Head Gasket Replacement - Chevy and GMC Duramax Diesel Forum
04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 01-29-2012, 06:19 PM   eBay Motors  #1 (permalink)
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Head Gasket Replacement

So I've been dealing with the hard rad hose problem in my truck for the last while and I've deduced that my head gaskets are the problem. I'm going to start tearing into it in the near future and want to make sure I'm prepared for the job. Are there any special tools I'll need? Which gaskets or seals am I going to need? What's the best way to set the valve lash? Any tips you guys can give me would be great. Thanks. BTW I'm going to be using studs and I was wondering if I have to use the arp lube or if I could just use blue loctite or something
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2004 sierra 2500hd
LLY slt 4x4
crew cab short box

295/75/17 cooper stt's on chrome H2s
leveled, 2" blocks in the rear, tie rod sleeves,

Diablosport Predator, AFE mouthpiece, Sinister egr delete, pcv reroute, LML drivers side manifold, ARP head studs, shimmed relief valve, exhaust dumped right after downpipe
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Old 01-29-2012, 06:41 PM   eBay Motors  #2 (permalink)
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Merchant Auto, Creatures of the Night, Aligator and other [supporting vendors for this forum] has the gasket set you need. Most everyone puts "C" head gaskets back on-- even though you may take off "A" or "B" gaskets.

The ARP studs come with the special lube.

Take lots of pictures during the tear down-- that will help a lot.

Put the new studs in the drivers head--[two very back and the two rear bottom] I used tape, but anything to hold them when installing the head. install the rest of the studs after the heads are on.
I also cut a short piece of aluminum -- drilled a hole in the center and used two rocker bolts to make a couple handles for installing the heads.

I installed the driver's side exhaust manifold on the head before I installed it.

Use lots of plastic bags, and write on the bag what the parts are for. When you can, put the bolts and nuts with the part you remove-- sure helps during re-assemble.

Again-- take lots of pictures.

Keep everything sealed with tape-or-?, so dirt and parts cannot fall into them and ruin the motor.

Be sure all fuel parts are squeaky clean.
Merchant has instructions on the his website, for setting the valves.
Remember--cylinders are numbered-- Passenger side [Right] 1-3-5-7 Driver's side [Left] 2-4-6-8

Good time to replace the water pump.

Good Luck
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Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry

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Old 01-29-2012, 06:45 PM   eBay Motors  #3 (permalink)
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Let me know if you need prices and any help with the install.
Darryl
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Old 01-29-2012, 08:26 PM   eBay Motors  #4 (permalink)
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Yep I'll be going with grade C head gaskets and the arp studs. Did you replace all the injector o rings? And I'll most likely be getting the heads machined and tested is there anything else I should be doing with them?
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2004 sierra 2500hd
LLY slt 4x4
crew cab short box

295/75/17 cooper stt's on chrome H2s
leveled, 2" blocks in the rear, tie rod sleeves,

Diablosport Predator, AFE mouthpiece, Sinister egr delete, pcv reroute, LML drivers side manifold, ARP head studs, shimmed relief valve, exhaust dumped right after downpipe
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Old 01-29-2012, 09:21 PM   eBay Motors  #5 (permalink)
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I just done mine a week ago an I did water pump,glow plugs,block heater,an starter. Every thing that's easy to do wen tor down!
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Old 02-18-2012, 01:23 PM   eBay Motors  #6 (permalink)
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So I started the job last night. How can I remove the steering shaft so I have more room for the driver side head? And should I order new o-rings and crush gaskets for the injectors?
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2004 sierra 2500hd
LLY slt 4x4
crew cab short box

295/75/17 cooper stt's on chrome H2s
leveled, 2" blocks in the rear, tie rod sleeves,

Diablosport Predator, AFE mouthpiece, Sinister egr delete, pcv reroute, LML drivers side manifold, ARP head studs, shimmed relief valve, exhaust dumped right after downpipe
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Old 02-18-2012, 02:23 PM   eBay Motors  #7 (permalink)
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And do i need a fuel line tool to disconnect the two fuel lines beside the glowplug controller?
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2004 sierra 2500hd
LLY slt 4x4
crew cab short box

295/75/17 cooper stt's on chrome H2s
leveled, 2" blocks in the rear, tie rod sleeves,

Diablosport Predator, AFE mouthpiece, Sinister egr delete, pcv reroute, LML drivers side manifold, ARP head studs, shimmed relief valve, exhaust dumped right after downpipe
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Old 02-18-2012, 02:52 PM   eBay Motors  #8 (permalink)
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Yes-- be sure you get the fuel ones-- the AC tool looks like it, but they are to short to reach the clips.
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Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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Old 02-18-2012, 04:08 PM   eBay Motors  #9 (permalink)
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did you remove your stearing shaft?
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2004 sierra 2500hd
LLY slt 4x4
crew cab short box

295/75/17 cooper stt's on chrome H2s
leveled, 2" blocks in the rear, tie rod sleeves,

Diablosport Predator, AFE mouthpiece, Sinister egr delete, pcv reroute, LML drivers side manifold, ARP head studs, shimmed relief valve, exhaust dumped right after downpipe
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Old 02-18-2012, 05:04 PM   eBay Motors  #10 (permalink)
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No, but if you do, be sure you do not turn the steering wheel-- If you do, it will break the "$500 -Clock Spring"

I sugggest you move the seat up, and run the seat belt through the steering wheel so it will not move. It has to go back in the same flat on the shaft.
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Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
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