GQ/GU- Y60-Y61 - TD42/T/i Pumps 10/11..12mm?

[MB]

G’day NP.com.au good folks!
Honest nuffy question, how does one tell/identify their diesel injector pump stock sizes?


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[Reddave]

Part number might help determine which is which

The Ti pump has an electrical plug at the bottom of the pump, the bracket to hold the back of the pump is also different, it has a relief cast into it to suit the plug

[MB]

Cheers Dave Mate!
Personally/thankfully never needed to ring them (Nissan) to date, is there a number somewhere on their stock castings maybe?


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[PeeBee]

Assuming the vehicle is unmodified in that department from new, would the VIN be sufficient to enquire with Nissan?

[Reddave]

Cheers Dave Mate!
Personally/thankfully never needed to ring them (Nissan) to date, is there a number somewhere on their stock castings maybe?


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When I pulled my pump off there was a sticker on it with the part number on the body of the injector pump

[mudski]

As far as I know, all GQ use 10mm, GU N/A and factory turbo use 10mm and only the factory Turbo intercooled models use 11mm. 12mm is an aftermarket option.

[MB]

Thanks Gents, appreciated!
Rang Nissan with the VIN and only got a part number: 16700VB920
Being a stock rocket TD42T it must only be a 10mm then thanks mudski mate!


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[0-TJ-0]

Thanks Gents, appreciated!
Rang Nissan with the VIN and only got a part number: 16700VB920
Being a stock rocket TD42T it must only be a 10mm then thanks mudski mate!


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Not sure why you were asking but for your info mate, when i spoke too ufi about getting a pump built they said there's no difference in performance compared to plunger size. As in, a pump setup for 200hp in 11mm won't show any difference to a 12mm setup the same on a dyno. 12mm is only needed when shooting higher than the 11mm will allow.

[Winnie]

As far as I know, all GQ use 10mm, GU N/A and factory turbo use 10mm and only the factory Turbo intercooled models use 11mm. 12mm is an aftermarket option.From what I know all factory turbo motors have the 11mm pump.

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[MB]

Thanks again Gents,
Main reason for query is that Mrs MB is saving like crazy for a new much bigger horse float. Loaded up with nags in the back and front kitchenette/sleeper will see it nudging the poor old family GU wagon TD42T 3,500kg towing capacity. She would love a Y62 which would sh#t it in no doubt but we really cannot borrow/afford one for a good while.
Was hoping for now to squeeze on the cheap an extra say 20% more go out of the old TD42T by converting it to a TD42Ti.
EGT’s on the intercoolerless TD42T will known skyrocket trying to haul 3.5T through our mountainous home region.
Cheers!


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[PeeBee]

Whats the difference between the T and Ti Mark?

[MB]

The ‘i’ is intercooler I believe mate and also their pumps have more elecy bits to puters I think. We definitely do need an intercooler on the old bus but thought if it was a 10mm pump currently then maybe also needed to go 11mm without the extra elecy bits?


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[Winnie]

The ‘i’ is intercooler I believe mate and also their pumps have more elecy bits to puters I think. We definitely do need an intercooler on the old bus but thought if it was a 10mm pump currently then maybe also needed to go 11mm without the extra elecy bits?


Sent from my iPhone using TapatalkI reckon yours will be an 11mm mate so if you get an intercooler and a good tune you should have awesome results.

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[mudski]

From what I know all factory turbo motors have the 11mm pump.

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You could be right mate. I'm sure I was told otherwise though, but it was a few years back when I was first doing the conversion.

[MB]

Half an hour found McGoogling the Nissan pump number they VIN gave me above and my head is starting to hurt :-) ! Only so far finding Bosch & Zexel part numbers for “plunger” sizes after O-TJ-O ‘s kind lead. The Zexel plunger number did appear to start with 11F but I’m only guessing there?


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[0-TJ-0]

If you're after the pump upgrade mate you want to talk to someone like UFI in WA or some other reputable pump builder which there's a few around now i think. They do more than just put a bigger plunger in apparently. They set it up so the fuel comes on in a nice curve. I told them what patrol I had and they told me what I needed and had it out to me in a week.

What they did tell me is that they could build a good 200hp pump in 11mm a bit cheaper than a 12mm.

[MB]

Cheers heaps Mate!
Only for now trying to cheaply squeeze a whisker more out of it and most importantly lower the EGT’s for longevity whilst heavier hauling forthcoming. We currently just run a Redarc gauge/alarm and drop a cog or two when towing 2.5Tish up decent highway hills, becoming annoying though as more power is there waiting!
More McGoogling just now just found a possible telltale that 11mm is stock for all GU’s they’ve apparently worded for GQTD42 older goldies upgrades?
http://www.nissanpatrol.com.au/forums/images/imported/2019/07/61.jpg
Probably best just to get my arse into gear and intercooler the old bus ASAP :-)


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[mudski]

Ring Steve at BSP Diesel in Campbellfield MB. He'll tell you.