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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 05-03-2009, 08:59 PM
DuckTruck DuckTruck is offline
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Default Re: 2 Inch Lift on H2.

UPDATE:

I just had the Cognito 2-3" lift put on the H2. It is a fantastic kit and installation was easy.

Before my rear end was obviously higher than my front, just like every other stock H2. Now, my rear is still at 42" (bottom of fender to ground) and my front end is 43 1/2". Thus, this kit easily gave me 2" of lift if not more.

DUCK
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2003 H2, Lux & Adv Packages, Cognito 3" front suspension lift, Gobi Stealth Rack w/ Ladder, Navigation, twin Optima battery setup, AirRaid Intake, Granatelli Mass Air Flow Sensor, Flowmaster Big Block II Exhaust, Diablosport Predator Programmer,Cognito Pitman/Idler Arm Kit, Fabtech Tie Rods, Rancho RS 9000 shocks, Warn bumper and 9.5x winch, Warn light bar, PIAA's everywhere (14), everything blacked out, and rollin' on 39.5" Super Swamper IROKs on black powdercoated stock wheels.
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  #2  
Old 05-04-2009, 01:40 AM
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Default Re: 2 Inch Lift on H2.

Did my lift yesterday acutally. I made spacers for the rear airide springs. Then did the Green Keys for the front. The end result of my lift was about
1-1/4" of lift in the front. and about 2-1/2" in the rear. I also have 37" tires so the truck is rideing 2-2 1/2" hirer than stock. Over all it looks really good. With me only going a little 1-1/4" inches hirer in the front I did not do new shcoks. However..... When I do get new the full cognito set up I will go further up
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Old 05-04-2009, 01:41 AM
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Default Re: 2 Inch Lift on H2.

Did my lift yesterday acutally. I made spacers for the rear airide springs. Then did the Green Keys for the front. The end result of my lift was about
1-1/4" of lift in the front. and about 2-1/2" in the rear. I also have 37" tires so the truck is rideing 2-2 1/2" higher than stock. Over all it looks really good. With me only going a little 1-1/4" inches higher in the front I did not do new shocks. However..... When I do get new the full cognito set up I will go further up.
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Old 05-04-2009, 02:16 AM
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Default Re: 2 Inch Lift on H2.

Quote:
Originally Posted by HumminNBoatin'
Did my lift yesterday acutally. I made spacers for the rear airide springs. Then did the Green Keys for the front. The end result of my lift was about
1-1/4" of lift in the front. and about 2-1/2" in the rear. I also have 37" tires so the truck is rideing 2-2 1/2" higher than stock. Over all it looks really good. With me only going a little 1-1/4" inches higher in the front I did not do new shocks. However..... When I do get new the full cognito set up I will go further up.

Do you have more info. on the rear spacers and pics? Did you do anything different for your brake lines, shocks, or, ride height sensors?
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Old 05-04-2009, 03:06 PM
DuckTruck DuckTruck is offline
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Default Re: 2 Inch Lift on H2.

Quote:
Originally Posted by HumminNBoatin'
Did my lift yesterday acutally. I made spacers for the rear airide springs. Then did the Green Keys for the front. The end result of my lift was about
1-1/4" of lift in the front. and about 2-1/2" in the rear. I also have 37" tires so the truck is rideing 2-2 1/2" higher than stock. Over all it looks really good. With me only going a little 1-1/4" inches higher in the front I did not do new shocks. However..... When I do get new the full cognito set up I will go further up.


Yeah, I too would like more info. on the air susp. spacers.

Thanks,

DUCK
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2003 H2, Lux & Adv Packages, Cognito 3" front suspension lift, Gobi Stealth Rack w/ Ladder, Navigation, twin Optima battery setup, AirRaid Intake, Granatelli Mass Air Flow Sensor, Flowmaster Big Block II Exhaust, Diablosport Predator Programmer,Cognito Pitman/Idler Arm Kit, Fabtech Tie Rods, Rancho RS 9000 shocks, Warn bumper and 9.5x winch, Warn light bar, PIAA's everywhere (14), everything blacked out, and rollin' on 39.5" Super Swamper IROKs on black powdercoated stock wheels.
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  #6  
Old 05-04-2009, 05:30 PM
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Default Re: 2 Inch Lift on H2.

I did not take any pix.

If you take your air spring out you will notice that the weight of the truck rides on a PLASTIC Cylinder with a bolt through the center to the axel to keep in centered.

Unbolt the plastic cylinder. Get some longer bolts to match how much you want to lift. I went 1 1/2" inches higher with the spacers. So I got bolts that were 1 1/2" inches longer. Note MAKE SURE YOU GET GRADE 10.9 BOLTS They are metric. I cannot remember the size. I want to say they are an M10 but do not hold me too it.

Then you need to get washers that will have the same a diameter as the inside surface of the cylinder. Then get 2" PVC pipe and cut your desired spacing height. I cut off two 1-1/2" pieces They (PVC) pipes will encase the bolt and washers and line up with the outer diameter of the cylinder. Run the bolt through the Cylinder, the washes and PVC pipe and torque down.

Get a 4" diameter piece of PVC and cut to same length. This will be outer diameter of the air spring bucket to set on. Snap the air spring back into place and inflate it buy putting the hose in your mouth so you can line up the outer PVC spacer with the spring on the axel. Then hook the lines to your compressor. Hit it with some flat black paint and your done building the spacer.

I know it sounds hokey etc.... But it works and it works well. I immediately flexed the hell out of the suspension and inspcected to make sure nothing was loos or moving around. Everything held Extremely tight even with the suspension all twisted.

I did not take any pix I will take some with my cell phone at lunch so you can see the end result.

After adding the spacers you have to trick the height sensors by adjusting them to get desired ride height. I used a Tec2 to do this.
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Last edited by HumminNBoatin' : 05-04-2009 at 05:32 PM.
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  #7  
Old 05-04-2009, 07:40 PM
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Default Re: 2 Inch Lift on H2.

Ok I took some pix with my BB at lunch.



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  #8  
Old 05-04-2009, 09:01 PM
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Default Re: 2 Inch Lift on H2.

Nicely done!

DUCK
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2003 H2, Lux & Adv Packages, Cognito 3" front suspension lift, Gobi Stealth Rack w/ Ladder, Navigation, twin Optima battery setup, AirRaid Intake, Granatelli Mass Air Flow Sensor, Flowmaster Big Block II Exhaust, Diablosport Predator Programmer,Cognito Pitman/Idler Arm Kit, Fabtech Tie Rods, Rancho RS 9000 shocks, Warn bumper and 9.5x winch, Warn light bar, PIAA's everywhere (14), everything blacked out, and rollin' on 39.5" Super Swamper IROKs on black powdercoated stock wheels.
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  #9  
Old 06-02-2009, 03:22 PM
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Default Re: 2 Inch Lift on H2.

The truck before the discussed lift:


And after the discussed lift:
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