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08-12-2012, 10:55 PM
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Hummer Guru
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Join Date: Oct 2005
Location: Charlotte, NC
Posts: 2,767
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Airbags for the rear?
Does anyone know who sells (if anyone) airbags for the rear of my H2 with Rancho lift?
I have found airbags if the truck didn't have a lift but unable to find any for an H2 with a lift.
I really want a set to tow with and I can't see why I can't modify a set to make work.
Anyone know?
Thanks,
Mark
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08-24-2012, 11:21 PM
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Hummer Guru
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Join Date: Oct 2005
Location: Charlotte, NC
Posts: 2,767
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Re: Airbags for the rear?
Just for the record, in case anyone is interested, I ended up buying a set of Firestone bags from a Ford Expedition for 85.00 from Summit.
I installed them, pump up the pressure to about 40 lbs and they stop the Hummer from sagging from pulling my enclosed trailer.
Drove over 1500 miles round trip and it never waivered. Works great.
Mark
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08-25-2012, 12:31 AM
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Hummer Veteran
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Join Date: Mar 2009
Location: Southern Maryland
Posts: 139
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Re: Airbags for the rear?
Hey Mark, I've been looking for HD Coil springs for the rear because it drops significantly when on the gas. Guruerror pointed me in the direction of a manufacturer that used to make them for the H2 but since they are no longer in production they want an insane amount of money to fab a set up. I was considering doing air bags and may go that route now that I've read your post. How is the overall ride while not towing?
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08-25-2012, 01:20 AM
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Hummer Expert
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Join Date: Feb 2008
Location: Portland, OR
Posts: 948
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Re: Airbags for the rear?
I'm looking at getting rid of my entire system if youre interested. It all works.
__________________
_____________________________________
2006 HUMMER H2
MOOG Front End
Diablo InTune w/DiabLew Tune
Cognito Steering Support
OBX LT Headers
Air Raid Filter w/Tube
External Trans Cooler -Radiator Bypass
Corvette Servo
Rancho 9000 Adjustable Shocks-
Rancho Steering Stabilizer
20" Chrome Fuel Hostage - Cooper ST Maxx
Slotted Rotors/Ceramic pads/Steel Lines
Viper Smart Start
iPod/Video Interface
HID Head and Fog Lights
Optima Red Top w/ Priority Start Cut Off Mod
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08-25-2012, 02:55 AM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Airbags for the rear?
Air Lift aftermarket bags work great. I am not sure you need longer bags for a lifted rig as they only need to support a few of the coils, as they do on a stock height H2 anyhow - they dont touch top or bottom of OEM coils.
__________________
H2 SUT 4.56 Gears, Front Locker, Cognito Pitman/Idler kit & Idler Pivot Kit, Fab Tech Tie Rods, True Tech Trailing Arms, Edelbrock Panhard Rod, PML rear Diff & Tranny Pans, Corsa Exhaust, Dynatech LT Headers, Diablo Predator Programmer, Volant CAI, Warn 9500 Winch, Escort 8500x50 & ZR3 Laser Shifter, Delta Light Bar, Rancho Steering Stabilizer & Bilstein Shocks, Ron Davis Radiator, PowerSlot Rotors, Hawk Brake Pads
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09-01-2012, 05:08 PM
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Hummer Veteran
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Join Date: Jan 2008
Location: High in the Colorado Rockies
Posts: 210
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Re: Airbags for the rear?
Quote:
Originally Posted by tomp
Air Lift aftermarket bags work great. I am not sure you need longer bags for a lifted rig as they only need to support a few of the coils, as they do on a stock height H2 anyhow - they dont touch top or bottom of OEM coils.
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Well the instructions for the Air Lift 1000 bags say to locate the air bag at the bottom of the coil, but even in that position the bag doesn't reach to the top of the coil so it doesn't do much when inflated to actually raise the truck as much as it actually adds to the spring rate of the coils. Also for off-road application, running 2 separate (dual) airlines from the airbags is the way to go (as opposed to joining the two airbag airlines with a "T" fitting).
__________________
'05 H2 Lux, 37" KM2's on 17" Hutchinson Double Beadlocks, Cognito UCA's, Cognito Sway Bar Links, Custom Hydro-Assist Steering Upgrade, Eaton Front Differential Locker, 1" Rear Coil Spacers, Chevy Green Key Torsion Bar "Lift," Bilstein Shocks, Warn 9.5ti Multimount Winch, Dual Optima Yellow Top Battery's, Piaa & Hella Off-road lights, Gobi Rack, Tru-cool External Transmission Oil Cooler, Diablo Predator Hi-Octane Tune.
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08-25-2012, 03:28 AM
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Hummer Guru
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Join Date: Oct 2005
Location: Charlotte, NC
Posts: 2,767
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Re: Airbags for the rear?
Quote:
Originally Posted by pwrhse2k
Hey Mark, I've been looking for HD Coil springs for the rear because it drops significantly when on the gas. Guruerror pointed me in the direction of a manufacturer that used to make them for the H2 but since they are no longer in production they want an insane amount of money to fab a set up. I was considering doing air bags and may go that route now that I've read your post. How is the overall ride while not towing?
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The ride is great if you keep the pressure down around 30-40lbs. (which incidentally is enough to support weight from a trailer)
If you put it up to 50, then the ride is a tad bit harsher. (not obnoxious, but noticeable)
I just dropped them down to 20-30 lbs and leave them.
Easy to install, cheap to buy, works great.
Quote:
Originally Posted by tomp
Air Lift aftermarket bags work great. I am not sure you need longer bags for a lifted rig as they only need to support a few of the coils, as they do on a stock height H2 anyhow - they dont touch top or bottom of OEM coils.
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Yes, I found that out too. I thought the airbags supported the weight by increasing in height. It's expanding width that pushes on the springs that stops the springs from compressing too much.
My springs are 16" long. The bags are 13" tall. Stock H2 backs are 10" long.
Mark
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