1-1.5" AHC Sensor Lift....rear spring spacer needed?

[lethal1]

I am only looking for a very mild lift (1-1.5") for my new 33s and wasn't sure if it's would even be worth doing the spring spacer in the rear. Would it just depend on the pressures or something more? Thanks!!

 

[saleach]

Use the search feature. It's been covered to death.

Long story short, add the spacer, buy techstream software, make sure AHC pressure are in spec.

 

[92LXAZ]

Pretty much correct. The coil spring spacers bring the globe pressure back into spec only. Adjusting the 3 AHC sensors is what provides the lift you speak of.

 

[bozncsurf]

Chances are you need the spring spacer even if you don't lift it. Given the age of the springs your pressures are already high.

 

[chipsterguy]

What is the expected life of springs on these vehicles?

 

[lethal1]

Chances are you need the spring spacer even if you don't lift it. Given the age of the springs your pressures are already high.

Thanks @bozncsurf that's the sort of info I was looking for. Truck rides pretty smooth but I'm sure it could use new springs or spacers in the rear.

 

[Clunky]

Thanks @bozncsurf that's the sort of info I was looking for. Truck rides pretty smooth but I'm sure it could use new springs or spacers in the rear.

You may have seen this in my other thread, but I just put in new OEM rear springs and 30mm spacers, then had the neutral pressures brought to 6.9 front and 6.0 rear. The impact on my driving experience has been amazing.

 

[PADDO]

@lethal1 if you're at stock weight then doing a 1inch sensor lift will raise your front pressure by approx. 2.2MPa and the rear pressure by approx. 0.6MPa. To compensate you'd be looking at ~ 10 cw turns on both torsion bar bolts for the front and adding 30mm spacers at the rear, which will lower rear pressure approx. 0.6MPa. Doing this should pretty much negate the negative affect the lift has on pressures. Of course the best way to approach all this is to be able to read pressures and make your adjustments accordingly, and appreciate that if you haven't tuned your suspension it's almost guaranteed your starting pressures are high.

 

[lethal1]

@lethal1 if you're at stock weight then doing a 1inch sensor lift will raise your front pressure by approx. 2.2MPa and the rear pressure by approx. 0.6MPa. To compensate you'd be looking at ~ 10 cw turns on both torsion bar bolts for the front and adding 30mm spacers at the rear, which will lower rear pressure approx. 0.6MPa. Doing this should pretty much negate the negative affect the lift has on pressures. Of course the best way to approach all this is to be able to read pressures and make your adjustments accordingly, and appreciate that if you haven't tuned your suspension it's almost guaranteed your starting pressures are high.

Thank you very much for that info. Now that the 33s are on I'll get the lift and pressures in order and re-align it.