Vehicle & Technical > Discovery

Fuel pump optimisation by Van Aaken

<< < (2/2)

Moose:
Darren, was it you I gave the VA guys, name to about a discount ??? it may not of being.

If not, I cannot remember who, but one DOC member was going to ring.

Darren:
Madtam,

As I understand it, the optimisation isn't just an increase in fueling. It's the mechanical equivalent of re-mapping the fueling over the rev range to get maximum efficiency. I don't profess to understand exactly how it's done but I can tell you that it doesn't increase the engine temperature.

In June I went on holiday to Norway towing our 1 tonne expedition trailer, which included frequent long (i.e. continuous for up to an hour) climbs up improbably steep mountian roads. The only time the engine temperature varied from normal was on the long descents when the temp. went down!

Darren:
Chris, I'm ashamed to admit it was me you gave the contact details to and I never got round to doing anything about it.  :oops:

I'll add it to my 'things to do' list and drop in next time I drive past.

muddyweb:

--- Quote from: "Darren" ---Madtam, I don't profess to understand exactly how it's done but I can tell you that it doesn't increase the engine temperature.
--- End quote ---


Most Land Rover engines are over-cooled in standard trim, so I'd be surprised if you saw an increase in overall temperature.

The key issue is the heat distribution in the engine.  If (for example) the changes in mapping and fuelling cause an increase in the localised temperature of the head, then there may be long term detriment.  This is of course all a bit theoretical, since I don't have any specific evidence for this particular modification.

The uprated intercooler has the benefit of reducing the induction air temperature, so increased boost can be achieved.  The open-core of an uprated intercooler shouldn't interfere with engine cooling.

But... IMHO, adding a larger intercooler alone will not provide you with great increases in power or torque.  You would also need to change the fuelling and boost set up to see any real benefit.

Just a few random thoughts :-)

Darren:
Dunno Tim. All I can say is that I've done more than 20 000 miles since the optimisation was carried out, including a 3000 mile trip to the Sahara and a 2000 mile trip across Norway, and there have been no problems so far. The engine (and the rest of the vehicle) has now done about 132k.

Navigation

[0] Message Index

[*] Previous page