Engine Number to Voltage

Hello All,

I am a new member, well part there of because I bought a deceased estate vehicle which has a Nissan SD33 diesel and gearbox in it. The previous owner was close to finishing the conversion when he took ill and never recovered. I am missing a starter motor and all the air cleaner components that bolt on to the throat.

This is my first foray into Nissan Diesels so could someone please let me know what year of manufacture my engine was and whether it is a 24 or a 12 volt system?

The engine number is SD33 119233 on the driver's side of the motor.
The head has the number 20825 on the passenger side towards the fan and,
The passenger side block has K5A cast into it.


Kind Regards
Lionel

Sorry don't know to tell by the engine numbers.

If you have a look at the alternator and glow plugs it should be written on them.

http://en.wikipedia.org/wiki/Nissan_SD_engine

And I think you'll find it's 24v

http://www.ebay.com.au/itm/Nissan-MQ...-/131015386958

Welcome to the Forum,
Jump in and enjoy

Hello All,

Thank you for the responses. I have taken the alternator off the engine. There is an identification plate however the paint and other layers have come off making it impossible to read.

Do these photographs look familiar to any MQ - MK Nissan Patrol owner and if so is it a 24 or a 12 volt system? Okay officially the "MK" designation does not exist...

Where would the voltage be written on the glow plugs?

Kind Regards
Lionel

Hello All,

Apart from the air cleaner unit can people see other stuff that is missing which is obvious to you for those more familiar with these engines than I am?

Hopefully I do not offend anyone's sensibilities by posting a photograph of Hunter when I first saw him in the flesh after winning it sight unseen on eBay. No one will probably write to me now :icon_driving:

This is pretty much what condition I bought the vehicle in a while ago. According to Wikipedia (http://en.wikipedia.org/wiki/Nissan_SD_engine) the SD33 was used in the following vehicle as standard: UD 3400 series light truck, large forklifts, Marine applications, in International Scout offerings from 1976 to 1979, as well as the Jeep CJ-10/Cj-10A flightline tow vehicles from 1985 to 1986. The Scout-based Monteverdi Sahara was also offered with the SD33. Th SD33T is a turbo-charged 3.2 L (3,245 cc or 198.0 cu in) straight-six diesel engine that was used in 1980 for the power plant in 6,400 International Harvester Scout II's. So I would not be the only hybrid Nissan SD33 owner around which did not have the engine in a Nissan.

The Nissan SD33 Land Rover conversion is not that uncommon as the standard 2.6 litre six cylinder Land Rover made petrol motor was not the most economical motor on the road at its time. Okay putting in an SD33 was not as popular as putting in a Holden six cylinder petrol motor.

I just need to work out what parts the engine is missing apart from the Starter motor and air cleaner, find out whether it is a 24 volt or a 12 volt system so I can breath life back into the vehicle.

Kind Regards
Lionel

Hi Lionel,

I am not the expert on the SD33, as I never owned the Diesel, but I think it will be the 24V Version.

Check out the Wiki Page link
http://en.wikipedia.org/wiki/Nissan_Patrol

under the MQ section, and I think that might be the best help you can get.

It looks like a fairly early version motor, which could also point towards the 24V system

Mic

If you take out a glow plug and hit it with a wire buff, it should have 24v stamped on it. Or the land rover is a 12v system and your missing a starter motor, set the eng up as a 12v system.

Have fun lookes like a good project :-)

It should be stamped in the hex part of the glow plug.

Going by the size of the stator in the alternator I think it's going to be 12 volts.

Your not going to want to run the Landy on 24 volts. I agree with spoonie, set it up for 12 volts.

Quote:

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Originally Posted by Yendor

It should be stamped in the hex part of the glow plug.

Going by the size of the stator in the alternator I think it's going to be 12 volts.

Your not going to want to run the Landy on 24 volts. I agree with spoonie, set it up for 12 volts.

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Hello Yendor,

Thank you for the information on how to ID the glow plug.

I think I have will be making a short trip out to the auto electrician and get the alternator checked and to get the voltage confirmed, also to see how good the alternator is as i have never had the engine or the electrics running. Hunter is a 100% unknown quantity.

Hopefully it is a 12 volt system. If it is a 24 volt I can live with this. I will just run a circuit to the starter motor and the glow plugs from the alternator and then have a 24 volt transformer down to 12 volts and run all the other Land Rover wiring from that point as per normal. That way I will not have issues with fuses or dash lights, fan, and the like.

Out of interest are the headlights on the early 24 volt MQ Patrols 24 volt bulbs? Anything including captive glow worms are brighter than the original Land Rover lights! So if it is a 24 volt system I may upgrade the headlights. Mr Lucas the maker of Land Rover electrics = the Prince of darkness.

One concern is if Hunter is a 24 volt system and I change the alternator and starter motor to volt components is their compatibility with the currently fitted flywheel's ring gear. Does anyone know if the ring gear is different on the flywheel between the 24 volt and the 12 volt powered starter motor? if there is a difference where would I source a different flywheel it sort of starts having a domino effect.

Or maybe the gear cog on the 24 volt can be transplanted on to the 12 volt starter motor so it will mesh with the ring gear on the flywheel without needing to work on the flywheel at all???

Hopefully, I will have the voltage sorted out by the auto electrician by the end of the week and I can plot my actions from there. Cross fingers for a 12 volt - it would be a little more complicated and I would have to rig up a system for the second battery that a 24 volt system requires. There are series/parallel switches available where the 24 volts are only running at start up and the 24 volt glow plugs can be exchanged for 12 volt ones. Gee it just gets more complicated...

I will let you know the auto electrician's findings ... not long after I know.

Kind Regards
Lionel