Nissan Diesels

Verfasst am: 15.01.2007 02:07:39 Titel: Nissan Diesels

Hello everyone, mabye some of you remeber me, I have the black pathfinder.

I recently bought an 1982 nissan 720 diesel 2wd, It runs great with 100,000 miles. The interior and paint are trash though. I want to know if there is anything major to stop me from swapping the diesel motor into an 1985 720 4x4 that originally came with a gas motor?

Over here the diesels are very rare and no one can answer this. Hau mich, ich bin der Frühling

Verfasst am: 15.01.2007 09:42:07 Titel:

Hi bacho!
It´s not so easy to do this, because the transmission is different. So you need an adapter that is not aviable. But it´s posssible to make it by yourself.

Winke Winke

Verfasst am: 15.01.2007 09:57:02 Titel:

If you have the whole donor vehicle it's basically drop in. Have a look at the fuel lines, you might convert to the diesel parts here and have to place the filter etc. in there. You might also change the gas tank over from the diesel to have the return line hooked up that goes back to the tank from the pump. Only tricky thing is the electrics for the glow plugs. If you want to keep the glow function with the key you'll have to change the ignition switch to the diesel one. Easier is glowing by a push button switch.
Keep the tranny of the diesel as the 720 is a divorced t-case type.
BTW, the 720 diesel engine is a slug rotfl

Verfasst am: 15.01.2007 13:37:31 Titel:

Yep, I have 2 complete trucks. So I can use the diesel tranny.

I figured out how slow the diesel is already, I bet its gonna be even worse in the 4x4 truck but for 35 mpg I will put up with it. The pathfinder gets about 8mpg. And most people here now think all the import diesels are cool becasue we dont have very many here.

Verfasst am: 15.01.2007 13:44:42 Titel:

How about importing the diesel engines with trannies from Europe ? I could hook you up with a nice TD27 intercooler or even the ZD30

Verfasst am: 15.01.2007 23:58:44 Titel:

Karsten has forgotten one little thing:
The axle ratios were different: the Z22 has 4,625.1, the SD25 Diesel needs 4,88:1.
So this would be the next thing you have to change...
And this little thing is not really unimportant...

Stefan

Verfasst am: 16.01.2007 03:35:11 Titel:

I did think about that, the rear end should be easy enough to swap. However the H190 in the back is very weak.

each of the trucks are $300 each, far cheaper than importing an engine.

Verfasst am: 17.01.2007 00:20:06 Titel:

The Y 720 (4x4) in Germany are equipped with C200 rear axles, only the 2WD 720 did have 190 rear axles.
I think, it will be a bigger problem for you getting a R 180 front with the diesel-ratio... And without the 4.88 axles,
your Diesel won't do it at all... And if you want to put on bigger wheels, even this isn't short enough...
My Z24 gasoline engine needs the 4,88 for 33" tires, so what will a diesel need???

Best wishes from an Y720 everyday-driver

Stefan

Verfasst am: 26.01.2007 01:49:11 Titel:

Well, I have a plan. I now have both of the trucks in my possesion. The biggest problem that I see is the oilpan that I will have to do custom, not really a big deal. I plan to try it out with the stock gears and see what happens, if the diesel cant do it I will throw the h190 from the 2wd in the back and just not run 4wd. Long term plans will include hi-lux axles geared to 5.29 for my 32's I have. I think an leaf spring yota swap will be easy compared to the swap I did on the pathfinder.

Verfasst am: 27.01.2007 00:19:03 Titel:

Hi!
Yes, I know of your problems with the oil pan. The 4x2 are bigger then the 4x4...
There's not enough space for the .
As my original 2,2litre was worn out, I did put in the 2,4 litre from the Terrano, and even there
the oilpan was too big, so I had to put in the snorkel and pan of the 2,2l. So you have to modify the snorkel, too.

If you start your trying with the original 205 R 15 wheels or the 215/75 R 15 ,
it may work, but you need time... Grins

Much of time...
But if you want to use your 32", your future plan is pretty cool. The hilux-axles sound great for this!
I did an on my car with the C200 front axle and leaf springs with the 4,88 diesel ratios for 31" and up to 33".
And we did it with a spring over conversion to get it a little more high.
So I know what you're talking about...

Stefan

Verfasst am: 03.02.2007 15:27:38 Titel:

Ye, I am gonna cut the oil pan up today. I decided to take the tranny to be rebuilt. In the meantime I have been researching turbo charging the diesel, seems fairly simple and easy compared to some of the things I have done. Anyways, a turbo left over from a fiat project that my dad had happend to be perfect for a 2.2l diesel.

Supposedly, 2.2l 4x4's were available in canada. I tried buying an oilpan from here but had no luck at all.

If I decide that I cant cut the oil pan enough for the , I also have a lift kit that will lower the 4". I am not really wanting to use it though because I dont want the truck lifted 4".

Hopefully with the turbo charger I will be able to pull the 4.10 gears, its been done a couple times over here and supposedly the power difference at 7psi is very much worth it.

I will take some pics of the project today

Verfasst am: 03.02.2007 17:02:43 Titel:

If anyone has an oilpan for the 4x4 I would be interested in buying one and shipping it over.

Verfasst am: 04.02.2007 02:06:05 Titel:

Got some pics.

Motor mounts, diesel mount on the left. The mounts did not bolt up, neither did the gas mounts bolt to the holes there needed to be in. I had to grind off the alingment tabs and elongate one of the holes with the plasma cutter.

I finally got the motor in place after that, without the oil pan of couse. I then started making measurements to see what I will need to take out of the stock oil pan.

Then I cut the oilpan to pieces. I need to remove the motor again to check the oilpan and make a few more measurements. Then I will braze some sheet metal back to it. So far I plan on not having to modify the pick-up.

and a quick pic of the turbo that will go on here as soon as I get the oil pan done.

Verfasst am: 04.02.2007 02:07:51 Titel:

I also had to swap the front case of my trannsmission as the diesel 2wd was too long. The swap was pretty easy though.

Verfasst am: 04.02.2007 14:21:17 Titel:

If you can tell me, what motor you have, I can take a look for an oil pan.
I know some guys with Y720-diesel parts.
Is it the SD23 (in Germany original in the 4x2) or the SD25 (in Germany original in the 4x4)?
I have never heard of a turbo-conversion of a SD25, that worked for a longer time!!! Some have tried it in Germany,
but it didn't last realy long...
In Germany, the first turbo diesel was put in the Terrano: the SD27. But this was much more then a SD25
with just a screwed-on turbo! It was a completely modified engine, and it was never sold in the MD21 pickup.

Stefan

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