- Thread starter
- #241
Superhatch had a spare TCM and I swapped them out. It made a huge difference in the driveability of the truck.
Build Mitsubishi 4D34-3AT3B diesel swap into 94 FZJ80
- Thread starter Fromage
- Start date
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Superhatch had a spare TCM and I swapped them out. It made a huge difference in the driveability of the truck.
Glad you were able to solve it! I would not have suspected the TCM. Do you think that your old one was defective or just had the wrong or old software?
- Thread starter
- #244
If you look above, it had a fried diode and I suspect some other damage as well. Replacing the damaged diode had no effect. I think it was due to the donor truck having some wiring corrosion. I never got to drive the donor truck and it works fine with the new TCM, so I figure it was an existing problem and in no way related to the conversion.
- Thread starter
- #246
It's been running winter fuel with lots of idling, so I've been seeing a pretty constant 15L/100, which is about 16 mpg U.S. That is city driving with a lot of highway, and lots of hills. I also always drive 75mph or faster, am always the first guy away from a stop light, pretty much drive it like it's stolen. Driving the 1FZ the same way I would have gotten 10 mpg. I have no doubt it can get 20 mpg if driven conservatively.
- Thread starter
- #247
Update, 60K kms on the swap, other than the bad transmission O ring documented here and a cracked injector line which caused a fuel leak, no other issues. Gets a solid 16-20 mpg US.
Nice Job! just read the entire thread. Picked up a 99 FE-HD with a 4D34-3AT3A and an auto. Considering putting the whole deal in my 68 galaxie wagon that currently gets 8 mpg
Whats your cruiser weigh? I have dreams of 25 mpg and endless free waste veggy oil for a cross country trip or two
- Thread starter
- #249
The Cruiser is full time 4wd on 33 inch tires and is a tank. I would think you could get every bit of 25 mpg if not higher. You could probably run a 2.5-1 rear end gear 
My next upgrade will be converting to part-time 4wd to see if the mileage improves. I think it will.
My next upgrade will be converting to part-time 4wd to see if the mileage improves. I think it will.
The Cruiser is full time 4wd on 33 inch tires and is a tank. I would think you could get every bit of 25 mpg if not higher. You could probably run a 2.5-1 rear end gear
My next upgrade will be converting to part-time 4wd to see if the mileage improves. I think it will.
Part time kits have not shown any improvement in fuel economy with the standard gas motor. Lots of guys who have done this can verify.
It's unknown if a diesel would react any differently than the stocker gas motor, but it's rather unlikely.
The Cruiser is full time 4wd on 33 inch tires and is a tank. I would think you could get every bit of 25 mpg if not higher. You could probably run a 2.5-1 rear end gear
My next upgrade will be converting to part-time 4wd to see if the mileage improves. I think it will.
You won't save a measurable amount by converting to part-time. But you will cause a lot of handling, traction and tyre wear problems that you never knew about before.
How is that? The truck in question was available from the factory with part time 4wd.
With a 1HZ?
As you get more power and more acceleration, you start to notice. The fulltime4wd uses the anti-squat in the front suspension to keep it more level under acceleration and power. With only rwd, especially if you're lifted, they can get really boat-like. Lifting the nose everytime you accelerate.
With a 1HD-T.
- Thread starter
- #255
I think it will have an effect on this swap because the OD ratio is so high. All the info gathered for FZJs and HDJs doesn't really apply since their OD ratios are so comparatively low. The only similar 80 series are the 4BT swapped 80s with part time t cases which were geared quite high as well and got better mileage as 2wds.
I am going to try it with the CDL locked, the front driveshaft removed and hubs installed for a month or two and see if there is an improvement.
Thanks for your opinions but I will try it for myself and report back.
Edit: I doubt I will see some major handling issues. The truck only has stock fueling levels and only 175 hp or so.
I am going to try it with the CDL locked, the front driveshaft removed and hubs installed for a month or two and see if there is an improvement.
Thanks for your opinions but I will try it for myself and report back.
Edit: I doubt I will see some major handling issues. The truck only has stock fueling levels and only 175 hp or so.
- Thread starter
- #257
A long overdue update.
I never did get to do the part time test before winter hit, but I'm planning on trying it out in the spring. I recently swapped out the stock FZJ80 engine mounts for the Anchor 2469 mounts that the 4BT guys use all the time. They are almost identical to the stock mounts and work with the OEM frame very well, I did have to re-drill the engine-side mounts but it was a snap. It took a week for them to break in, but it eventually made a huge difference in vibrations and resonance in the vehicle. I used to avoid cruising at 55 mph in OD lock up since the dash would vibrate and it was annoying (that is around 1750 rpms or so). Now I can cruise at that speed in complete comfort. It also is a lot less violent on shutdown. I'd say these are the ticket for any large 4 cylinder swap if you want to retain the factory frame mounts - And they are $7 each through Rockauto.
Other than that, it runs great. The transmission is the best part. The ability to go from lockup 4th to 4th unlock, to 3rd locked, and down from there, makes it perform like a 6 speed transmission. I have to climb several long hills on my way to work and it always finds the right gear to stay in boost. The 1FZ did not like these hills and had to downshift to 3rd to make it to the top at 60 mph, this thing sails right up in 4th unlocked. It is also a beast for snow plowing - The lower 1st gear helps a lot.
We've had a very cold winter with plenty of -25C and colder days, and it's been amazing to see the difference in power with the cold, dense air. I was seeing sustained 20+ PSI in OD lockup on long pulls where in the summer I have a hard time seeing 15 PSI, and the power increase is phenomenal. I think the ECU does have fueling parameters up past 20 PSI, but it's hard to get up there in the summer.
I am still running totally stock fueling levels and adjustments. I have a few ideas to increase the fueling a bit, but it's really perfectly adequate as-is. I have towed 6500 lbs with it and it handles it well, OD is useless but 3rd lockup will happily do 70mph on the flats, but hills are tricky. The 1FZ was dead even if not worse.
Mileage is still tricky since I don't commute with it in the summer and it has a plow on it for the winter. I have seen down near 12L/100 at 60 mph driving like an old lady but it's hard to drive that slow!
The next upgrades are the part time testing, finish the 3" exhaust (still using the tailpipe and restrictive over axle pipe). To be honest the truck is kind of falling apart, it needs some work, that will probably keep me busy for a while.
I never did get to do the part time test before winter hit, but I'm planning on trying it out in the spring. I recently swapped out the stock FZJ80 engine mounts for the Anchor 2469 mounts that the 4BT guys use all the time. They are almost identical to the stock mounts and work with the OEM frame very well, I did have to re-drill the engine-side mounts but it was a snap. It took a week for them to break in, but it eventually made a huge difference in vibrations and resonance in the vehicle. I used to avoid cruising at 55 mph in OD lock up since the dash would vibrate and it was annoying (that is around 1750 rpms or so). Now I can cruise at that speed in complete comfort. It also is a lot less violent on shutdown. I'd say these are the ticket for any large 4 cylinder swap if you want to retain the factory frame mounts - And they are $7 each through Rockauto.
Other than that, it runs great. The transmission is the best part. The ability to go from lockup 4th to 4th unlock, to 3rd locked, and down from there, makes it perform like a 6 speed transmission. I have to climb several long hills on my way to work and it always finds the right gear to stay in boost. The 1FZ did not like these hills and had to downshift to 3rd to make it to the top at 60 mph, this thing sails right up in 4th unlocked. It is also a beast for snow plowing - The lower 1st gear helps a lot.
We've had a very cold winter with plenty of -25C and colder days, and it's been amazing to see the difference in power with the cold, dense air. I was seeing sustained 20+ PSI in OD lockup on long pulls where in the summer I have a hard time seeing 15 PSI, and the power increase is phenomenal. I think the ECU does have fueling parameters up past 20 PSI, but it's hard to get up there in the summer.
I am still running totally stock fueling levels and adjustments. I have a few ideas to increase the fueling a bit, but it's really perfectly adequate as-is. I have towed 6500 lbs with it and it handles it well, OD is useless but 3rd lockup will happily do 70mph on the flats, but hills are tricky. The 1FZ was dead even if not worse.
Mileage is still tricky since I don't commute with it in the summer and it has a plow on it for the winter. I have seen down near 12L/100 at 60 mph driving like an old lady but it's hard to drive that slow!
The next upgrades are the part time testing, finish the 3" exhaust (still using the tailpipe and restrictive over axle pipe). To be honest the truck is kind of falling apart, it needs some work, that will probably keep me busy for a while.
Hello to all!
Firstly a big big bravo to Formage for the idea and this exellent transplan! exellent work!Relly perfect!
I have some uestions...
1-What was your critiria to choose 4D34? I mean,that you could fit an even bigger engine like 4D33 or 4D35 etc etc...
2-Why you didnt try to fit a newer engine like 4M50 or something like this... i saw that your primary target is to gain as much better consuaption.These engines (4M50..) are a common rail,so you could gain more and more fuel economy.I know its even more complicated to build up the wiring of a coomon rail engine than a electronic control fuel pump engine...
These are my first worries about choosing the proper engine and offcourse again my copliments to you! exellent job indeed!
Cheers!
Firstly a big big bravo to Formage for the idea and this exellent transplan! exellent work!Relly perfect!
I have some uestions...
1-What was your critiria to choose 4D34? I mean,that you could fit an even bigger engine like 4D33 or 4D35 etc etc...
2-Why you didnt try to fit a newer engine like 4M50 or something like this... i saw that your primary target is to gain as much better consuaption.These engines (4M50..) are a common rail,so you could gain more and more fuel economy.I know its even more complicated to build up the wiring of a coomon rail engine than a electronic control fuel pump engine...
These are my first worries about choosing the proper engine and offcourse again my copliments to you! exellent job indeed!
Cheers!
I can't speak for Fromage, but if you read the threads starting with astr, I think the primary concern wasn't the engine, but the transmission. Since the AW450 is so similar to the A440/442 it allows you to keep the rest if the LC drivetrain stock. With that in mind, I believe there were 3 different makes that used the AW450 - Isuzu NPR, Nissan UD, and Mitsu Fuso.
The Isuzu ended up having a difficult starter issue, so as I recall that's why Fromage and Superhatch went with the Mitsu. Can't recall seeing anybody trying whatever is in the UD (maybe those vehicles are newer and more expensive.....?) Seems like the 4bt and 4d34 are both very similar in terms of design and strength.
The Isuzu ended up having a difficult starter issue, so as I recall that's why Fromage and Superhatch went with the Mitsu. Can't recall seeing anybody trying whatever is in the UD (maybe those vehicles are newer and more expensive.....?) Seems like the 4bt and 4d34 are both very similar in terms of design and strength.
Thank you for your replay!
Now,i understand why Formage choose 4D34.I also believe that Mitsubishi engine is the best choice among the others.. As i can remember 4D33 and 4D34 are almost the same and they share the same tranny.
Maybe here in Europe we can find some diffrences than in America etc etc.I remember many times to see diffrend engines with the same tranny,factory made,just a diffrend bellhousing and its working!
Here,4D35 its without turbo with mechanical fuel pump,aprox 147hp.
I wonder if in Canada or in USA can find a 4D35 with turbo!!!
And as about fuel consuaption,according to Formage,i think that this engine/transplant,its in very good level! Mine its more thirsty!!!
Cheers
Now,i understand why Formage choose 4D34.I also believe that Mitsubishi engine is the best choice among the others.. As i can remember 4D33 and 4D34 are almost the same and they share the same tranny.
Maybe here in Europe we can find some diffrences than in America etc etc.I remember many times to see diffrend engines with the same tranny,factory made,just a diffrend bellhousing and its working!
Here,4D35 its without turbo with mechanical fuel pump,aprox 147hp.
I wonder if in Canada or in USA can find a 4D35 with turbo!!!
And as about fuel consuaption,according to Formage,i think that this engine/transplant,its in very good level! Mine its more thirsty!!!
Cheers