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Rogue
nissan gu patrol
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20,268 Posts
Discussion Starter · #1 · (Edited)
So you have a CRD, you're not sure if you should do some modification to the motor to make it better? Read below before posting a thread.

1) Install boost and EGT (exhaust gas temperature, AKA Pyro) gauges. This is to monitor the motor trends of your Patrol. It will not stop a mishap, but it will give you a better understanding of how your motor works and how your driving effects the motor. Keeping an eye on the EGT is more important than boost, as the ECU already monitors this and controls it better than the DIs. This is considered to be the must do thing.
It may cost between $100-$400 for quality gauges and mounting hardware

2) Install an exhaust system, something with a highflow catalytic converter and muffler and a diameter or 2.75" or 3". This will reduce the overall EGT and potenitally bring on boost better so it can give more power and reduce fuel usage.
Ranges from $500-$1200 or more depending on your wants, requirements or quality. Off the shelf systems are fine.

3) Chip/Power Module, only tunable ones from repudable brands with service and warranty should be used. Some plug and play ones that cannot be tuned may provide little benefit or hurt your engine.
If you can get the module tuned professionally, then do so. $800-$2000 depending on module abilities, service, warranty and brand

4) Block the EGR (exhaust gas recirculator), it is considered better to block the EGR, but this may be illegal to do, it may or may not void insurance depending on your insurance policy and if the claim is attributed with the blocking. This is supposed to keep your oil cleaner for longer as it will stop the exhaust's carbon and burnt minerals re-entring the engine and contaminating the oil, but its not really quantified and most likely you should still be servicing and inspecting your car every 10,000km so it may be irrelevant. The system is only fitted for emission reduction. Some users of the EGR block report having issues with fault codes and boost related problems.

As little as DIY for nothing, or somewhere around $100 including fitting.

5) Install a catch can, this will stop oily junk re-entering the intake, sticking into the intercooler thus creating airflow resistance through the intake.
Can be done for $40 or could be $200 if paying for fitting.

6) Keep an eye on the airfilter and fuel filter, drive it and enjoy it.
Cost of filter and fuel to drive it ;)
 

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nissan patrlo gq
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7 Posts
ERG blocking

Great information however I am a wee bit confused in relation to the blanking plate of 3.0l CRD. There are a number of references to a blanking plate with an 8 mil hole for CRD motors and other references which do not mention the hole in the blanking plate. I would appreciate any of the pros and cons of using a blanking plate with a hole vs one without hole.
 

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Rogue
nissan gu patrol
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20,268 Posts
Discussion Starter · #3 ·
I think the difference is with peoples exhaust sizes. From what I've been able to tell, those with a 3" exhaust seem to have some problems with the EGR block and those that don't have a 3" exhaust have no problems. Although I could be wrong as this is only from the info I've been able to observe on here. It might be worth you posting up a new thread asking the question specifically.
 

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nissan patrol
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I process of installing boost and egt gauges what is peoples thoughts on boost hook up, one of those quick fit adaptors under MAP sensor or drill a hole and weld bung into intercooler pipe? I have a secondhand 2.5"-3" Dump with highflow cat in it that I purchased and yet to install going to hook into my 2.5" mandrel bend straight through system that I already have but it is from the flex join out. Will I require a dawes or should I just observe the boost first and see how it goes.
 

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Rogue
nissan gu patrol
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Discussion Starter · #5 ·
Most weld a bung onto the intercooler pipe. I don't know what this 'quick fit adapter' is for the MAP, do you have a link or picture?

I would only fit a dawes and needle valve if you run into limp issues. Otherwise, because the ECU on the CRDs use the MAP better than the DI, there is no gain for the average vehicle that isn't running big chip tunes.
 

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nissan patrol
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It is from extreme limits offroad thanks The Big Rig for putting up the link cheers.
 
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nissan patrol 09
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If you put the 8 mm hole in the blank plate, it will stop the issue of throwing a CEL code. The down side is it still lets a minimum amount of exhaust gas through to the engine.

I put mine boost line at the piece of cast aluminium, between the intercooler and the intake manifold. There are two untapped cast holes in it to easily drill and tap.
 

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Rogue
nissan gu patrol
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Discussion Starter · #9 ·

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Patrol4Life how you got any pics of your install of the boost line hook up.
 

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nissan patrol
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I think the difference is with peoples exhaust sizes. From what I've been able to tell, those with a 3" exhaust seem to have some problems with the EGR block and those that don't have a 3" exhaust have no problems. Although I could be wrong as this is only from the info I've been able to observe on here. It might be worth you posting up a new thread asking the question specifically.
If you are blocking off the EGR valve and removing the pipe completely (only going off experience in doing this with my 3.0lt navara) you can tap a hole in the plate used to block off the inlet pipe end and screw a fitting in for the boost gauge.
I have no idea if the EGR valves are the same on the patrol CRD motor BUT im about to find out cause I just picked up my new car today. GO PATROL!!
 

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Rogue
nissan gu patrol
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Discussion Starter · #12 ·
Not sure it's that simple on a CRD Patrol.
1) There is an EGR cooler attached to the manifold
2) The CRD has problems with the EGR being fully blocked
3) IF you could mount the boost offtake from the manifold EGR port, I'd doubt it would be very accurate due to flow patterns into the manifold.

Seems like a lot of stuffing around for no gain.
 

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An option for boost is a Scan Gauge - plugs in & gives you the option of setting up an X-Gauge in the form of a digital boost readout, no need for welding in bungs etc as the data is provided by the ECU.
The Scan Gauge reads it as MAP as standard (Manifold Absolute Pressure), you then set up the X Gauge by "minusing" this reading when setting.
 

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Rogue
nissan gu patrol
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Discussion Starter · #14 ·
Same can be done with an Ultragauge. The Ultragauge is a lot cheaper than a scangauge.

If you get a chip with boost modification, then don't expect true boost readings though
 

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nissan
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I have fitted a pyrometer and catchcan to my 2012 Patrol recently, along with a Steinbauer chip and 2.75" exhaust just after I brought it. The one thing I will say is that when pushed going uphill, the exhaust temp quite quickly gets to the 600 degrees celcius set for the alarm on the gauge....is there something else I can do to maybe bring this temp down some, as the car doesn't seem to be struggling during the climb?? Maybe put on a larger intake for the intercooler, or even a larger intercooler, or would this not make much difference??
 

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Premium Member
Nissan GU1 4.2
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I have fitted a pyrometer and catchcan to my 2012 Patrol recently, along with a Steinbauer chip and 2.75" exhaust just after I brought it. The one thing I will say is that when pushed going uphill, the exhaust temp quite quickly gets to the 600 degrees celcius set for the alarm on the gauge....is there something else I can do to maybe bring this temp down some, as the car doesn't seem to be struggling during the climb?? Maybe put on a larger intake for the intercooler, or even a larger intercooler, or would this not make much difference??
Intercooler is your next option and in the meantime back off on the accelerator. Intercooler will keep temp down and help with performance.
 

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nissan
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5) Install a catch can, this will stop oily junk re-entering the intake, sticking into the intercooler thus creating airflow resistance through the intake.
Can be done for $40 or could be $200 if paying for fitting.
Where can the catch can be purchased for $40? I cant seem to find any that cheap. Do u have a link?
 

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nissan patrol 3.0CRD 2012
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ZD30 CRD ("anti grenade") Mods

Hi guy have a 2012 CRD and am looking at doing some (anti grenade) engine modifications. I already have a Unichip and 2.5 inch exhust system. Some of the modifications I am looking at doing are, Daws And needle valves, catch can and EGR blocking plate. I'm located in Melbournes south eastern suburbs and am wondering if there is any good 4wd mechanics that would be able to do it all at once, and also how much it will cost all up. Any help and information will be much appreciated
Thanks 👍
 

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LED ZEPPELIN
1995 GQ TD42 NA
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12,022 Posts
Hi mate

You probably don't need to do any of that with your GU... the EGR block maybe. Are you handy with tools? It's not hard to do yourself...
 

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nissan patrol 3.0CRD 2012
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Thx mate not too bad with the tools, but don't have a great deal of tools. Does it involve much and what tools does it require. And I also herd that it can set of a warning light unless u drill a small hole which makes it less affective
 
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