension, phase 1**
- Sway bar service complete, both ends
- Riding on about 1-2" drop springs and TEMS shocks for now
## In progress
- **Steering pump**: confirmed leaking, OEM replacement planned.
- **Suspension, phase 2**: OEM front and rear panhard bars, OEM upper rear control arms, and SPC 25960 adjustable lower rears all on order with fresh OEM hardware. Trailing arms are still a decision point (re-bush vs. new OEM vs. Delta). Once the links are in: OME 2861/2862 springs and nitrochargers going in.
- **Trans temp gauge**: hunting Yahoo Auctions for a period-correct mechanical Omori to fill the last pod slot. A442F lives at 80–90°C and starts cooking around 120°C, so the gauge needs to read to at least 150°C.
## Future plans
**Fueling & turbo **
- Bailey’s Diesel blueprinted injector set (keeping my originals as spare cores)
- Fresh OEM injector lines
- HD Automotive HD-G333 “Titan” turbo with the Tillix split-pulse merge manifold (HPC coated), installed together
- Mamba adjustable CT26-pattern wastegate actuator (0.8 bar base spring) targeting ~18 psi
- All of this waits on the full gauge cluster being live — boost, EGT, oil pressure, and trans temp reading before anything gets turned up
**Chassis & brakes**
- ARB winch bumper up front and a heavy rear bumper
- DBA 4000 slotted rotors with EBC Greenstuff pads (DP6992/DP6993)
- Knuckle and birfield service is overdue and will be its own standalone job.
**The long-term maybe**
- ZF 8HP70 swap. The 8HP70 variant is the right one for the torque target, and the plan would be sourcing everything independently rather than buying a kit. Filed under “someday” — the A442F gets a fair shot first.
## Maintenance baseline, for the record
Rotella T6 5W-40 on the 5,000 km interval. Amsoil gear oil in the diffs and transfer (Slip Lock in the rear LSD), MaxLife in the trans, Type T in the steering. Timing belt was done at 191,505 km.
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