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01-07-2013, 04:05 PM
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Hummer Veteran
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Join Date: Sep 2012
Posts: 61
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Timing Chain
I have a 2003 H2. A friend had a timing chain on a 2005 PT Cruiser break at 100K miles, destroying a valve. He had to junk the car as it was too expensive to fix.
My H2 has 100400 miles. Should I replace the timing chain? Thanks for your help.
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01-07-2013, 06:58 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: Timing Chain
Chains with steel gears dont have to be replaced at 100K like the cheap cars with plastic gears do 
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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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01-07-2013, 08:03 PM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: Timing Chain
PT Cruiser has a timing belt which is a maintenance item at 100000km, chains are not a maintenance item
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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01-07-2013, 11:27 PM
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Hummer Veteran
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Join Date: Sep 2012
Posts: 61
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Re: Timing Chain
Thanks. I did not know PT Cruiser had plastic gears or that H2 has steel.
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01-08-2013, 01:36 AM
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Hummer Professional
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Join Date: Jan 2011
Location: Clayton, NC
Posts: 370
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Re: Timing Chain
belt*
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01-08-2013, 04:37 AM
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Hummer Veteran
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Join Date: Nov 2008
Posts: 143
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Re: Timing Chain
Mine is around 250K , but a friend had Perkins TD self-destruct at 60K!!! They don't make them like used to.
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Missing the times when things where made to last.
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01-08-2013, 04:39 AM
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Hummer Expert
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Join Date: Sep 2011
Location: Surprise, AZ
Posts: 717
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Re: Timing Chain
Back in the day the worst thing with timing chains were stretching over time and throwing your timing off. Now with all the computers and electronics that's no longer a worry as the comp will just compensate for any lost timing.
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01-08-2013, 04:42 AM
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Hummer Veteran
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Join Date: Nov 2008
Posts: 143
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Re: Timing Chain
Benz 300D im getting ready for my Rover...
It was reported to have 120,000 miles in 1992, but then driven regularly until 2009
Mathematically, if they continued to drive it ~13k miles a year until 2009, you're looking at almost 350k on it.
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Missing the times when things where made to last.
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