eas hieght change durations?

[Datatek]

L322 Calibration measurements are taken from the bottom of the Wheel Rim not the centre of the wheel rim like the P38...

So a different Rim Dia. will effect the ride height measurement!

OK so you can drop the height to compensate for the wheel diameter. It can only be cosmetic as the EAS has no idea what wheels are fitted.

 

[paulvasey]

surely you would lift the height? isnt the idea to keep the clearance between the tyre and the wheel arch the same regardless of wheel diameter?

 

[paulvasey]

and saint , if its just a pin hole in your rad why not empty a bottle of k seal in there? itl outlast the rad

 

[West Slope Rover]

and saint , if its just a pin hole in your rad why not empty a bottle of k seal in there? itl outlast the rad

Now you've started the K-Seal debate!

 

[paulvasey]

what k seal debate? its seriously gud stuff! is it not???

 

[Datatek]

surely you would lift the height? isnt the idea to keep the clearance between the tyre and the wheel arch the same regardless of wheel diameter?

Larger diameter wheels usually come with lower profile tyres so the rolling radius is the same as is the clearance to the wheel arch, otherwise the speedo would be out, unless of course the L322 speedo can be re-calibrated for different wheel tyre combinations.
Calibration seems to be a pointless operation with a change of wheels.

 

[West Slope Rover]

what k seal debate? its seriously gud stuff! is it not???

It depends on who you ask. Some give it a "thumbs up" and other say that it can clog up the heater matrix (we call it the heater core) and other important things. When I had a pinhole leak in my rad and asked about the stuff, the response seemed to be 50/50 yum and yuck.

I figured why risk it and had the rad repaired instead of using it.

 

[paulvasey]

mmm youre right i guess,so why it suggested you re calibrate if you have 22inch on?

 

[paulvasey]

back to k seal.i doubt it would clog the core on a lr or rr as surely they are just small rads unlike on say a small car?

 

[West Slope Rover]

back to k seal.i doubt it would clog the core on a lr or rr as surely they are just small rads unlike on say a small car?

All I know is what I've been told. Do a search and read for yourself. I just choose the option with the least risk. As Miyagi said, "Best defense is no be there".

http://www.landyzone.co.uk/lz/f16/radiator-stop-leak-additives-good-bad-164211.html

 

[Saint.V8]

Larger diameter wheels usually come with lower profile tyres so the rolling radius is the same as is the clearance to the wheel arch, otherwise the speedo would be out, unless of course the L322 speedo can be re-calibrated for different wheel tyre combinations.
Calibration seems to be a pointless operation with a change of wheels.

mmm youre right i guess,so why it suggested you re calibrate if you have 22inch on?

The All Comms system and the Land Rover system both use the measurement to the bottom of the wheel rim....

The calibration procedure is thus:

The EAS system places the car into a 'known' ride height reading from the sensors i.e. so all sensors are reading 120.

You then go around the vehicle and measure the physical height of the vehicle from the bottom of each wheel rim as an example:

FR = 705
FL = 695
RR = 715
RL = 725

You plug these physical heights into the calibration system - the EAS then works out that from its datum reading of 120 in order to ensure the car sits at the correct ride height of say 750 allround it needs to adjust the sensor readings by X amount to acheive that....

If you don't take into account the different Rim sizes then the EAS system will be doing its calculations using the wrong distances.

The EAS system uses height sensors mounted on the Suspension links and the subframe and it measures the distance from the two.....i.e it keeps the wheel centre distance from the wheel arch at the same distance....if you stick larger rims on, the bottom of the rim will be closer to the ground - so if you don't take into account the rim size the calibration will be out...

The P38 method is much better as you measure the offset from wheel arch to wheel centre whereas the L322 is done to bottom of the Rim, which will vary depending on the rim size - so you have to tell the EAS system calibration what size rims you have!!

 

[paulvasey]

had a gander at that thread.i think k seal technology it a lot more advanced than the old rad seals i would have no issue with using it but i can understand your trepidation

 

[Deasy]

back to k seal.i doubt it would clog the core on a lr or rr as surely they are just small rads unlike on say a small car?

I'm not pointing fingers, but I put a bottle in mine to fix a rad leak

2 weeks later (not saying it was cause, prob just coincidence)
Water pump went, garage said although it was buggerd everything was caped in kseal, fixed that

Then thermostat went,
Replaced the rad for good measure anyway

Then the exchange water pump went

All within a few weeks of each other

 

[Deasy]

I wouldn't personally use it again, I'd just fix it properly, ends up costing you the money anyway

 

[paulvasey]

mmm im having trouble absorbing that saint, maybe a blond moment

 

[Saint.V8]

I wouldn't personally use it again, I'd just fix it properly, ends up costing you the money anyway

+1

Hence why even though I have a pin prick hole in mine - I'll replace the rad when I have topped up the car fund again following the fuel pump!

 

[Saint.V8]

mmm im having trouble absorbing that saint, maybe a blond moment

It is a little complicated but once you have used the Calibration software you kinda understand why you have to make allowance for large rims....

The idea is to keep the door sill height the same off the ground...

Lets say as standard the Wheel Arch to Wheel Rim measurement is 750mm

If you have large rims the distance between Arch and Rim is further lets say 770mm

The EAS calibration sets the car at a sensor height reading of 120points - you then measure your distances - as standard the system EXPECTS to see 750mm so when you put 770mm in, it thinks it is riding 20mm higher than it should so it'll lower the car to take that into account....UNLESS you tell it you are running larger rims and as such the system will then EXPECT to see 770mm and adjust accordingly....

On the P38 the distance between Wheel Arch and Wheel Centre measurement will always be the same regardless of rim size...

 

[paulvasey]

so am i right in saying if it is say properly calibrated for 20in wheels. you can still 22in on without recalibrating?

 

[Saint.V8]

so am i right in saying if it is say properly calibrated for 20in wheels. you can still 22in on without recalibrating?

Yes.....BUT if you needed to Re-Calibrate i.e. you replaced a sensor - you would need to tell the calibration software that the measurements you are taking are on a set of 22"s .....

As mentioned the rolling radius on 22"s is the same as 20"s so the ride height is the same.....until you have to re-calibrate....which is when you'll have to tell it to make allowance for the measurement difference

 

[paulvasey]

yer im there now, so to tell if it needs recalibrating you can just go round doing physical measurments from say top of tyre to wheel arch to see if they are all the same?