Build Euro 1HD-FT Turbo Diesel/H151F 5 Speed Manual LHD 96' USA Swap

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Countdown to startup.

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It is sideways, it is grainy, but it is running. Off to the shop tomorrow to button this puppy up, as it is 72 hours to the 45 Run!

 
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1HD-FT vs. Starbucks...damn this motor is smooth.



Spent 10 hours today buttoning up a bunch of loose ends. Still some issues to deal with, such as the exhaust shop which neglected to put in the flex, and did not use mandrel bends on half of the system...so back that goes. Still need AC lines, and need to sort out a few minor leaks. It does move under it's own power now, which is a great milestone. Will see if we can pull it all together for the 45 Run.

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Rock40 said:
I feel like I finally made some progress with some of the wiring hurdles I've been struggling with lately....in regards to my previous post, research shows the tach should be a GROUNDED circuit and not powered by 12V at the IP sensor. I still have not gotten the tach to work but I'm hoping the new (replacement) one from BC will be functional.

I did however, figure out the oil pressure gauge. After pouring over the EWD's, this is the engine bay plug that contains the wire for the oil pressure gauge.
View attachment 1202571
The white wire runs up to the back of the gauge cluster. I have it jumped (temporarily) with the green wire. My plan is to go to a junkyard in the future and source up the correct plug. On the EWD's it is: EA4
View attachment 1202576

Anyway, after getting that wired up correctly, the oil pressure gauge reads just under the "1/2" mark at cold idle. Success

I also sorted out the "low oil warning" circuit. From what I can figure, some trucks/engines have this and some do not. The pink wire is from the 1H2 connector behind the glove box, pin position #7...
View attachment 1202575
After removing the pink wire from the 1H2 connector, it can be run out the firewall and down to the low oil level sensor on the engine. It's a 2 wire sensor, one lead is ground (black/white) and the other is connected to the pink wire. Once hooked up, the little "oil can" dummy light on the dash should only illuminate in a low oil situation. Problem solved....
Click to expand...

I'm almost done with my 1HZ to 1HD-FT swap. Having a hard time figuring out the oil pressure gauge. I see you went from gas to diesel. Did you end up going direct to the gauge for power? I'm not sure if the gauge is ground based or if it's looking for power to start working. the EWD seems to be oriented for gas vehicle wiring. Any suggestions?
 
I'm not sure if the diesel is different, my guess is it's probably not. I simply wired the lead (from the sender on the engine block) over to the little grey plug shown in the photo near the air cleaner and the gauge started working fine. I didn't have to modify any of the factory wiring or anything behind the gauge itself. Hope this helps.
 
Lo2aY said:
I'm almost done with my 1HZ to 1HD-FT swap. Having a hard time figuring out the oil pressure gauge. I see you went from gas to diesel. Did you end up going direct to the gauge for power? I'm not sure if the gauge is ground based or if it's looking for power to start working. the EWD seems to be oriented for gas vehicle wiring. Any suggestions?
Click to expand...

With my 96 1FZ-FE wiring loom the two wires for the oil pressure gauge needed to be extended to the opposite side of the motor, where the 1HD-FT sensor resides. Thus the same wires then gave the signal to the cluster in the dash. I also used the 1FZ-FE oil pressure sensor so that it was for sure sending the right signal to my gauge. One wire provides ground, and the other comes from the gauge. The only glitch was that I reversed the wires and the gauge read at the top, which was fixed in about a minute after re-pinning them in the socket. If your 1HZ had a pressure gauge, it should have all the required wires to the gauge already. I have a diesel EWD manual that I can also cross reference and will update this post later today.
 
So when will you be burning lots of diesel in that truck Steve? It looks like it's about there, yes? Anything else you are waiting on other than the exhaust folks? Which muffler are you using? Aero-turbine by chance?

I have been following both you and Ross' conversions and they are a treat. You both have done fine work and should be proud. Proper Factory-type conversions are not such a slam dunk as many may think. Hats off to you both!

Ross-
 
CycloSteve said:
With my 96 1FZ-FE wiring loom the two wires for the oil pressure gauge needed to be extended to the opposite side of the motor, where the 1HD-FT sensor resides. Thus the same wires then gave the signal to the cluster in the dash. I also used the 1FZ-FE oil pressure sensor so that it was for sure sending the right signal to my gauge. One wire provides ground, and the other comes from the gauge. The only glitch was that I reversed the wires and the gauge read at the top, which was fixed in about a minute after re-pinning them in the socket. If your 1HZ had a pressure gauge, it should have all the required wires to the gauge already. I have a diesel EWD manual that I can also cross reference and will update this post later today.
Click to expand...

I just got it to work. There was a cut wire in the loom. When the truck is running, it reads just a tad above half. when I give it throttle and keep it steady at 2000RPM, the gauge doesn't move at all! Is this normal?

How can I get the Diesel EWD manual?

Thanks

Luai
 
Workhorse said:
So when will you be burning lots of diesel in that truck Steve? It looks like it's about there, yes? Anything else you are waiting on other than the exhaust folks? Which muffler are you using? Aero-turbine by chance?

I have been following both you and Ross' conversions and they are a treat. You both have done fine work and should be proud. Proper Factory-type conversions are not such a slam dunk as many may think. Hats off to you both!

Ross-
Click to expand...

The exhaust was redone early this past week, and the AC was buttoned up on Thursday. I do have an AeroTurbine, but have left it out for now...will see how that goes, and will have that added if the truck ends up too noisy at speed.

Now getting another piece of plumbing for the intake, as it is a bit more complicated than stock due to the GTurbo, intercooler, and my running a modified version of the 1FZ-FE air cleaner topper. Have a DMV appointment for next Friday, thus it should/needs be GTG at that point. Planning a few short trips in the next month, and a big trip to visit family in Montana after that. Looking forward to burning much less diesel than petrol, as my average MPG was right around 10 over the past seven years, doh!

Lo2aY said:
Look what I just found :)

http://htftp.offroadsz.com/marinhaker/programi/VSI4KO ZA TOYO/Land_Cruiser_1996_Electrical_Wiring_Diagram2.pdf

This answers many of my questions. Is this the same EWD you have?
Click to expand...

Yes, this is the exact same one. It was essential in my quest to convert from petrol to diesel. Looking at both the US and ROW EWD's, the wiring colors are essentially the same, with the White wire being the one from the console, and the Brown one (sometimes White/Black) providing the ground.

The level of pressure sounds fine, as mine (with the 1FZ-FE sensor) runs about 2/3 and does not move much from idle onwards.
 
"Looking forward to burning much less diesel than petrol, as my average MPG was right around 10 over the past seven years, doh!"

Steve-I meant burning diesel going places, I should have worded that better!! I am still impressed and happy with my jump from 1FZ-FE MPG on a real good day to my HDFT MPG on an average day.
 
Workhorse said:
"Looking forward to burning much less diesel than petrol, as my average MPG was right around 10 over the past seven years, doh!"

Steve-I meant burning diesel going places, I should have worded that better!! I am still impressed and happy with my jump from 1FZ-FE MPG on a real good day to my HDFT MPG on an average day.
Click to expand...
X2, the fuel economy is really great. I've logged over 12,000 miles so far on my swap and the truck weighs in (empty) with two people on board at just over 6,000lbs. Last tank of fuel with my wife commuting back and forth to work was 20mpg.
 
CycloSteve said:
Yes, this is the exact same one. It was essential in my quest to convert from petrol to diesel. Looking at both the US and ROW EWD's, the wiring colors are essentially the same, with the White wire being the one from the console, and the Brown one (sometimes White/Black) providing the ground.

The level of pressure sounds fine, as mine (with the 1FZ-FE sensor) runs about 2/3 and does not move much from idle onwards.
Click to expand...


10-4

Does it move at 2000 RPM? The one I have won't move
 
Looks like Georg is working today...took the rig for it's first freeway run, and about 10 miles at speed. All gauges working, and systems a go. Boosting around 22 under load, 5 around town. Still need to adjust the speedo box, as it is off by about 8% (should be about 67 in the pic below). Looks like she will be coming home on Friday!

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Looks like once the motor is warmed up the oil pressure runs about mid-gauge.
 
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Sweet :)
 
Been doing the math. Going back to 4.10's would get me down to 2400 rpm, and going to 3.73's would get it to 2200 at 65mph. This is with a set of 315's. I already have the Overdrive and Underdrive gear sets in the T-Case. Will drive it for a while and decide from there.
 
It is official, the truck is back in my hands. Did all of the DMV paperwork today for the re-power, and she is reg'od as a Diesel now.

Drove the 100 miles back home, and most everything is working as expected, with few issues to sort out:
  • A/C for some reason keeps cycling the compressor on and off, so will have to figure that out.
  • A/C idle-up needs to be re-installed.
  • Turbo light needed adjustment, and have set that now to come on at 20psi.
  • Forgot to try the Cruise, but will do so tomorrow.
More observations:
  • Engine temps are very consistent and running cool, towards the lower-third of the scale. Using the 1FZ gauge and sensor.
  • Oil pressure is typically also around the first-third of the scale. Drops a little on idle.
  • Cruising on freeway at 65mph runs about 8psi boost with the Grunter Extreme, and EGT's around 450F.
  • Did one large prolonged climb up Altamont Pass, about 1000' of climbing, 4% grade, steady at 65mph in 5th, Boost around 18psi, EGT's maxed at 900F, dropping back down to under 400F very quickly on the descent.
  • No smoke, and minimal diesel smell.
  • Pulls like a tractor no matter what gear you are in.
  • First gear is not needed in most driving conditions.
  • Low range is amazing (3:1 Marlin Gears)
  • Hi range OD gear has no noticible noise
  • Likely need to go with 4.10's or 3.73's to get the freeway RPM down
  • Love the sound - ended up having the Aero muffler installed, and the exhaust is a straight-back 3" mandrel bent setup.
Washed it for the first time in over a year, and it definitely needed it. Packed it already going camping tomorrow with the Boy Scouts, so no rest for the wicked!

Will take a few pics one have it out in the daylight.
 
Jesus, is your pyro pre turbo? I see 450f at idle let alone running 65mph. Your egts seem extremely low.

Good news about the hi range gears. Sounds like 4.10s and the hirange gears are the ticket. Too bad so much $$.
 
X2 on the low EGT's for that speed, I'm seeing 850F give or take pre-turbo with mine at 65mph, and 12-14psi. Maybe the Grunter Extreme makes the difference?

Any info on how you've recalibrated your overboost dash light?

Also, my AC compressor cycles on and off as well, they don't run 100% of the time.

Edit: just realized you're IC'd, that's going to make a big difference as well.
 
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