Tuneing up my defender 90 200tdi

Hi there I have a defender 90 with a discovery 200tdi engine I'm wanting to gain more speed and poke out of it I've already got a straight through exhaust and had the turbo turned up I havnt had the pump turned up as the guy I had the engine off says ( you dunt wanna do that ) I dunt know why and didn't explain so why would that be? And wot other mods can I do thanx

Sell it and buy a motorbike or bigger turbo and intercooler

I'd love a motorbike but are lass says no ha...is it possible to turn the pump up or will it kill the engine

Turn it up a quarter of a turn and see, quarter at a timetill its how you want it.
Wont do it any harm, it'll just smoke when you boot it if you give it too much
Go for it

It's possible, but will wreck your engine as a result. Not worth the reduction in engine life for a few bhp

There is no need to open 2 threads to ask one question

I'm newto this forum and I didn't realise it went on so I posted it again sorry bout this

blue beasty said:

There is no need to open 2 threads to ask one question

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who wee weed in your cornflakes today then?

Lyndon said:

It's possible, but will wreck your engine as a result. Not worth the reduction in engine life for a few bhp

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Its only burning more fuel, longer engine life because
......... takes less time to reach cruising speed therefore less engine revolutions per mile equals less engine wear

Lyndon said:

It's possible, but will wreck your engine as a result. Not worth the reduction in engine life for a few bhp

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rubbish..my 200 disco has had the pump tweaked without it it wouldn't move the 37" tyres very well..

been like it for 2 years smokes when ya boot it that's about it

wiltshire landyman said:

rubbish..my 200 disco has had the pump tweaked without it it wouldn't move the 37" tyres very well..

been like it for 2 years smokes when ya boot it that's about it

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i agree mine has been tweaked for about 8 or 9 years now and the only problems i've had is a rocker shaft snap on me about 5 years back and a HGF just before crimbo. ask anyone that knows me and my driving style will tell you i dont drive a coffin dodger .

fiddling with the boost is more risky imo.
most of the settings result in smoke, nothing more, theres only the starwheel (IIRC) that has the slightest possibility of causeing problems, and even then its only if you run it wide open for long periods of time.

Look in the engines section, think its in the 300tdi bit for some indepth instructions and explanation of how and what all the adjustments do, IFIAK its the same pump.

So why would the guy who I bought the engine off tell me not to turn it up? Do u think he's hiding summet with the engine or summers not right

Drewbay said:

So why would the guy who I bought the engine off tell me not to turn it up? Do u think he's hiding summet with the engine or summers not right

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i'd say its cuz he is not confident of the condition of the motor

Drewbay said:

I'm newto this forum and I didn't realise it went on so I posted it again sorry bout this

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I put a link on yer other thread.....tis worth reading

I tweaked my pump and fitted an Allard full size intercooler a couple of years ago. Improved the general performance nicely and runs sweet as a nut.

However, there is no such thing as a 'fast' landrover. It's a tractor. A granny with a shopping trolly is faster.... If you want speed buy a sports car.....

Drewbay said:

Hi there I have a defender 90 with a discovery 200tdi engine I'm wanting to gain more speed and poke out of it I've already got a straight through exhaust and had the turbo turned up I havnt had the pump turned up as the guy I had the engine off says ( you dunt wanna do that ) I dunt know why and didn't explain so why would that be? And wot other mods can I do thanx

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Your in the wrong vehicle.

I would suggest you don't want to turn it up much because it will end in tears. How much have you turned the turbo up by? There are upper limits, you will have fitted a boost gauge, so what is your manifold pressure at max boost?

200tdi is a strong engine, but start tinkering with it and you reduce reliability and increase the chances of HGF, overheating etc...

There are 3 academic adjustments on the injection pump (I have explained in great detail on here somewhere so it's on the forum somewhere) basically getting it right is a combination of all three settings, you can't just turn up one and that will be it because it doesn't work like that, there is the low manifold pressure fuelling, part boost fuelling and max boost fuelling. There is also the max fuel but this isn't as good as it sounds, turning this up will increase revs, heat and smoke. The engine shouldn't be tweaked to give higher max revs because the engine can't cope with much more.

If you turn up the low fuelling you get a bit more on acceleration from 1st gear before turbo kicks in, but this will cause smoke issues so you need to then adjust the rest of the pump to suit - part boost gives better pull in the mid range and max boost will allow max fuel sooner. But if you don't have a machine to calibrate it on then you are going to be doing it by smoke levels and how it drives, each time putting it back together and trying it again. Problem with this method is if you don't have extra gauges like exhaust gas temp or boost pressure etc, you don't actually know if these tweaks have had adverse effects on the engine.

If at any point there is black smoke, the "tuning" has not been effective and it's just getting too much fuel for the air at any given time, increasing boost even more will decrease engine life...