4runnerforum
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if you have a 4R w/ the factory rear air and considered a spacer inthe front but not interested in convertnig the rear to coils , you will understand my experiment below . feel free to share your experience or comments on the same
from the info. below.
I have installed the daystar 2.5 spacer to the front
I have then set the rear factory air to HIGH
I then turned off vehicle and pulled the 10a fuse from engine compartment box for the rear air
turn back on and drive , hits the 19mph and the indicator light still triggers a drop to the neutral setting BUT the vehicle does not lower , it remains at the high setting height
it holds pressure , handles beautifully-better than before , levels perfectly to match the front lift
the only issue is the blinking off light on the indicator because I pulled the fuse and the fact that the self levelling tothe new height is disabled because of the pulled fuse .. but I have a nice lifted ride with no ugly rake , so far .. no ill effects with this method (keep in mind that I have a perfectly functioning rear air susp. and xreas to begin with)
when it warms up or I get access to a warm shop I will put the fuse back in and do the sensor adjustment for rear air on the rear end so that I accomplish the exact same ride AND maintain my self-levelling (but levelling to the new increased height I gain by lengthening the sensors a 1/4 inch or so depending on my measure tests of the wheel well height vs sensor length)
many have state "don't pull the fuse" or "the rear goes crazy with any spacer in the font over .5 inch " but this is certainly not what is happening in my case
so far , a working rear air suspension fooled to two inches higher permanently via the pulled fuse or sensor adjust seems to work beautifully and provide a simple solution to lifting the 4R with factory rear air
I am still open to anyone explaining why this is "not a good idea" ????
The rear air system easily handles the 4R and is over-engineered given that is the highest available towing option for the 4R. IMO and testing , there is far less load an no ill effect compared to having a trailer load or extreme eight on the hitch from the simple, mild 2 inch growth in the bag that is already inflated on a permanent basis. In fact , with some testing I can also say that the factory bag can still go up an additional four inches more and still does not seem to be maxxed. That said I would NEVER expect to run the bags 6inch above neutral engineered height , I am just saying that they can and therefore I do not expect much extra stress on the system from taking the extra two inch , any different than any rear airbag "helper" taking up the slack from a heavy load.
I have no intrest in converting to coils in the rear with a custom bottom plate and clip until I have issues with the rear air nor do I have any intention of pulling the xreas system unless it ever fails.
from the info. below.
I have installed the daystar 2.5 spacer to the front
I have then set the rear factory air to HIGH
I then turned off vehicle and pulled the 10a fuse from engine compartment box for the rear air
turn back on and drive , hits the 19mph and the indicator light still triggers a drop to the neutral setting BUT the vehicle does not lower , it remains at the high setting height
it holds pressure , handles beautifully-better than before , levels perfectly to match the front lift
the only issue is the blinking off light on the indicator because I pulled the fuse and the fact that the self levelling tothe new height is disabled because of the pulled fuse .. but I have a nice lifted ride with no ugly rake , so far .. no ill effects with this method (keep in mind that I have a perfectly functioning rear air susp. and xreas to begin with)
when it warms up or I get access to a warm shop I will put the fuse back in and do the sensor adjustment for rear air on the rear end so that I accomplish the exact same ride AND maintain my self-levelling (but levelling to the new increased height I gain by lengthening the sensors a 1/4 inch or so depending on my measure tests of the wheel well height vs sensor length)
many have state "don't pull the fuse" or "the rear goes crazy with any spacer in the font over .5 inch " but this is certainly not what is happening in my case
so far , a working rear air suspension fooled to two inches higher permanently via the pulled fuse or sensor adjust seems to work beautifully and provide a simple solution to lifting the 4R with factory rear air
I am still open to anyone explaining why this is "not a good idea" ????
The rear air system easily handles the 4R and is over-engineered given that is the highest available towing option for the 4R. IMO and testing , there is far less load an no ill effect compared to having a trailer load or extreme eight on the hitch from the simple, mild 2 inch growth in the bag that is already inflated on a permanent basis. In fact , with some testing I can also say that the factory bag can still go up an additional four inches more and still does not seem to be maxxed. That said I would NEVER expect to run the bags 6inch above neutral engineered height , I am just saying that they can and therefore I do not expect much extra stress on the system from taking the extra two inch , any different than any rear airbag "helper" taking up the slack from a heavy load.
I have no intrest in converting to coils in the rear with a custom bottom plate and clip until I have issues with the rear air nor do I have any intention of pulling the xreas system unless it ever fails.
