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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 01-17-2006, 11:01 PM
OrangeCrush OrangeCrush is offline
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Though I've done the programming, 4.56 gears and Magna cat back setup, I wasn't going to touch the headers even when I install the supercharger.

However, I've noticed the last few weeks a "ticking" sound that sounds like an exhaust leak coming from the engine compartment.

I looked at the driver's side manifold and the last stud closest to the firewall is broken off (WTF?)

Anyway, I thought about dropping the manifold and since a part of it will still be sticking out, it shouldn't be a problem getting it out...

Unless of course, I just put headers on it.

Any point of doing so? The older I get the more I stay away from headers since I hate messing with flange and collector gaskets blowing out all the time.

Are the H2 headers like the corvette headers where they fit almost perfectly and have no chance of leakage?

Opinions?

Thanks,

Mark
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  #2  
Old 01-17-2006, 11:01 PM
OrangeCrush OrangeCrush is offline
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Though I've done the programming, 4.56 gears and Magna cat back setup, I wasn't going to touch the headers even when I install the supercharger.

However, I've noticed the last few weeks a "ticking" sound that sounds like an exhaust leak coming from the engine compartment.

I looked at the driver's side manifold and the last stud closest to the firewall is broken off (WTF?)

Anyway, I thought about dropping the manifold and since a part of it will still be sticking out, it shouldn't be a problem getting it out...

Unless of course, I just put headers on it.

Any point of doing so? The older I get the more I stay away from headers since I hate messing with flange and collector gaskets blowing out all the time.

Are the H2 headers like the corvette headers where they fit almost perfectly and have no chance of leakage?

Opinions?

Thanks,

Mark
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  #3  
Old 01-18-2006, 06:29 PM
H2 Bill H2 Bill is offline
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Just stay away from the Edelbrock shorties, I had 2 sets go bad and they wouldn't stand behind them. The shop that did the installation has taken back close to a dozen of them with the same problem and Edelbrock wouldn't do anything about them. I went with the Borla and they seem to be good.
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2003 H2 Hummer, Yellow,Polished Whipple Supercharged, Dynatech long tube headers, catback,18\" Ambush w/Toyo MT\'s,lots of goodies!
Y2K Corvette Millennium Yellow Convert/Blk/Blk, B&B headers, B&B Tri-Flo\'s, H-Tech MAG,GMS MAF, RM Racing TwinFlow.
1994 Chev Suburban Blown
1970 Trans Am balanced, blueprinted, ceramic headers, etc.
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  #4  
Old 01-18-2006, 08:33 PM
OrangeCrush OrangeCrush is offline
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Thanks Bill,

I agree, I won't be using shorty's anyway. If I'm going with headers, I want long tubes.

I'm pleased with Magnaflow and Borlas I've had on previous vehicles, that'll be who I go with.

How do you like your headers on your H2? Are they shorties or long tubes?

Thanks,

Mark
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  #5  
Old 01-19-2006, 01:59 AM
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HUMMERcustoms.com/TAZ HUMMERcustoms.com/TAZ is offline
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Hi guys
On the headers I recommend You go with dynatech long tube or long neck as some call them from old days. T-304 stainless steel can get in a full catback system. I have run them for a while and like them allot. I'm running the full catback.

Put on a lift or a floor jack with jack stands and get front tires off one person on each side. Both pull a wheel off and then remove the inner fender liner and your staring right at the exhaust manifold and You come out with them and back with headers. Not as bad with gaskets this way but, still have not found a way to ever prevent the little wrestling match You get into but, it is not much. Go back with liner and tire let it down and You are installed with guys on both sides in 30 minutes if lucky but, 1 hour at the most. We have done that and add more work while it was up and tires and inner fender off and still finish in an hour.

TAZ
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05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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  #6  
Old 01-19-2006, 01:33 PM
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Can the stock ECM compensate for the leaner condition caused by the headers? If not, how are you guys working around this?
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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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  #7  
Old 01-19-2006, 04:27 PM
H2 Bill H2 Bill is offline
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Mine are shorties. Nobody at the time made any that were cafe certified. They do help I'm sure because of the S/C.
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2003 H2 Hummer, Yellow,Polished Whipple Supercharged, Dynatech long tube headers, catback,18\" Ambush w/Toyo MT\'s,lots of goodies!
Y2K Corvette Millennium Yellow Convert/Blk/Blk, B&B headers, B&B Tri-Flo\'s, H-Tech MAG,GMS MAF, RM Racing TwinFlow.
1994 Chev Suburban Blown
1970 Trans Am balanced, blueprinted, ceramic headers, etc.
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  #8  
Old 01-19-2006, 04:50 PM
kdio kdio is offline
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I am running http://www.theotherguysproducts.com/ they are a long tube header and cermic coated. They still look as good as the day I bought them. I have put about 45,000 miles with no issues.
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03 H2 Sunset Orange Magna Charger w headers & cold air intake, 4\" Rancho lift, XTC Light Bars Front & Rear, 4.56 gears with Eaton Front Locker
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