RD28 INFO AND BILLET TURBO
The Nissan Patrol GU Turbocharged RD28 2.8L has copped a lot of criticism as being a slug,
Down low it’s engine is low on torque and does suffer turbo lag due to the small size of the motor compared to the body.
Like the ZD30 GU Patrol, it also doesn’t like high boost (but doesn’t suffer the same over boosting issues as the ZD30).
It also doesn’t like running hot.
On the positive side, the RD28 it does rev high, so is best driven in a higher rev range, as long as you don’t thrash it.
The other thing to consider when purchasing an RD28 GU Patrol (or if currently owned), is the aluminium head.
Corrosion of the alloy head can be a problem if the cooling system has not been well maintained.If you are going to do a lot of towing or more serious off-road driving, you might consider the TD42 or perhaps tweak the RD28 for a bit more power.
The 200kg or so weight advantage that the GU 2.8 has over the TD42 will then come into play when you do a few tweaks.For extra power, consider a power chip and a 3-inch exhaust.
Additionally, by blocking off the EGR Valve you should see a bit more power coming on at lower revs.
No EGR also means less soot clogging the inlet manifold.Finally, you might consider adding a bit more power with a mild turbocharger upgrade.
Do you currently have a GU RD28 that requires and new turbo or do you want to do a turbocharger upgrade for extra power?
We supply a very cost-effective aftermarket replacement upgrade
The upgraded technology uses a computer designed, CNC-machined (from a solid billet) aluminium compressor wheel.
This compressor forces higher airflow through the turbo, a faster, smoother spool up and less vibration at higher RPM.
It is designed to be a bolt on replacement for the original Garrett GT1752s OEM turbo.
So no further modifications are required for install!.
ZD30 TURBO AND INFO
The Nissan Patrol ZD30 turbocharged 3.0L vehicle has had a few incarnations since introduction around the late 1990’s.
Various forums are dedicated to Nissan Patrol owners and have a lot of good information, so below are just a few points we have picked up on from experience of Nissan Patrol ZD30 GU Garrett turbocharger problems and solutions.
A common complaint and a reason why the original Garrett turbocharger requires replacement is overboosting.
The turbo tends to over boost and at times have an erratic boost curve as it spools up.
It is not uncommon to see the GT2052v Garrett turbo on the ZD30 Patrol spike in boost pressure to well over 20psi.
The practice of installing a larger / higher flow exhaust on a Nissan Patrol as many owners do can sometimes be a factor in reducing the problem.
It is best practice with the Nissan Patrol ZD30 GU regardless of set up, to install a Dawes and needle valve to help prevent the problems of boost spiking.
It will also allow for better control over maximum sustained pressure (say around 15psi if you want more power and less fuel economy) or (say around 10psi for fuel economy).
They also work through spool up, providing a smoother boost curve and a more responsive vehicle in most cases.
Additionally, a boost gauge and an EGT (exhaust gas temperature) gauge is highly recommended.
The EGT gauge can alert you to excessively high temperatures that can damage the engine.
You might also consider an oil catch can to stop oil mist ingress from the crankcase.
Here are some links to the following Turbochargers to suit Nissan Patrols-