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Fondles

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Discussion starter · #1 ·
Seems that D40's come with 2 different power levels....

wikipedia said:
The diesel engine in 4WD models produces 128 kW (172 hp) at 4000 rpm and 403 N⋅m (297 lb⋅ft) at 2000 rpm, with the 2WD models producing less at 106 kW (142 hp) at 4000 rpm and 356 N⋅m (263 lb⋅ft) at 2000 rpm.
Anybody know whats actually different between the 2 ?

I'd love some more power (mine is 2wd model) !!
 
Seems that D40's come with 2 different power levels....



Anybody know whats actually different between the 2 ?

I'd love some more power (mine is 2wd model) !!
Engine fuel management and turbo set up.On D40
Actually WIKI as per usual may be misleading it depends on which models as certainly the facelift ones from 2010 had two power ratings for the 4wd as well 190 and circa 160
 
I can’t speak with authority for any one particular model, but often 2WD pickups are de-tuned compared to their 4WD brothers because the clutch/transmission, diff, and drive shafts are weaker. You’ll probably also find the final drive ratio is different.
 
Discussion starter · #8 ·
I can’t speak with authority for any one particular model, but often 2WD pickups are de-tuned compared to their 4WD brothers because the clutch/transmission, diff, and drive shafts are weaker. You’ll probably also find the final drive ratio is different.
whats been de-tuned, is it ECU ?
 
Discussion starter · #12 ·
Just to be clear, it is practically impossible to fit parts from more powerful models to gain an increase, unless money is no object.
You need to go aftermarket.
So if I got the turbo,ecu and injectors I would see no increase ?

We have run diesel Bt-50 pickups and diesel Mazda 2's in the Thailand supercar series so going aftermarket does not phase me but I'd prefer to go OEM, or fit a Toyota V8.
 
Probably, but fitting an ECU from a higher power model will mean you will have to use the keys, transponder, instrument panel from the donor vehicle just to get past the security. The radio and injectors would need recoding using Nissan Consult too.

I must say I haven't done this, but I suspect there are likely to be a whole load of other hurdles along the way.
 
Discussion starter · #14 ·
Probably, but fitting an ECU from a higher power model will mean you will have to use the keys, transponder, instrument panel from the donor vehicle just to get past the security. The radio and injectors would need recoding using Nissan Consult too.
Ahhh yeah, that side of things I did not consider.

I put a Toyota 1uz in my 2013 Ford Ranger when I noodled some conrods cause it was a lot chpear than a replacement 3.2 lump, Was an easy conversion once we worked out the ECU side of things (kept the Ranger ECU to keep the Ranger electrics happy and ran motor from standalone Toyota ECU).

Speaking to the turbo and tuning guys that do our race cars they say easier and cheaper to go aftermarket injectors and turbo (not sure what to do with pump), run it with a motec diesel ECU and stick a motec dash in however longevity of the 2.5 nissan engine comes into question on stock rods, pistons and headbolts if they lean on it.
 
The lower tune is also often accompanied by a lower compression ratio (which is usually the reason it’s done, rather than as a performance penalty). For example the Toyota 1FD V8 in the 70 Series has a different crankshaft, different injectors, different flywheel and different pistons to achieve much lower compression and cylinder head temps than in the prodigiously more powerful application of the same engine in the 200 Series.
 
Ahhh yeah, that side of things I did not consider.

I put a Toyota 1uz in my 2013 Ford Ranger when I noodled some conrods cause it was a lot chpear than a replacement 3.2 lump, Was an easy conversion once we worked out the ECU side of things (kept the Ranger ECU to keep the Ranger electrics happy and ran motor from standalone Toyota ECU).

Speaking to the turbo and tuning guys that do our race cars they say easier and cheaper to go aftermarket injectors and turbo (not sure what to do with pump), run it with a motec diesel ECU and stick a motec dash in however longevity of the 2.5 nissan engine comes into question on stock rods, pistons and headbolts if they lean on it.
If you search this forum for BlueNavara, he was well over 250 bhp on stock internals.
 
Discussion starter · #17 ·
The lower tune is also often accompanied by a lower compression ratio (which is usually the reason it’s done, rather than as a performance penalty). For example the Toyota 1FD V8 in the 70 Series has a different crankshaft, different injectors, different flywheel and different pistons to achieve much lower compression and cylinder head temps than in the prodigiously more powerful application of the same engine in the 200 Series.
Ford does the same with different pistons.
 
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