P40 Question in MK

[Patroldude]

I have seen a couple of MK and MQ's with the P40 motor in it and was wondering if anyone had seen them with th e5 speed in em? Or did they only come out with the 4 speed?

Cheers

Mk

[patrolmad]

They cam out with a 5 speed in late 1984 / early 1985.

[MQ080]

Good luck finding one...

[Patroldude]

Luck? Man - I can find anything pretty much if I put my mind to it - a mates after one and will be most happy if I find one for him hey...

Just not sure if it exists thats all.

Mk

[MQ080]

I can find anything pretty much if I put my mind to it

Find me a MK SD33T SWB in good condition then

[patrolmad]

They do exist. I owned one in 1985.

[MQ080]

They do exist. I owned one in 1985.

[Patroldude]

MQ080 - Shannon yeah? I thought I sent a PM to you earlier but I guess not.

Genuine second owner 50th Anniversary TD Mk SWB - current owner since 1987 since 35000kms on the lcock... totally re built. New ported Nissan Head, New 5 speed, spring lift etc - all genune 50th Anniversary bit - like head light washer arms etc etc, power windows from factory (yes - not GQ stuff - factory MK stuff) etc etc...

Interested?

Oh its lifted with custom bar work etc - engineering shop ower uses it as daily driver since he bought it...

Let me kno n I can hook u up.

Mk

[Screwy]

The p40 motor is rare in the MQ/MK series, very uncommon.

mabe 1 in every 10 made.

with a 5 speed in it would be something like 1 in every 20

u wont find a shorty with one at all.

a LWB is possible to find but good luck

[Patroldude]

Yeah - its cool. Already found one but he don' really wanna sell it and its in a ute.... mmmmmm

He just needs more threats made.... I mean money offered

Still look out for em but.

Mk

[giffo]

SHANNON & I CAN MAKE HIM SELL.
WE HAVE WAYS OF MAKING PEOPLE TALK, I MEAN SELL. PEPPER SPRAY, GLOCKS, BATONS. HEAPS OF VAYS YEEESS?

[Screwy]

SHANNON & I CAN MAKE HIM SELL.
WE HAVE WAYS OF MAKING PEOPLE TALK, I MEAN SELL. PEPPER SPRAY, GLOCKS, BATONS. HEAPS OF VAYS YEEESS?

Hmm

[stevelb1]

Patroldude did you have any luck finding that P40 5speed, there were only 800 P40 motors were bought into Australia by Nissan mainly most went to mining companies as they did not like the smaller 2.8.

My own '85 is a P40 with a 5 speed in it[img]http://img293.echo.cx/img293/8421/img1513c6wa.jpg][/img]

[meiamaro]

I also have a mk p40 5sp ute.

Not such a bad thing. Climbs well!

Ian.

[Patroldude]

Yeah I finally found one but don't have the funding hey - oh n shannon if ya interested I can sell you m,y SD33T SWB hey.... I have a project truck coming in this weekend I won't be afraid to trash if I have to ..... my TD is too nice for that!!!

Mk

[stevelb1]

Im seriously thinking of transplanting the P40 with a 302/351, should cost me about $2000 all up for the conversion.

My rig is actually a LWB Wagon fitted with the 2 barn doors.

[Bucks2]

Hi Guys
I have an MK LWB with P40 & 5 speed, just about to put the 5 speed back in after new bearings etc!!
Would,nt change it for anything gr8 Truck.
Good luck finding a good one eh!!!
Cheers Mike.

[RMP&O]

Im seriously thinking of transplanting the P40 with a 302/351, should cost me about $2000 all up for the conversion.

My rig is actually a LWB Wagon fitted with the 2 barn doors.

If you have the barn doors in rear it is a van model. With the P40 my hunch is you have the H233 full floating rear diff. Is that true??

P40 is extremly common in other parts of the world. Most 3rd world countries got heaps and heaps of P40's.

The P40 is a great motor....dating back as far as the 1920-1930's. In the 1950's Patrol the P40 was the NC series, in the G60s it is the plain old P engine and in the MQ/MK's it is the P40 but it is basically all the same motor. I believe it was the Graham Auto company of the USA that sold Nissan the rights to the NC (P40) engine back in the 20's/30's. Bit of history there for ya...

[David_S]

The P40 is a great motor....dating back as far as the 1920-1930's. In the 1950's Patrol the P40 was the NC series, in the G60s it is the plain old P engine and in the MQ/MK's it is the P40 but it is basically all the same motor. I believe it was the Graham Auto company of the USA that sold Nissan the rights to the NC (P40) engine back in the 20's/30's. Bit of history there for ya...

I agree it is a great motor, though I once broke the crankshaft just in front of the front bearing. Managed to limp the 1500km home across the desert. (A crankshaft is not the sort of spare you carry around in the back!) I have changed my 4 speed for a 5 speed from an SD33T. Goes well.

I always thought that the P40 was based on a 1948 Austin motor which Nissan bought and then improved improved - e.g. 7 main bearings etc????

I had mine reconditioned a while back - on completion it would idle so smoothly that we could balance a 20c coin on edge on the rocker box.

[RMP&O]

The P40 is a great motor....dating back as far as the 1920-1930's. In the 1950's Patrol the P40 was the NC series, in the G60s it is the plain old P engine and in the MQ/MK's it is the P40 but it is basically all the same motor. I believe it was the Graham Auto company of the USA that sold Nissan the rights to the NC (P40) engine back in the 20's/30's. Bit of history there for ya...

I agree it is a great motor, though I once broke the crankshaft just in front of the front bearing. Managed to limp the 1500km home across the desert. (A crankshaft is not the sort of spare you carry around in the back!) I have changed my 4 speed for a 5 speed from an SD33T. Goes well.

I always thought that the P40 was based on a 1948 Austin motor which Nissan bought and then improved improved - e.g. 7 main bearings etc????

I had mine reconditioned a while back - on completion it would idle so smoothly that we could balance a 20c coin on edge on the rocker box.

I am pretty sure it is from an old USA design. A guy who visits my forum did all the work to map out the history. He is from Equador and has owned the same Patrol since 1967. His knowledge is amazing. He provided links and so forth to back up his therory on the P40 (P) engine and it's histroy/origin. Unfortunatly I think the post was lost when my forum got hacked.

There is no doubts Austin had it's ties to Nissan but I believe the old inline-six is of USA origin. Wich I had to post to link...

Amazing you drove home 1500k's with a broken crankshaft! How many motors do you know that could do that!?

I have always thought the P40 to SD33 uses the same bolt pattern/bell housing. Since you have done the swap is this correct? Did the 5spd from the SD33 bolt right up to the P40?

BTW, the P40 is nearly identical to the P engine put in G60's for 20 years. In fact 80-90% of all parts interchange.

[David_S]

Interesting, RMP&O, to think the P40 engine goes back that far. Maybe Austin got the basic design from Graham Auto? Would be interesting to know. I believe the Landcruiser's engine of the same vintage was based on the Chevy Blue Flame - at least I think that is what it was called.

Yeah, it was pretty amazing to get home with the broken crankshaft. It was a clean break through the flange at the very front, so the shaft was still supported by the bearings. It made a bit of a noise though - I thought maybe the release bearing had shattered, it never entered my head it was the crankshaft. I heard it break - made an almighty bang! Took us quite a while to track it down after we got home.

Yes the SD33 bell housing is the same as the P40 and bolts straight up. My original P40 (with 4 speed) bell housing was alloy but the SD33 (with 5 speed) was steel. Although much heavier I used the SD33 one. The only modification I had to make was to the pilot bushing in the flywheel and the matching gearbox shaft. The P40 bush is 15/16"OD x 3/4"ID x 1" long whereas the SD33 is 5/8"ID and because of the different engine lengths the SD33 gearbox shaft was longer than the P40 and had to be shortened
slightly - I can't remember by how much but I took a lot of careful measurements before I cut it! The only problem I had was that I made the new pilot bush a bit too close a fit on the shaft so I had trouble changing gear. Once I reamed it out to a loose fit I had no further problems.

I am at present planning/working on converting the engine to fuel injection using a throttle body off a Ford Falcon and a Megasquirt ECU. I hope it will solve problems of flooding on prolonged steep hill work. Might even try an EDIS setup for the ignition if I can find a suitable toothed wheel, sensor and module - they seem hard to find here.

Never knew Roy Rogers drove a Patrol

Cheers, david

[RMP&O]

Roy Rogers was the Datsun spokesman for Nissan here in the USA during the 1960's. Nissan USA gave him several 520 pickup trucks and a Patrol for his advertising support. Sad thing is we have no idea what ever happened to his Patrol....

Fuel injection for sure will rock on the P40. But I have had great success on the older P engine by simply using a Weber carb. I fitted a Weber using an adaptor plate and all my probs on inclines went away.

The Graham company sold Nissan the NC series motor rights. The NC is the first inline six series of engine Nissan put in a Patrol dating back to 1951. The P engine is an updated version of the NC series and the P40 is simply an updated version of the P engine. I even think the TB42 may be the updated version of the P40 but I am guessing on that. Graham also sold Nissan a bunch of body dies which they used to manufacture some of their smaller cars duing the 30's/40's. It was a really interesting write up done by the man from Equador and like I said he backed it up with links to facts plus history on the Graham Auto Company. I will have to see if we can get this info back online because it was really interesting and pretty cool Nissan history.

For those who don't know....the first series of Patrols were 4W60's. It was released in 1951 and the same year a handful were exported from Japan to Argentina. South America saw a good many of these very old school Patrols during the 1950's. In fact some are still in use down there, I saw one while in Colombia SA. Australia also got a few 4W60's in the late 50's, ie 58 or 59. I know this for a fact because I have literature on this from the 50's. I also was contacted once by a man in Australia who believed he had one of these 1950's Patrols. If you like auto history both Nissan and the Patrol have some interesting stuff to learn about.

[patrol ute]

I have seen a couple of MK and MQ's with the P40 motor in it and was wondering if anyone had seen them with th e5 speed in em? Or did they only come out with the 4 speed?

Cheers

Mk

yup got one in my drive way but its a ug 160 with a p40 5 speed 1987 ute can not find any info on this type of ute ug 160 but that is whats on the conpliance plate if any one has any info on it plz tell me square lights

[David_S]

yup got one in my drive way but its a ug 160 with a p40 5 speed 1987 ute can not find any info on this type of ute ug 160 but that is whats on the conpliance plate if any one has any info on it plz tell me square lights

160 is the Nissan Model or Series No for what is known in OZ as the MQ/MK. The Prefix "K" as in K160 denotes the hardtop, "UG" the pickup, "VMG" van, "J" hardtop high roof and a whole host of variants "URG", "UMG" etc.

This is followed by various suffixes relating I presume to engine type, transmission etc There is for example a Model UG160GFM but don't ask me what it all means other than it being a pickup:?

[RMP&O]

This is followed by various suffixes relating I presume to engine type, transmission etc There is for example a Model UG160GFM but don't ask me what it all means other than it being a pickup:?

The other letters could denote trim, rear diff, rated payload, factory bed or cab & chassis and on and on. If you happen to be able to find a parts book (I got 2 of them on ebay a 1980 & 1986) then you will find a lot of useful info in there besides just part numbers. All production numbers are shown so you can identify a Patrols year by its vin #, all models and variations shown, diffs in certain models, gearing in certain models, super rare items and on and on. Parts books are very useful because of this so if you come across one on ebay or trademe it is well worth the $50 or so to buy it. In fact I didn't even know the MQ/MK came with a H233 full floating rear diff option until I seen it in the parts book! Beware though there are RHD and LHD parts books which list a lot of different things because say in OZ they didn't have such and such model while in Saudi Arabia they did.

I personally really like the SWB high roofs! Pretty cool truck imo but also pretty rare anywhere. They are kind of ugly but hey that ugly look grew on me!

[David_S]

I agree, RMP&O, the Parts Books are a fascinating source of info. I have the Jan 1986 version - and my Saudi Arabian truck has the H233 diff and came with the 3.9 ratio unknown in OZ - at least to ARB who told me when I was fitting one of their lockers to the front that there was no such thing as a 3.9 diff ratio in the MQ.

David

PS Used to see a lot of the high roof SWB hardtops in the Middle East in the 80s.

[RMP&O]

I agree, RMP&O, the Parts Books are a fascinating source of info. I have the Jan 1986 version - and my Saudi Arabian truck has the H233 diff and came with the 3.9 ratio unknown in OZ - at least to ARB who told me when I was fitting one of their lockers to the front that there was no such thing as a 3.9 diff ratio in the MQ.

David

PS Used to see a lot of the high roof SWB hardtops in the Middle East in the 80s.

Interesting...I thought your truck was a NZ model but now I recall you saying you brought it back from Saudi. My parts book lists the 3.9 ratio, I think it mostly came in the autos? My parts book is a 1986 RHD version, I got it in Oz so I assume it is meant for the Aussie market.

Is your parts book LHD then? If so where did you get it? Is your Patrol also LHD?

I actually know the biggest importer in the USA of Landcruiser junk. He brings a lot in from Saudi Arabia and has shown me pictures of some very rare and interesting Patrols. Including a bunch of 1950s Patrols in a junkyard which have since been crushed. He himself imported a 1980 LG61 Patrol from Saudi and is putting an SD33 in it. The truck is amazing, perfect condition really and an exteremly rare model. I think it is even something like vin number 70! He also found a woman I know a late 70s Patrol Ute over there in excellent shape with factory bed. So the guy can produce some interesting stuff...I never even thought to ask him about high roof MQ/MKs. The only ones I have really ever seen are in NZ, one or two in Colombia and in a bunch of Patrol brochures I have.

[David_S]

RMP&O wrote:

Interesting...I thought your truck was a NZ model but now I recall you saying you brought it back from Saudi. My parts book lists the 3.9 ratio, I think it mostly came in the autos? My parts book is a 1986 RHD version, I got it in Oz so I assume it is meant for the Aussie market.

Yep my truck is LHD but my parts book is RHD as I got it as a cast-off from the Auckland Nissan dealer. There must be all sorts of "junk" scattered around Saudi as with the dry climate on the central plateau there is little rust. Most damage would be crash induced as the life expectancy of vehicles was not high when I was there. I saw some horrific accidents. Some doctors got into big trouble with a satirical recording they made - one of the lyrics of which was "I am going to crash my Toyota tonight!" .

My truck was my company car which I bought off the company at book value when I left which for a three-year old truck was ONE Riyal (about 50c). Parts so far have not been a problem as most RHD parts fit and any LHD parts I need such as steering parts or throttle cable Nissan get in for me within 10 days. The LHD throttle cable ex Japan was actually cheaper than the RHD one available ex stock even though the LHD was longer!!

I think the 3.9 diff was pretty common even with the 4 speed manual such as my original box. It was well suited to maintaining high cruising speeds on the new highways being built everywhere in the Middle East. I maxed out once at 160kph with a slight tail wind, but could cruise effortlessly all day at 140kph. Back home I have switched to the 5 speed box and 4.3 diffs which perform better off road in NZ conditions.

David