ZD30 Di replace with new or reconditioned?

[mudnut]

As a matter of interest,
does anyone know if
it is possible to source
the newer CRD block
and fit the DI head and
other components?

[Hodge]

I don't see why not mudnut. As it is a newer engine meeting new emission rules. You'd have to bring over a few things from the CRD donor. Like ECU,intercooler... I'm sure theres a few more things.

[mudnut]

Sorry for the hijack.
Pardon my ignorance,
but why, would you need
the ECU if you used the
DI engine control?

[Hodge]

Sorry for the hijack.
Pardon my ignorance,
but why, would you need
the ECU if you used the
DI engine control?

Well the ECU controls other functions. For example the boost through the vaccum solenoid. It also controls the aircon clutch, disengages it when engine is over certain temperature or under certain load.
On a CRD it controls much more. Controls the injection pump, EGR valve, etc...
Someone correct me if I'm wrong here, but without ECU these grenades cannot function.

[Rock Trol]

If only using the crd block but the Di head then old ecu is needed. If planning to run as crd then new ecu is needed. But I an not entirely sure if both blocks are 100% compatible.

[mudnut]

So if Mr Nissan is still
making the CRD block,
then it would probably
be the best way to go
if you aren't keen on
acquiring a reco DI
wouldn't it? Has it
been done before?

[Hodge]

I reckon it would cost an astronomical fortune to buy a new block / engine from Nissan. I haven't priced one up or heard about ones pricing but, if general pricing from nissan parts is anything to go by, well I'd love to see this figure.

[Hodge]

If only using the crd block but the Di head then old ecu is needed. If planning to run as crd then new ecu is needed. But I an not entirely sure if both blocks are 100% compatible.

The CRD block has a completely different IP bracket / assembly. The VP44 would not fit on a CRD block, by looking and comparing them in the manual. Vp44 is much more complex.

[Rock Trol]

The CRD block has a completely different IP bracket / assembly. The VP44 would not fit on a CRD block, by looking and comparing them in the manual. Vp44 is much more complex.

Good pick up Hodge. Looks like rebuilding the old block I the only way to go. If its a really old engine then maybe getting a late model Di block from the wreckers is the go. It would have updated internals such as oil system.

[scotty83]

Jono6974. I will probably regret typing this as I am about to do a Simpson desert crossing but mine has just clicked over 200k and still going strong. I fitted the catch can, boost limiter (dawes value) and boost gauge at 140k or so, and have recently 198k fitted a secondary fuel filter and lift pump.

One word of advice get your intercooler off and clean it out if you haven't (decreased or unleaded petrol, making sure to rinse and dry thoroughly before refitting). Also check/clean the intake (butterfly) vent just after it. You will be surprised how dirty it is from the egr.