D4BH engines

Nulla

Nulla

Active Member
has anyone installed D4BH with intercooler on a L300. I have a Delica JB500 thinking of upgrading the engine in the future I am just starting the research. I am aware that some up grade to the D4BF. thank
 
Well, to quote @Growlerbearnz, in this thread...
Growlerbearnz said:
They're the same engine with different inlet manifold and (maybe?) slightly larger turbo, but the significant difference is that the D4BH has an electronically-controlled injection pump (Bosch VE-EDC). It's still mechanical injection (not common-rail) but where the D4BF/4D56 has an accelerator cable the D4BH has a big electrical plug. It needs an ECU to run it, which you might get from a late 90s model L200/triton, or maybe a Pajero (but don't quote me on those).

I'm not hugely familiar with the electronically-controlled 4D56 engines, but I've heard that the injection pump isn't all *that* hard to control if you're handy with coding microcontrollers:

Making Diesel Controller - rusefi.com
http://dmn.kuulalaakeri.org/dmn-edc/

ECU controlled injection is how the D4BH makes more power then the D4BF/4D56. The ECU can adjust injection timing to make power when the engine's running normally, and retard the timing to protect the engine when it's running hotter than usual. It can inject more fuel when the engine's cool, and reduce the fuelling as EGTs rise. The mechanical D4BF/4D56 has to be tuned conservatively for safety all the time, even when it's cold.
Click to expand...

So, basically, you would need to get an ECU that could control the engine, sensors that the ECU needs, an electronic accelerator pedal, wiring, tuning, etc... to get 15-16 more horsepower and 24-26 more ft/lbs of torque than a stock D4BF engine.

If you were doing that level of work, why not put in a much more powerful engine?
VW pd130 (1.9 tdi ~180hp and 300ft/lb)
Or Holden Commodore V6
Or 1JZ-GTE
Or Twin-Turbo Ford 308 V8
 
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sck_nogas said:
Well, to quote @Growlerbearnz, in this thread...


So, basically, you would need to get an ECU that could control the engine, sensors that the ECU needs, an electronic accelerator pedal, wiring, tuning, etc... to get 15-16 more horsepower and 24-26 more ft/lbs of torque than a stock D4BF engine.

If you were doing that level of work, why not put in a much more powerful engine?
VW pd130 (1.9 tdi ~180hp and 300ft/lb)
Or Holden Commodore V6
Or 1JZ-GTE
Or Twin-Turbo Ford 308 V8
Click to expand...
thank you this is very helpful. I am researching now for a future swap. I am not sure 16 HP and 26 ft/lbs torque is worth all that trouble between the D4BF and D4BH. What is the difference between the 4D56 and D4BF?

Also I would want to take it to someone who has done it before. Making this swap is a bit over my head and I don't have the space for it. thx
 
Nulla said:
thank you this is very helpful. I am researching now for a future swap. I am not sure 16 HP and 26 ft/lbs torque is worth all that trouble between the 4DBF and 4DBH. What is the difference between the 4D56 and 4DBF?

Also I would want to take it to someone who has done it before. Making this swap is a bit over my head and I don't have the space for it. thx
Click to expand...
The D4BF is the 4D56, sort of... "Over the years Mitsubishi improved the 4D56, and the D4BF engine incorporates all the improvements and upgrades Mitsubishi ever made, and then some."
The differences between the Mitsubishi 4D56 and the Hyundai D4BF are...
  • Engine block is shared with the higher-output D4BH
  • Extra ribs on the block casting
  • New brackets to stop things flexing
  • Garrett GT1749 water-cooled turbo
  • Higher pressure injectors
  • Better pistons for a more efficient burn
  • 3-bolt rocker cover
  • Alloy half-moon seal to reduce oil leaks
  • Hyundai 75A alternator is a semi-smart unit
Plus, it's brand new vs. 28-30 years old.

If only the D4BF install was well documented. :)
 
sck_nogas said:
The D4BF is the 4D56, sort of... "Over the years Mitsubishi improved the 4D56, and the D4BF engine incorporates all the improvements and upgrades Mitsubishi ever made, and then some."
The differences between the Mitsubishi 4D56 and the Hyundai D4BF are...
  • Engine block is shared with the higher-output D4BH
  • Extra ribs on the block casting
  • New brackets to stop things flexing
  • Garrett GT1749 water-cooled turbo
  • Higher pressure injectors
  • Better pistons for a more efficient burn
  • 3-bolt rocker cover
  • Alloy half-moon seal to reduce oil leaks
  • Hyundai 75A alternator is a semi-smart unit
Plus, it's brand new vs. 28-30 years old.

If only the D4BF install was well documented. :)
Click to expand...

here is what I found in the power difference between the 4d56 and d4bf. I can only find d4bf intercooled. I did not see an intercooler on the documented link.
4D56 turbo
Power - 84 PS (62 kW) at 4200 rpm[11]
Torque - 201 N⋅m (148 lb⋅ft) at 2000 rpm

D4BF intercooled turbo
Power - 99 hp (74 kW) at 4300 rpm
Torque - 177 lb⋅ft (240 N⋅m) at 2000 rpm
 
Rewiring & splicing in a wiring harness from a donor is not for the feint of heart.
If you do so, ensure you can obtain complete wiring diagrams of the donor vehicle’s harness & ECU pin outs. And if possible, the donor vehicle you pulled the ECU & harness from in its entirety. It’s those damn little bits you end up needing.
 
Nulla said:
Thx I cannot find the 4d56 on the site. I am trying to find out how much more hp and power do I gain with 4DBF.
Click to expand...
The 4D56 is the name of the OLD Mitsubishi engine that came with your car. After Mitsubishi made that engine for a few years, they sold the design/molds to Hyundai, where they did some more upgrades to it and renamed it the NEW D4BF!!!

If you look at a D4BF engine block it still says 4D56 on it, since the mold didn't change.
 
sck_nogas said:
The 4D56 is the name of the OLD Mitsubishi engine that came with your car. After Mitsubishi made that engine for a few years, they sold the design/molds to Hyundai, where they did some more upgrades to it and renamed it the NEW D4BF!!!

If you look at a D4BF engine block it still says 4D56 on it, since the mold didn't change.
Click to expand...
What is the difference in power output between the two engine. How much hp and torque would I gain with 4DBF?
 
Nulla said:
What is the difference in power output between the two engine. How much hp and torque would I gain with 4DBF?
Click to expand...
Technically, there is ~0% increase in power difference between a BRAND NEW 4D56 and a BRAND NEW D4BF. It's the same engine, mostly.

But, you don't have a brand new 4D56, you have a 29 year old 4D56 with an old turbo, slightly leaking piston rings, worn bearings, higher friction sleeves, carbon build up on injectors, etc, etc, etc....

With a new D4BF, you can better tune the engine and get more power out of the same potential power since the parts are newer. Plus with some of the improvements made (water-cooled turbo, stronger engine block, higher pressure injectors, better pistons) you can more safely increase the power output via tuning. Less chance of blowing up parts.

Could you replace your turbo, rebuild your engine, machine the crank, replace the injectors, replace the valves, rebuild the head, etc, etc, etc on your existing engine to get close to the same safety level for tuning of a new D4BF? Sure, I'd say 90-95%... But, you'd also spend at least as much (if not a lot more) in parts and labor to do it. The easier, cheaper option can be an engine replacement.
 
sck_nogas said:
Technically, there is ~0% increase in power difference between a BRAND NEW 4D56 and a BRAND NEW D4BF. It's the same engine, mostly.

But, you don't have a brand new 4D56, you have a 29 year old 4D56 with an old turbo, slightly leaking piston rings, worn bearings, higher friction sleeves, carbon build up on injectors, etc, etc, etc....

With a new D4BF, you can better tune the engine and get more power out of the same potential power since the parts are newer. Plus with some of the improvements made (water-cooled turbo, stronger engine block, higher pressure injectors, better pistons) you can more safely increase the power output via tuning. Less chance of blowing up parts.

Could you replace your turbo, rebuild your engine, machine the crank, replace the injectors, replace the valves, rebuild the head, etc, etc, etc on your existing engine to get close to the same safety level for tuning of a new D4BF? Sure, I'd say 90-95%... But, you'd also spend at least as much (if not a lot more) in parts and labor to do it. The easier, cheaper option can be an engine replacement.
Click to expand...
Thx my engine only has 45,000 mile on it, 73KM. Since my millage is low, for now, it is probably better to twik my engine to increase power i.e, bigger down pipe, inter cooler and later doing the adjustment to increase power. Just need to figure out cost of all this upgrades and whether bolt on intercooler is available. I did see somewhere a bolt on down pipe, I have not seen a bolt on intercooler. Then later think of changing to 4DBF. what do you think? thx again for your help.
 
I've recently installed a new D4BF engine in my 1989 Delica after the old engine disintegrated on a long high speed expressway trip. The performance of the new engine is brilliant. Still no speed demon, but at least you can keep up with traffic flow both around town and up to 100 kph highway speeds.
If only I could find an air con support bracket and tensioner pulley to put on I'd be really happy.
The process is much easier if you drop the whole front out out of the bottom of the vehicle while on a hoist.
We took the opportunity to then recon the steering rack and install a 2 inch lift at the same time.
 
L300Wollongong said:
I've recently installed a new D4BF engine in my 1989 Delica after the old engine disintegrated on a long high speed expressway trip. The performance of the new engine is brilliant. Still no speed demon, but at least you can keep up with traffic flow both around town and up to 100 kph highway speeds.
If only I could find an air con support bracket and tensioner pulley to put on I'd be really happy.
The process is much easier if you drop the whole front out out of the bottom of the vehicle while on a hoist.
We took the opportunity to then recon the steering rack and install a 2 inch lift at the same time.
Click to expand...
Drive smoothly with higher rpm on uphill.
You can move your current AC bracket and ac tensioner pulley to D4BF.
 
My experience is good, I had the 4d56 replaced by the Hyundai engine on an L200 with 115 hp (85 kW) which meant to keep all the peripherals like turbocharger, injection pump, intercooler, and down pipe. It's been a plug-and-play-job except for the oil pan and the oil tube. The car and its engine are always heavily charged with an 800 kg weighing cabin on the truck bed and 4 persons in the double cab. Yet it lasts since 100,000 km now with no signs of wear (i.e. oil consumption).
Greeting from Munich!
 
Greetings from Australia Just curious to know if anyone has swapped in a 2.8TD from an L400
 
sck_nogas said:
The D4BF is the 4D56, sort of... "Over the years Mitsubishi improved the 4D56, and the D4BF engine incorporates all the improvements and upgrades Mitsubishi ever made, and then some."
The differences between the Mitsubishi 4D56 and the Hyundai D4BF are...
  • Engine block is shared with the higher-output D4BH
  • Extra ribs on the block casting
  • New brackets to stop things flexing
  • Garrett GT1749 water-cooled turbo
  • Higher pressure injectors
  • Better pistons for a more efficient burn
  • 3-bolt rocker cover
  • Alloy half-moon seal to reduce oil leaks
  • Hyundai 75A alternator is a semi-smart unit
Plus, it's brand new vs. 28-30 years old.

If only the D4BF install was well documented. :)
Click to expand...
Internals are the same as a regular 4D56, had them side by side. Piston, connecting rods and crank are identical from the D4BF as the 4D56. There are extra ribs in the block but there isn’t any extra brackets that I could see.
 
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