Nissan D21 SD25

SD diesels were widely available in the US in the 1981-86 Datsun/Nissan 720 pickups, and in Canada through '87 in the D21 pickup.

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dieselfanatic
Posts: 2
Joined: 12 years ago

Nissan D21 SD25

#1

Post by dieselfanatic » 12 years ago

I'm looking to buy a D21 SD25 in Canada but I'm having a hard time finding one. I'm curious to this model. I do and have owned diesel cars including VW TDI's and Mercedes diesels. Is the SD25 a turbocharged engine? How reliable are they? Do they have any know problems? Are parts hard to find and to service?

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philip
Posts: 1494
Joined: 14 years ago
Location: Southern California, USA

Re: Nissan D21 SD25

#2

Post by philip » 12 years ago

The SD23 and SD25 are not turbo. If you want that version, find the TD-25 and TD-27.

The SD23/25 have 5 crankshaft journals ... that are the same diameter of the SD22 but are narrower. The SD22 has three mains that are quite a bit wider ... same as the SD33 six cyl.

There are a number differences in the SD23/25. Both are very robust. "Problems" are due to neglect. Keep the oil changed, keep the cooling system good, keep nitwitts away from electrics.

In ANY SD engine, you need to have the Nissan Motor Manual because nobody else handy is going to know anything useful.

And as I have said before ... a D21 with an SD25 does not really exist. :wink:
Last edited by philip 12 years ago, edited 1 time in total.
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

dieselfanatic
Posts: 2
Joined: 12 years ago

#3

Post by dieselfanatic » 12 years ago

philip wrote: And as I have said before ... a D21 with an SD25 does not really exist.
Why not?

REDNECK
Posts: 51
Joined: 13 years ago
Location: Alberta, Canada

#4

Post by REDNECK » 12 years ago

listen to big p..............he knows,.....i'm one of the three on this forum that owns one. unless you are lookin for a challange i suggest not finding one. parts non-existance, maintanance- full time, you have to give the s/n # when you go to nissan, because it does not come up automaticly in their system...........i know they are out their, one is making a nissan mech. out of another on this fourm! parts are VERY hard to find, after all is said and done at the end of the day.........some mecanixs, are up for the challange and will never be rid of their truck, i'm one, on a MISSION, 1mil on the od. good luck!
87 D21,SD25.
may she NEVER stop smokin!

greaseburner
Posts: 15
Joined: 13 years ago
Location: southwest Manitoba, Canada

#5

Post by greaseburner » 12 years ago

I found yet another one for sale here in Brandon that I'm going to look at. No idea what condition, but having a parts truck never hurts. I like my little truck, but it does have it's problems.
1987 Kingcab SD25
Dave

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philip
Posts: 1494
Joined: 14 years ago
Location: Southern California, USA

#6

Post by philip » 12 years ago

Did you ever find the Nissan D21 truck with details about the SD25 included?
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

seasemesnap
Posts: 20
Joined: 8 years ago
Location: Richmond,B.C.

#7

Post by seasemesnap » 7 years ago

Im another guy that has 87 d-21 with a factory sd25 love my truck but i have to take it off road to fix a bunch of small problem windshield,oil leaks,brakes.
fix frame and crossmember . Love to get it all road worthy again
I have a service manual for nissan trucks.
Have a 720 sd 25/transmission, has 30,000 km and wiring harness .
If i can not reserect may sell it all
40 year old import loving adolesent.

plenzen
Posts: 867
Joined: 12 years ago
Location: Cochrane Alberta Canada

#8

Post by plenzen » 7 years ago

How did the cross member get busted ?

Sounds like it had a hard life.

Still if you can keep it going they are nice little trucks.

Mine lived it's original life out there and loves to return to the nice sea level think air. Here at 4000+ feet it's a little on the anemic side but will still drive it till there is nothing left.

Paul

http://nissandiesel.dyndns.org/viewtopic.php?t=1427
Retired Pauly
Problem with being retired is that you never get a day off.
1987 D21-J SD25 KC
KJLGD21FN

Modsqwad
Posts: 8
Joined: 8 years ago
Location: Victoria BC

D21/sd25 for sale

#9

Post by Modsqwad » 7 years ago

Hi guys, my 87 d21 sd25 is for sale.
Good motor
New glow plugs (slow acting)
250 k on motor
100 k on rebuilt 5speed
Body is a bit rough but save able extra cab
Good tires
Located in Victoria BC
Asking 2000$ obo
Call me at (250)896-5444

Andy
PS Comes with manual

dn29626
Posts: 249
Joined: 10 years ago
Location: Anderson, SC

Re: D21/sd25 for sale

#10

Post by dn29626 » 7 years ago

Modsqwad wrote:...sd25 is for sale...Located in Victoria BC...Asking 2000$ obo...

Andy
Pricey, but to far from me anyway.
82 King Cab 2wd (nice)
82 Reg Cab (body damage)
Anderson , SC
Since Fall 2009

Modsqwad
Posts: 8
Joined: 8 years ago
Location: Victoria BC

#11

Post by Modsqwad » 7 years ago

It does say OBO.

dn29626
Posts: 249
Joined: 10 years ago
Location: Anderson, SC

#12

Post by dn29626 » 7 years ago

Yes it does.
82 King Cab 2wd (nice)
82 Reg Cab (body damage)
Anderson , SC
Since Fall 2009

niseamer
Posts: 19
Joined: 6 years ago
Location: Ucluelet, B.C. Canada

D21 SD25 still going

#13

Post by niseamer » 6 years ago

seasemesnap wrote:Im another guy that has 87 d-21 with a factory sd25 love my truck but i have to take it off road to fix a bunch of small problem windshield,oil leaks,brakes.
fix frame and crossmember . Love to get it all road worthy again
I have a service manual for nissan trucks.
Have a 720 sd 25/transmission, has 30,000 km and wiring harness .
If i can not reserect may sell it all
I also have an 87 D21 with an SD25...but I am about to change it for another SD25. The "new" one has an inline IP so am assuing it is pre 87 out of 720.
The current engine has 500,000 km on it and is getting a little tired, though still runs well.

If this all works out, I may sell the older engine if someone wants a project.

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