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2002-2005 Range Rover MkIII / L322
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Discussion Starter #1
Does anyone have a link to performance figures for the P38A when it was introduced?

I thought I had a book of road tests but I can't find it.
 

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http://autos.msn.com/research/vip/Spec_ ... &trimid=-1

2000 Land Rover Range Rover 4.6 HSE Summary

The HSE is Range Rover's third trim tier. The 5000 pound SUV is powered by a larger 4.6 liter V-8, generating 222 horsepower and 300 pound-feet of torque. The 0 to 60 acceleration dips below ten seconds here, and towing capacity jumps to 6500 pounds. The HSE's fuel economy is estimated at 12/15 mpg.

The HSE and SE are similarly equipped, with the primary difference being engine size. Standard features include steering wheel audio controls, a harmon/kardon audio system with a CD changer, dual-zone climate control, power front seats, leather upholstery, keyless entry, heated seats, a roof rack, electro-chromatic side and rear view mirrors, a brush guard, an air dam, and a self-leveling suspension system. A navigation system is optional.

Land Rover Discovery 0 to 60 mph and Quarter Mile Times

1995 Land Rover Discovery 0-60 mph 11.4 Quarter mile 18.2

1999 Land Rover Discovery Series II 0-60 mph 9.8 Quarter mile 17.2

2000 Land Rover Discovery Series II 0-60 mph 10.3 Quarter mile17.7

Range Rover Hunter 0 to 60 mph and Quarter Mile Times

1991 Range Rover Hunter 0-60 mph 12.0 Quarter mile 18.1

Range Rover County 0 to 60 mph and Quarter Mile Times

1991 Range Rover County SE 0-60 mph 10.9 Quarter mile 18.0

1993 Range Rover County LWB 0-60 mph 11.0 Quarter mile 17.9

Range Rover 4.0, 4.6 0 to 60 mph and Quarter Mile Times

1996 Range Rover 4.0 SE 0-60 mph 11.6 Quarter mile 18.2

1998 Range Rover 4.6 HSE Vitesse 0-60 mph 9.6 Quarter mile 17.1

1999 Range Rover 4.6 HSE 0-60 mph 9.4 Quarter mile 17.0

1999 Range Rover 4.6 HSE Callaway 0-60 mph 8.5 Quarter mile 16.6

Land Rover LR2, LR3 0 to 60 mph and Quarter Mile Times

2007 Land Rover LR3 HSE 0-60 mph 8.5 Quarter mile 16.6

2008 Land Rover LR2 SE 0-60 mph 9.1 Quarter mile 16.8

Range Rover Sport 0 to 60 mph and Quarter Mile Times

2007 Land Rover Range Rover Sport HSE 0-60 mph 8.6 Quarter mile 16.5
 

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1991 0-60 is 12 seconds and quarter in 18 :lol: , OMG I forgot how slow my 1990 was. Guess I didnt pay attention when going over curbs and medians :wink:
 

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2002-2005 Range Rover MkIII / L322
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Discussion Starter #4
Ahh. Thank you very much. I had my 4.6 engine modified when it was rebuilt and I'm only getting to 80 km/h (50 mph) in 14 seconds which is much slower than expected. I'm seeing the engine builder on Monday. Even he agrees the performance seems poor.

I haven't timed it to 60mph - I'll do that tomorrow on the freeway.
 

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Timed mine many times years ago on a flat road with no wind, i was below 9 for 0-100 (Kmh).
I should time it again to see if decatt+NGK Iridium+ Magnecore gives hp.
 

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1995-2002 Range Rover P38A
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p38arover said:
Ahh. Thank you very much. I had my 4.6 engine modified when it was rebuilt and I'm only getting to 80 km/h (50 mph) in 14 seconds which is much slower than expected. I'm seeing the engine builder on Monday. Even he agrees the performance seems poor.

I haven't timed it to 60mph - I'll do that tomorrow on the freeway.
Holy cow Ron,

it sounds like your engine is way wrong. I guess it feels like the gears are changing at the right times for you and it is not misfiring, and you trust your engine guy then I would be looking at the fuel and air. Also dont forget to check all the dumb easy stuff. Plugs, leads, air filter, MAF plugged in, fuel line not squished up, etc.

What mods are done on the motor? I am keen to know how she performs once you get it sorted out.

Cheers Mick
 

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Ron - I thought yours went like a bat out of hell? Or was that before this set of engine mods?

From the above list , What is an 'air dam'?
 

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1995-2002 Range Rover P38A
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Hi Kamran,

an "air dam" is the front lip spoiler. In fact the term air dam is more correct than spoiler but who cares anyway, right. :D

Just out of curiosity, does anyone have the performance figures for the bosch injected models?

Cheers
Mick
 

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2002-2005 Range Rover MkIII / L322
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Discussion Starter #11
Ka177ran said:
Ron - I thought yours went like a bat out of hell? Or was that before this set of engine mods?

From the above list , What is an 'air dam'?
Before.
 

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LIFETIME CONTRIBUTOR
2002-2005 Range Rover MkIII / L322
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Discussion Starter #12
Rat_RR02 said:
Holy cow Ron,

it sounds like your engine is way wrong. I guess it feels like the gears are changing at the right times for you and it is not misfiring, and you trust your engine guy then I would be looking at the fuel and air. Also dont forget to check all the dumb easy stuff. Plugs, leads, air filter, MAF plugged in, fuel line not squished up, etc.

What mods are done on the motor? I am keen to know how she performs once you get it sorted out.
The gears seem to change at the right time and smoothly. The engine builder is a long time LR specialist and so I'll have him test drive the car.

The cats seem to be working (no O2 sensors on this model) - I checked them with an IR thermometer and the outlet is much hotter than the inlet.

New liners and high compression pistons, full dynamic balance, stage 2 cam, de-shrouded valves, ported, port matched, etc. Haltech Interceptor fitted and fuelling adjusted. The dyno run was done a couple of weeks back when the Haltech was fitted. I had it fitted to get dual ignition mapping for LPG/petrol and to adjust the petrol fuel maps.

The dyno run and Haltech install were done by a different LR specialist.



 

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Interesting charts.
I see the Haltech runs the petrol richer, and gets noticably more power, while it runs the LPG leaner to get more power.
I guess it's all in the different combustion characteristics.

Looking at the prints in general:
I guess the headline figure is power at the wheels.
Looking at the bottom of the chart:
BP is the same on both charts, so my initial guess of power as BHP is obviously wrong.
RH + Relative Humidity?
AT = Ambient Air Temperature?
IT = Inlet manifold Air Temperature?
RR = ?
TN = ?
Some other numbers refer to the dyno.
TP = Tyre Pressure ? Did they really pump them up to 50psi? I understand the justification, two contact patches giving greater than normal distortion, with the higher pressure resisting that and keeping the tyre temperature (and drag) down. I'm mainly interested that they made the adjustment, if they did.
Gear is obvious :)

Thanks for the views, interesting

Good Luck with the investigation.
 

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2002-2005 Range Rover MkIII / L322
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Discussion Starter #14
BP is the same on both charts, so my initial guess of power as BHP is obviously wrong.
RH + Relative Humidity? I think so
AT = Ambient Air Temperature? Probably, 19 deg C is about right for this time of year (winter)
IT = Inlet manifold Air Temperature? I think so
RR = ? Dunno
TN = ? Dunno
Some other numbers refer to the dyno.
TP = Tyre Pressure ? Yep, it's actuall spelled otu, not abbreviated. Even though we are metric, we tend to still use PSI
Not sure what BP is, I'll ask around. I'm going to my local motorbike shop tomorrow - next door is a Dyno Dynamics dyno (they dynoed a couple of my bikes) so I can ask them.

I've just looked at 5 different dyno curves I've received from other AULRO members and the RR and TN figures are the same despite the wide spread in time between then.

Power is quoted in kW in Australia and is, as you assumed, at the wheels.

I spoke with the dyno opertator/tuner today and he's sending me a printout with torque curves. Overlaid will be the dyno run for another 4.6 P38A, the car I drove yesterday and which has nearly 25kw more at the wheels than mine.

For those not sure about kW, my figure of 74.6kW equates to exactly 100BHP.
 

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For those not sure about kW, my figure of 74.6kW equates to exactly 100BHP.
Wow and to think my little motobike puts out 186.69 rear wheel horse power... 8)
 

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Discussion Starter #16
Shadow Keeper said:
For those not sure about kW, my figure of 74.6kW equates to exactly 100BHP.
Wow and to think my little motobike puts out 186.69 rear wheel horse power... 8)
With a bit less torque and a lot more revs! :D
 

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hi Ron,
hmmm, those are very professional places so its hard to believe they could miss the really dumb stuff. Only thing I can think of, thats easy, is check the throttle butterfly is fully open when the accelerator pedal is fully depressed. I guess a test drive by the engine guy will be the best bet. If the engine is all good then maybe the gearbox is slipping....

Cheers Mick
 

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p38arover said:
Shadow Keeper said:
For those not sure about kW, my figure of 74.6kW equates to exactly 100BHP.
Wow and to think my little motobike puts out 186.69 rear wheel horse power... 8)
With a bit less torque and a lot more revs! :D

110.68 ftlb of torque not too shabby for a Kwaka...
 
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