3.0 patrol power up

Submitted: Sunday, May 10, 2009 at 19:09
ThreadID: 68704 Views:2495 Replies:5 FollowUps:4
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Can anyone please tell me the difference in low down power they've manage to get out of 3.0 litre common rail patrol with exhaust and D.P chip. Getting really tired of the lack of low down torque. Thinking of going down this track.
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Reply By: Member - paul M (SA) - Sunday, May 10, 2009 at 19:38

Sunday, May 10, 2009 at 19:38
love my patrols but that is the reason i brought my 76 series v8 cruiser.
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Reply By: Ozboc - Sunday, May 10, 2009 at 20:08

Sunday, May 10, 2009 at 20:08
I Must admit - thats the one thing i dis like about my Patrol ( 4.2TDI) especially when fully loaded with fuel and caravan ( about 4 t in total)

until the turbo kicks in its a real bugger to get off the mark - especially on the Big hill starts

Boc
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Follow Up By: Member - John - Monday, May 11, 2009 at 07:31

Monday, May 11, 2009 at 07:31
Boc, have you done any mods to your 4.2TD? If not, you will be amazed at the difference across the board if you do some fairly simple mods. 3" exhaust, bigger wheels both ends of your turbo, (I prefer MTQ Toowoomba), larger intercooler. If you really want too, LPG injection gives a real boost. John
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Follow Up By: Ozboc - Monday, May 11, 2009 at 07:41

Monday, May 11, 2009 at 07:41
Greetings John , No mods as yet - well apart from lift kit and such , but nothing done to motor

Have contemplated it - just never got around to following it up !

and My nissan is the one without the Intercooler ( 2000 model 4.2tdi)

any idea on a ball park $$ figure for the exhaust ?

Boc
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Follow Up By: Member - John - Monday, May 11, 2009 at 14:49

Monday, May 11, 2009 at 14:49
Boc, depends on where you are. I had mine done locally, in Morwell Vic, by the local exhaust place, all up $275.00. I already had the 3" dump pipe, which is a must. Think the dump pipe costs about $190-200. Not sure about the cost of the pre made systems. The exhaust certainly makes a differnece, but the other mods are certainly more noticable under the right foot. You can find the intercoolers online on ebay at times, and the bonnet scoops also. Have fun. John
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Follow Up By: Member - John - Monday, May 11, 2009 at 14:49

Monday, May 11, 2009 at 14:49
Hate it when I hit submit instead of spell check, lol
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Reply By: Member Carree (WA) - Monday, May 11, 2009 at 01:09

Monday, May 11, 2009 at 01:09
Hi Shane
I have a 3lt common rail Patrol and have fitted a Tunit chip and also done exhaust, but still kick myself pretty hard for getting rid of the 4.2 tdi. With a few revs up its pretty hard to stop the 3lt, in fact it does just want to keep going, but for real low down work it struggles. It is certainly better with the chip and exhaust and it does improve down low to what it was as standard. I dont have any figures as haven't had on dyno but it has helped a fair bit.
Regards Brian
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Reply By: Robin Miller - Monday, May 11, 2009 at 08:03

Monday, May 11, 2009 at 08:03
Hi Shane

Its done a little bit for my mates with similar engine in Navara's but its really not enough.

Saturday we we matching cars lugging up a 1000ft rise with tight bits.

The main next car was a turbo 80 series 4.2 with exhaust as well didn't go bad but as soon as even it went off turbo below 1500 rpm it just couldn't do the job.

The low down torque of my petrol patrol was clearly better, more even and could pick up even after dips below 800 rpm.

So while you can do a bit better , I wouldn't invest a lot , better to save it for something that is fundamentaly better.










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Reply By: Nic I - Monday, May 11, 2009 at 12:58

Monday, May 11, 2009 at 12:58
Hi Shane,

Same here, although I've only added a (DP) chip, no exhaust modifications yet. The chip adds some additional grunt, but only above about 1,900 rpm, certainly not where I wanted or needed it. There's still very poor power/torque below these revs.

I think a freer flowing dump pipe and exhaust may help, but I suspect the improvement will be minor and too little. And by the way, the engine braking is also less than I expected. I'm not sure what the remedy is, but mine may well be one of these:

- replacement engine, either DMax 4.5L V8 TD or rumoured Nissan 3-3.5L V6 TD, or

- replacement vehicle, I have a ute, so not much choice here: 70-series with the V8.
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