ZD30 Engine Failure Protection

ZD30 Engine Failure Protection also known as nads, grenade fix.

You’ll be reading this post because you own a zd30 Nissan patrol GU Y61 or maybe even a Nissan Navara D22 ZD30.

This article covers all Zd30 engine, ZD30DI and ZD30CRD

We explain to you how to keep your zd30 alive.

The Zd30 engine would have to have the worst reputation out of all of the Patrol engines.

They have a vvt set up meaning the boost is controlled by a computer.

Like most newer diesels they have a egr –exhaust gas recirculation to meet emissions standards.

Being a bigger car with a smaller engine the zd30 engines run high boost straight from the showroom floor, this means it will breathe heavier / have more blow-by than usual. This is not a good thing on any car that has a EGR system, from the engine breathing heavier it will make a mist oil vapor in the inlet manifold, coming from the intake tube and along the way will contaminate the MAF/ mass air flow meter and because of the EGR this can gum up and block some of the intake giving you not so good results.

CHECK BELOW FOR WHAT WE DO TO STOP THIS.

ZD30 ENGINE PROTECTION PACKAGE

This is a list of what we do not a order in what we do first. we recommend doing all of these at once to protect your zd30 engine.

Install an oil catch, can also be known as an oil/air separator. Doing so will minimize the amount of oil mist from blow-by getting into your air intake system. We stock provent catch cans in our online store.
Egt Gauge fitting one of these will allow you to keep an eye on your exhaust temperatures. It is just as important as your water temperature gauge and a must if you own a zd30.
Boost Guage I know all these gauges right! We are not trying to be cool, fitting a boost gauge will help save your turbo, zd30 engines are notorious for having boost spike issues, adding a boost gauge allows you to keep an eye on things. A great gauge to use is a 3in1 boost, egt and temp gauge, g52bet.
MAF mass airflow sensor cleaning every service! Having a dirty MAF will give wrong signals to the ECU causing to much or not enough fuel and also over boosting.
3-inch exhaust system having a better flowing exhaust system allows the engine to breathe better, allowing the egts to drop massively
Boost controller for the turbo actuator, zd30s are very common for over boosting this destroys turbos. from the factory, zd30s are boosted controlled by the ECU / computer. We install a mechanical type vacuum and boost operated controller, meaning you won’t have to rely on the dodgy zd30 ECU to control boost minimizing your boost spike risk by 95% we use a Tillix controller.
Oil changes every 5000-7500kms is highly recommended.
Intake manifold carbon clean, at times we have seen zd30 intake manifolds up to 50% blocked from carbon build-up due to a heavy breathing engine and having the EGR not blocked. NOTE if your car has not had the supporting mods and has done over 50000kms, you will need to remove the intake manifold and physically clean it. Doing so will reduce egts, improve economy, and lowers the risk dramatically of engine failure.
Regular fuel filter replacments and fuel system cleans.
Fuel Injector replace every 75000-100000kms.
Fuel system lift Pump, the vp44 Zd30 injector pump is very common for failure. Installing a lift pump reduces the heat of the injector pump reducing wear on the pump. ( please note when doing this mod you will also need to do a spill valve mod)
Upgrade your intercooler to a welded unit instead of the factory crimped/clamped unit. If your intercooler looks like it has oil leaking from it you need to replace it asap. Or engine a front mount intercooler kit, front mount intercooler kits are the ultimate to keep the engine cooler.
Snorkle and Airbox upgrades increase the airflow that then Lowers exhaust temperatures.
Ecu Remaping for both zd30 Di and Crd. The reason behind this for the di is that your limited to how much boost you can run, and how quickly the turbo can spool. The ecu has a boost cut and a spool cut, remapping the zd30 ecu removes this cut and allows you to run more boost meaning you will have lower egts.
Install an aftermarket glow plug control module, or a glow button. Reason for this modification is that the original unit glows the system for to long eventually causing the glow plug tips to fall into the cylinder and damaged the piston.
Glow plugs replacement as 15 glow plugs glow to long and tips fall into the engine one you have installed an aftermarket glow option replace the glow plugs if you want to protect your zd30 engine.

These are the key things to protect your zd30 engine.

Something to also note, blocking the Egr is not as good as everyone thinks, it will reduce the carbon build up but the egr system also lowers egts when working correctly, so blocking this off means egts are increase all the time. This is not something you want. Doing the supporting mods above, whilst also leaving the egr system as factory will have the best results.

The way around not blocking the egr is doing regular intake carbon cleans every 20000kms, saving you pulling off the manifold the manually clean it. Most diesel workshop now days have these machines available.

Remember if you have never had a intake clean done or a carbon clean done since new, the only correct way to remove all carbon is to remove the manifold and clean it manually, once you have done that, every 20000kms it is recommended to clean it on the machine to keep it from clogging up.

Here a link to our contact page if you want us to install everything we spoke about above to protect your zd30 engine.

We have all parts in stock, so if you want to install your self please call us to arrange.

(NADS) Nissan anti detonation system

Zd30 engine

Zd30 engine protection