The Range Racer
Discussion
charlie-5mkmt said:
Intake, the L322s intake is great for wading but rather floored for a performance car…..
er, you know that the std air intake on any modern car is effectively zero restriction yeah? Go see the engine team, ask them, i bet that engine would only gain a couple of bhp even if you replaced the entire clean and dirty ducting with a perfect trumpet. and of course, there is a lot more hot air at the back of the engine bay than at the front, and your intake is made of steel, which is much more conductive than plastic, so you'll get more upheat anyway.......(if you want it to sound nice, fine go for it, but you'll not be making any more power and chances are you'll be making less....)
Max_Torque said:
er, you know that the std air intake on any modern car is effectively zero restriction
I know you're in the game but I'm surprised - I thought more importance was placed on noise and driveability rather than outright power - IME (on older cars) you generally lost a bit of low / mid range but gained top end power.Max_Torque said:
charlie-5mkmt said:
Intake, the L322s intake is great for wading but rather floored for a performance car…..
er, you know that the std air intake on any modern car is effectively zero restriction yeah? Go see the engine team, ask them, i bet that engine would only gain a couple of bhp even if you replaced the entire clean and dirty ducting with a perfect trumpet. and of course, there is a lot more hot air at the back of the engine bay than at the front, and your intake is made of steel, which is much more conductive than plastic, so you'll get more upheat anyway.......(if you want it to sound nice, fine go for it, but you'll not be making any more power and chances are you'll be making less....)
I'd have thought a simple performance panel filter and some insulation to try and reduce air intake temp would be the best bet. Also more power would be gained by increasing the efficiency of the CAC I'd have thought, given how much of a weak point they are on the AJ133.
We have decided on our change cooler pump upgrade! As we have said before, the rangy keeps going into limp home mode after a small amount of “spirited” driving. This is due to the supercharger cooling system not keeping up.
So we need to upgrade the pump and we may have gone a little overboard! We have got our hands on a BMW electric engine cooling pump which is on a few of there more recent models. Cutting to the chace, we will be going from 17L/min to 200L/min! :O:O Lets hope that will help keep temps down a little.
Pipework is on the way so we can get this hooked up soon to see what sort of affect it has. The pump we have is the CWA400, as you can see its well over speced for charge cooling but hopefully it will help to keep the temps much lower. We shall fit some sensors to keep an eye on what its doing.
We have also started to give the wheels a lick of paint, silver wheels just didn't do it for us! There is no point trying to make a car perform on track if it doesn't look the part too.
So we need to upgrade the pump and we may have gone a little overboard! We have got our hands on a BMW electric engine cooling pump which is on a few of there more recent models. Cutting to the chace, we will be going from 17L/min to 200L/min! :O:O Lets hope that will help keep temps down a little.
Pipework is on the way so we can get this hooked up soon to see what sort of affect it has. The pump we have is the CWA400, as you can see its well over speced for charge cooling but hopefully it will help to keep the temps much lower. We shall fit some sensors to keep an eye on what its doing.
We have also started to give the wheels a lick of paint, silver wheels just didn't do it for us! There is no point trying to make a car perform on track if it doesn't look the part too.
Very amusing to see these have the same wheel setup as our X5. Luckily for the range racer it has many benefits for acceleration and handling, they really make the X5 handle very well too with great acceleration and stability. Fun ends there for the X5 however as for these wheels they require very specific, and therefore expensive, tyres that are approved by BMW for the X5. Tyres are at least more than double how much you all have got them for this car, and to think that you got the wheels alongside tyres too!
Proper gearbox service and map would definitely help the ZF unit to make considerably sharper changes, as it is that which likes to affect acceleration times, as the tyres will no longer be an issue for traction!
Proper gearbox service and map would definitely help the ZF unit to make considerably sharper changes, as it is that which likes to affect acceleration times, as the tyres will no longer be an issue for traction!
charlie-5mkmt said:
Hey All!
We haven't had much chance to work on the car this week.
The only thing we have managed to do is to wire up our switch to the air suspension relay. What this now allows us to do, is to kill power to the air suspension system with a simple switch on the dash. This means we can now drive around in access height all day without fear of the car raising as soon as we go over 30mph.
We have also planned a couple of outings with the beast. We are going to take the car to "caffeine and machine" this Friday afternoon, its a really cool place and really recommend a visit if your in the midlands.
Hoping to also take it out on our next track day to mallory park on the 24th on march (not booked yet but we are very likely to go)
On the p38 you can calibrate for four different height settings with a laptop. Why not just copy the access height values into the normal height locations.We haven't had much chance to work on the car this week.
The only thing we have managed to do is to wire up our switch to the air suspension relay. What this now allows us to do, is to kill power to the air suspension system with a simple switch on the dash. This means we can now drive around in access height all day without fear of the car raising as soon as we go over 30mph.
We have also planned a couple of outings with the beast. We are going to take the car to "caffeine and machine" this Friday afternoon, its a really cool place and really recommend a visit if your in the midlands.
Hoping to also take it out on our next track day to mallory park on the 24th on march (not booked yet but we are very likely to go)
https://www.rswsolutions.com/index.php/mkiii-eas-s...
eliot said:
On the p38 you can calibrate for four different height settings with a laptop. Why not just copy the access height values into the normal height locations.
https://www.rswsolutions.com/index.php/mkiii-eas-s...
That's doable on the pre '05 L322's but after this I believe you can only change the standard height and the other settings are fixed relative to that.https://www.rswsolutions.com/index.php/mkiii-eas-s...
charlie-5mkmt said:
So we need to upgrade the pump and we may have gone a little overboard! We have got our hands on a BMW electric engine cooling pump which is on a few of there more recent models. Cutting to the chace, we will be going from 17L/min to 200L/min! :O:O Lets hope that will help keep temps down a little.
Er, all you are going to do is burn the pump out.... These high volume water pumps designed for primary engine cooling at designed to operate at a relatively low deltaP. Yes, they can move 200l/min, but only at a 1 bar deltaP. Your CC system is massively restrictive, and so the pressure differential required to shove 200l/min though it would be in the order of 100bar or more!You'd be far better off simply fitting two of the standard pumps in series, so they share the deltaP. No you won't get twice the flow, but you will get some improvement in flow (Which won't make that much difference to the total heat rejection, because that is fundamentally driven by the deltaT to ambient and not the water mass flow)
Edited by anonymous-user on Tuesday 30th April 18:17
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