Thread: How fast should a Defender go?

There's definitely something not quite right if you can only manage 115km/h downhill in fifth. Mine will creep up to that speed on the flat while I'm not looking. I've had three 300 Tdi Defenders. All could manage 130km/h on the flat. I wound one of them out once on the Stuart Highway out of curiosity and it topped out at 150km/h (at least that's what the speedo indicated). Not that it really matters. I'm never in that much of a hurry anyway.

Originally Posted by RonMcGr

Well, I don't know about the TD5, but I do know, an Army 110 will do 140kph with heavily laden trailer, but don't quote me on that

I think the Army 110's had a different motor, the Izuzu 3.9 rather than the Rover 2.5Tdi.

Its a shame the Tdi cant keep the speed limit and by the sounds of it really needs a good horsepower injection. I think it's bad practice to only have enough power to just reach the speed limit and nothing more. Perhaps its clogged up.

Maybe that's all they (the TDi Defenders) can do....

The US Mil spec Hummer (H1) can only top 100 km/hr at full song with their 6.5 litre V8 and 3 speed autos.

My tyres limit me to 140kph

What's the rush

We are usually on holidays when driving outside metro areas, so are never in a hurry. Usually happy to sit between 80 and 90, after all, the faster you go the faster your fuel dissappears. And everyone seems to be complaining of fuel prices these days.

Originally Posted by duncanw

My tyres limit me to 140kph

Wanting to keep my license limits me to much less than that.

My 300TDi 110 will happily do 100 all day. Only a few big hills knock it around. It will creep up to 110-115 if I'm not careful. At 120 it lets me know it isn't happy!
One thing I have learned though is, don't floor it up hills. Give it a little more just before the hill, like you want to gain 10k's, this seems to get the turbo going a bit better, then just hold that and let the engine management look after it. What engine management you say. There isn't much but there is a vacuum advance on the fuel pump and it works!

There are also some threads in hear about Gas Fumigation in deisels.
Definately worth looking into.
JD is looking at it now.