things to upgrade for high performance

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Originally Posted by Dougal

Yeah I'm battling with that one too. Suspension, brakes and driver upgrades aren't going to get me up hills quicker.

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Or help me keep up with the Nissan Z that was in front of me this morning :twisted:

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Originally Posted by isuzurover

Or help me keep up with the Nissan Z that was in front of me this morning :twisted:

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doint you meen drive over the z

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Originally Posted by c.h.i.e.f

110lb springs should be easy to obtain as they are light for a petrol from what i hear.
Oh thats the other thing that i done was icrease the injector pop pressure (cannot remember figures now)
Nero i see your point but when im sitting in my landrover that revs to half that of a petrol and weighs 1t more than a commodore and im overtaking it because it has sensed a slight incline it makes me feel happy but just imagine if i could get mine to go even better ! I figured this via my formula power+diesel=:D
How many cc's/1000 at 2500rpm are you at john ? out of interest...

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cc's/1000 strokes is indepent of engine rpm. 1000 strokes is used to improve the measurement accuracy.

My pump delivers just under 180 cc/1000 st. Remember for 90kw at 3000 rpm the 4BD1T requires 70 cc/1000 st

sorry john my bad
where did you get your pump work done at? without sounding rude :angel:

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Originally Posted by c.h.i.e.f

sorry john my bad
where did you get your pump work done at? without sounding rude :angel:

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I was very pushed for time when I posted my previous reply and didn't concider the question properly and assumed something that may not have been meant.

In one sense my reply was correct. That is considering the pump delivery.

But the governor type used with our pumps controls the pump delivery over the rpm range for varying loads.

I have previously posted the full load calibration diagram from the manual for 1985 - 1988 4BD1T pump with boost compensator. This diagram and the associated table give delivery at different rpm. Without going back and checking, the set point 'A' is the calibration for max torque and is somewhere around 2500 engine rpm. After this calibration the link that turns the torque cam as rpm changes is adjusted to achieve the calibrated flow on either side of point 'A'.

During calibration on the test bench the pump speed is set accordingly and the delivery from each pump element is measured over 1000 strokes.

I sent my pump down to DieselTech in Vic.

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Originally Posted by Nero

No one has suggested the obvious fit the number plates to something else, 6cylinder dunndore or fraud would be a significant upgrade.

When tuning for high performance the upgrades in the following order.
1. the twit behind the wheel this is relatively easy and moves across very easily when you change cars.

2. Suspension if its not trying to axel tramp through a corner you are more likely to hold the throttle down further for longer.

3. Brakes if you can confidently brake latter you spend less time going slow.

Then you can start messing with power.

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I can see where you're going with this, how about removing the front drive shaft, running without a transfer case would be advantagous too! Of course you could go the whole hog and make it a convertable with an angle grinder, remove the doors and get rid of any unrequired trim, ie passenger and rear seats......ditch bullbars, winches, compressors, etc......

You'd end up saving a lot of fuel too, in between the circle work that is....:D

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Originally Posted by 1103.9TDI

I can see where you're going with this, how about removing the front drive shaft, running without a transfer case would be advantagous too! Of course you could go the whole hog and make it a convertable with an angle grinder, remove the doors and get rid of any unrequired trim, ie passenger and rear seats......ditch bullbars, winches, compressors, etc......

You'd end up saving a lot of fuel too, in between the circle work that is....:D

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So you mean something like this? :D

[ame=http://www.youtube.com/watch?v=JPp36EuuA9g]Diesel Funny car - YouTube[/ame]

Or theres this which has front tailshaft connected still...i think that the company that built it also build carcrafter22 injection pump and that run the truck used 6gallons of water via water injection and running 1000cc of fuel which somewhere on the net it explains how they get that much fuel and basically its by using a 12cyl pump on a 6cyl motor!

YouTube - Broadcast Yourself.m/watch?v=XAIHPzuqSc4&feature=youtube_gdata_player

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Originally Posted by isuzurover

So you mean something like this? :D

Diesel Funny car - YouTube

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Thats it, but with more smoke please....:D

Somebody mentioned an electrical lift pump to increase the fuel pressure before it reaches the IP?

Would a stock V8 carby version electrical lift pump do the job, or are we talking a 3PSI EFI jobbie?

I assume by pre-pressurizing the diesel, the IP does less work, there is less kW lost and also you get a higher nozzle pressure?

Or what? :confused: