GU Patrol engine swap

Submitted: Sunday, Dec 21, 2014 at 21:59
ThreadID: 110493 Views:2837 Replies:7 FollowUps:3
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Hi guys & girls, I'm keen on getting a 2.8td GU but I want to put the TD42 engine out of my GQ in it... How hard is it to do? Will the 4.2 bolt straight up, or do I have to modify the engine mounts? I know I'll probably have to modify the exhaust & change gearbox, radiator, etc, but I just want to know if that's all I'll have to do...

Cheers & Merry Christmas... Brad
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Reply By: Member - Nutta - Sunday, Dec 21, 2014 at 22:26

Sunday, Dec 21, 2014 at 22:26
I would post this up in the forum, they'll give you all the ins and outs and headaches. Cheers
AnswerID: 543240

Reply By: pop2jocem - Sunday, Dec 21, 2014 at 22:33

Sunday, Dec 21, 2014 at 22:33
Not sure exactly what else is involved but I would guess substituting a 6 cylinder for a four cylinder is going to require some relocating of engine mounts and probably a gearbox upgrade at very least. How the engine mounts are going to go being fitted in a chassis location other than where they were intended to go????
Having said all that, anything is possible if your bank balance can handle it and you consider the cash outlay worthwhile.
A lot of these types of mods are financially viable if you can do the bulk of the work yourself. Can get a bit out of hand if you just dump it on someone elses workshop floor.

AnswerID: 543241

Follow Up By: Member - John - Monday, Dec 22, 2014 at 02:16

Monday, Dec 22, 2014 at 02:16
Pop, they are both 6 cylinder engines. From memory the engine mounts are in the same place and yes the 4.2 gear box is required.
John and Jan

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FollowupID: 830187

Follow Up By: Ozhumvee - Monday, Dec 22, 2014 at 07:46

Monday, Dec 22, 2014 at 07:46
We had a burnt 2.8 years ago bought for the mechanicals to put in a diesel 6 cylinder. As has been said the diesel box is different and also the diff ratios. Drivetrain in the 2.8 is closer to the 3 litre 6 cylinder petrol than the 4.2 either petrol or diesel.
FollowupID: 830190

Follow Up By: pop2jocem - Monday, Dec 22, 2014 at 12:50

Monday, Dec 22, 2014 at 12:50
OOPS, SORRY, seniors moment. (:-((

It's a Nissan, it's a Nissan, it's a Nissan

The 3 lt 4 was a Toyota.

Note to self, read post more better next time.

FollowupID: 830200

Reply By: Member - Peter G20 - Monday, Dec 22, 2014 at 10:20

Monday, Dec 22, 2014 at 10:20
Why do you you want to swap a great engine? It's more economical than the 4.2 to run and is a lot quieter!
Mine is 16 years old and done over 360,000 k's without any trouble!
I have used it to tow 2 different camper trailers over rough terrain and covered long distances in all sorts of trying conditions!
AnswerID: 543251

Reply By: patsproule - Monday, Dec 22, 2014 at 19:33

Monday, Dec 22, 2014 at 19:33
The 2.8 litre RD28T is bolted to a different gearbox and has different diff ratios to the 4.2TD. It's far from a bolt-up swap. You would need the entire drivetrain from a 4.2. The other issue with the GQ motor would be emissions compliance. While the GU4.2 had bugger all in the way of emissions controls, bolting up an older 4.2 would likely see you run foul of the law. Basic rule of engine swaps is to replace with a motor of the same year or later, and running all emissions systems from the year of the motor manufacture.

AnswerID: 543264

Reply By: Angryz - Tuesday, Dec 23, 2014 at 09:27

Tuesday, Dec 23, 2014 at 09:27
Contact Readies 4x4.They do these swaps almost every day of the week.
AnswerID: 543289

Reply By: Mudguard - Tuesday, Dec 23, 2014 at 20:10

Tuesday, Dec 23, 2014 at 20:10
HI, Ito have had the '98 2.8lt GU since new, been every where in it no real faults, and also went down the same path, ITS a very intensive swop, yes it can be done, but ADR rules that you can't put old technology into a newer vehicle, as was said in a previous reply log onto they cover this subject well, ie: ECU, 2.8's are full electronic=changeout wiring looms,speedo, gearbox/drive gear or ratios, install throttle cable, subtle body mount changes between GQ/GU, etc,etc cheers
AnswerID: 543302

Reply By: Green Rv - Wednesday, Dec 24, 2014 at 10:16

Wednesday, Dec 24, 2014 at 10:16
Hi Brad
i worked at a diesel workshop for a few years and did see 2 or 3 done
getting the job done by a good mechanic will set you back quite a few bucks. now i'm trying to remember what the end up figure was and am thinking around the $17000.00 area, don't mean to scare you and i could be way off the $$ mark
for this kind of money plus a few more have a look at a chevy diesel

this is just one of the many guys out their

on the side note: if your going to get a mechanic to do the job use one that specialises in that type of work as they will often do the job quicker and cheaper as they have the right tools and equipment

AnswerID: 543325

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