sd22 in a 1948 Willys Truck.

[waynosworld]

After a nearly three week stretch of sunless, foggy, 35 degree days, we had a couple of warm days-according to the weather channel we hit 70 degrees yesterday, only the fourth time in history we have hit 70 degrees in January!

So I threw the new SD23 into the Willys. Hooked up a battery and a Ghetto fabricated fuel system (the Sierra Mist bottle) and fired her up:


I still have air in the lines, but she did fire right up for about 30 seconds. Smoked like a steam train (black) but sounded good. As a footnote JDM's return policy only allows you 14 days to return it, and yesterday was day 14.
The SD23 has an interesting combination of parts in common with the earlier SD22 and the SD25. The glow plugs are identical to the SD22 ones-aka the "slow plugs." The starter is slightly different-I will have to switch to the SD22 starter as the SD23 is slightly larger and does not fit over my headers. As mentioned earlier, the IP pump is a Diesel Kiki pump, not the inline one used on the SD22. From what I've read, this pump should be easier to use with a turbo as it does not have the throttle body. On the other hand, I see two things about this pump that I don't like. First, the lack of a hand primer. I love the hand primer, it has saved my bacon several times!
Second, it requires electricity to operate-so if your battery dies, you are S.O.L. The #1 reason I went with the SD22 in my Willys was that I plan on using the "Jeep" in very remote areas, and the SD22 is one of the simpliest, most reliable motors ever made. So I may eventually switch back to the inline pump from the SD22 for the sake of simplicity and reliability.

Updates, you have it moving again?
If you ever want to sell that injection pump and all the hardware to use it, you let me know, I will drive down there to pick it up.

[elminero67]

In the event I do change the IP, I will probably use it to turbo my SD22. If I change my mind, you can have dibs on it.

The truck isn't drivable yet, I ordered a new water pump and am waiting on that. Based on how much salt deposits were in the thermostat housing, it would be good business to change the water pump and all hoses.

Speaking of the deposits on the motor, I don't think this motor came from Japan. All of the rubber hoses were bone dry-just like they get in a real dry climate ( I grew up the deserts of Arizona-our hoses and rubber parts did the same). I also suspect that the motor was near salt water, as it has that same crusty deposits I've seen on vehicles near the ocean.
If I were to guess I'd say Saudi Arabia or United Arab Emirates. That's the only place I can think of that has those conditions and is wealthy enough to throw out good stuff like these motors. Just a guess.

I also wonder what role, if any the IP plays in horsepower rating.
The SD22 is 61 hp. The SD25 is rated at 70hp. The SD23, according to Wikipedia ( I know, couldn't find a better source) is rated at 73hp-three more hp's than the larger SD25. That can't be correct...

[waynosworld]

I have been reading that the inline injection pump is better longevity wise, and the rotory pumps have issues sooner, until just recently I thought that turbocharging the inline pump was impossible to do without long term issues, but that has been shown to be untrue recently.
The thread the guy started about it is gone, I don't know why.

[elminero67]

Got a little ahead of myself-

I've got nearly everything back together and WOULD be ready for a maiden voyage, but for some reason, she only runs for about 30 seconds to a minute, then sputters and dies. If I just let it idle, it will run longer, if I give it throttle, it dies much sooner. It feels like it is fuel starved.

For kicks and giggles I installed a secondary fuel pump, no difference.

Does anyone know if there is a filter/screen inside the Bosch-style VE pumps?

Any ideas? I didn't spend a lot of time on it and am out of free time until next weekend.

[waynosworld]

How did you connect up the fuel filter system?

Got a little ahead of myself-

I've got nearly everything back together and WOULD be ready for a maiden voyage, but for some reason, she only runs for about 30 seconds to a minute, then sputters and dies. If I just let it idle, it will run longer, if I give it throttle, it dies much sooner. It feels like it is fuel starved.

For kicks and giggles I installed a secondary fuel pump, no difference.

Does anyone know if there is a filter/screen inside the Bosch-style VE pumps?

Any ideas? I didn't spend a lot of time on it and am out of free time until next weekend.

[elminero67]

Got her running, let her idle for an hour. still need to find a longer throttle cable before I can drive it.

Turns out that the Bosch-style injection pump does does need a secondary pump. she will run well for about a minute (if primed) without the secondary pump, but that's it.

the new motor sounds great, very responsive and very little smoke after the initial start-up. I don't know if there is any science behind it, but it sounds much louder than the tired SD22, specifically it has that gravelly knock that diesels have. The 250,000-300,000 mile SD22 didn't make much of that noise-could it be that the low-mileage SD23 has that noise because it is so much tighter?

looks like I owe JDM an apology. In hindsight they were great to work with, the motor was as advertised and shipped quickly.

[waynosworld]

No, that is not true, I have no pump on my VE type injection pump, and it runs fine, it has it's own feed pump.

Got her running, let her idle for an hour. still need to find a longer throttle cable before I can drive it.

Turns out that the Bosch-style injection pump does does need a secondary pump. she will run well for about a minute (if primed) without the secondary pump, but that's it.

the new motor sounds great, very responsive and very little smoke after the initial start-up. I don't know if there is any science behind it, but it sounds much louder than the tired SD22, specifically it has that gravelly knock that diesels have. The 250,000-300,000 mile SD22 didn't make much of that noise-could it be that the low-mileage SD23 has that noise because it is so much tighter?

looks like I owe JDM an apology. In hindsight they were great to work with, the motor was as advertised and shipped quickly.

[waynosworld]

You must have had air in the fuel filter system that had to purge itself.

[elminero67]

I think you are correct. It never ceases to amaze me how much of a pain it is to get air out of the lines.

[waynosworld]

I think you are correct. It never ceases to amaze me how much of a pain it is to get air out of the lines.

I think that it not having a primer is stupid, but I got mine going right away, I made sure that everything was full before trying to start it.
On my inline pump, every time I have a line crack and start spewing fuel, the moment I shut down the engine, air gets in the line, and the freaking thing would only run for a minute, and I would spend the next 1/2 hour just trying to keep it running, the last time I learned to crack all the banjo fittings open and prime it while doing that, once I do that I can keep it going.
I have no idea if an external fuel pump will hurt your VE pump or not, that is something I know nothing about, but would be interested in finding out/knowing.

[asavage]

Found this Datsun 720 (FSM) shop manual on E-Bay. I have this same one, bought it back in 81 when I bought the truck. Has the Diesel engine info in it.

Be sure to contact the seller to make sure it has the Diesel info in it.

None of the Nissan 720 or Maxima FSMs in 1981 have the diesel information; they were broken out into a separate diesel supplement booklet.

All 1982 FSMs have the diesel info integrated.

I have two spare 1981 720 FSMs that I'd give away to someone (no SD info in them) and one 1986 720 FSM that does have SD25 info ($25).

[asavage]

Wouldn't I need to bore it out to fit the sleeve?

I don't know for sure how the old sleeves/liners are taken out, but it is likely done with some kind of press or a hammer . . .

If you have the FSM, it shows the tools to remove and reinstall liners.

Galen posted a video on installing liners.

TDI_Joe built his own tool.

[waynosworld]

This is hilarious, after telling you that you did not need a fuel pump for your engine, I had to use one to get my VE type SD22 engine running today, it would not keep running, after about a minute of idling rough it would die, and it would not rev at all while idling, and when I was opening everything up bleeding it, I got nothing, so I used an electric pump to get the fuel flowing, and it started perfect, best it has started in a long time, once it was warmed up, I removed the electric pump and started it, and it ran fine.

The diesel gods just gave me a warning, not sure what the warning was for yet, but it will likely be clear to me someday.

[elminero67]

That's funny. While researching somewhere on the internet I had read that Bosch-style VE pumps require a secondary 7-9 psi pump at the fuel tank. I don't recall if it was a site specific to SD motors or not.

I'll look and see if I can find that source (since it was on the internet it must be true!).

I don't know much about fuel pumps, but my 64 Nissan Patrol (best small 4x4 made imho), started poorly and became fuel starved on the highway. I replaced the fuel pump, installed new lines and filter. No change. I installed a secondary electric pump at the tank, operated by a toggle switch. On cold starts and when it got starved on the highway, I'd just turn on the electric pump. Other times the mechanical pump would just pull fuel right through the electric pump like it wasn't there.
I'll try that with the SD23.

Al, I would like to buy that FSM manual for the 86 720. I'm not in a hurry. Will send you a pm.

[plenzen]

I thought I was posting this here in this thread but I guess I posted it back in the old thread.

Not sure how I did that but here it is where I wanted it.

BTSOM shrug

Paul

_______________________________________________

I have had a little lift pump on my SD with the VE for 6+ years now.

I posted about it here ( 7th post down)

http://nissandiesel.dyndns.org/viewtopi ... r&start=15

I have it hooked to the ignition switch in the run position.

I have it hooked to suck through the pre filter and then push through the water trap and the fuel filter.

Works very well and changing fuel filters is a breeze.

You can read the specs on it in the posting.

The beauty of it is that it will flow fuel it if its unplugged as well.

I have spoken with the fuel injection rebuild people about it and gave them the specs on the pump and they said there would be no issue using it.
It is used on Yanmar industrial diesels. Not sure who the manufacturer is on it though.
It looks like an old Chevy type inline metal gas filter only twice the size.
_________________
Retired Pauly
6 Saturdays and 1 Sunday every week
1987 D21-J SD25 KC
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