Thread: Doing LIM/Valve Cover Gaskets... what else?

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  1. #1 Doing LIM/Valve Cover Gaskets... what else? 
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    2004 Pontiac Grand Prix GT2 190,000 km (118,000 mi)

    Over my Christmas break, I'm going to take a stab at doing my lower intake manifold gaskets and valve cover gaskets (I've got coolant slowly pooling on my block, and drip lines from the valve covers, pics to come). I've got the following parts on hand already:

    3x Fuel Injector O-Ring FEL-PRO Part # ES70599 4 Per Pack
    FEL-PRO Part # MS98014T Intake Manifold Gasket Set PermaDryPlus®


    I need to order:


    ** Engine : Valve Cover Grommet FEL-PRO Part # ES72833 Set
    ** Engine : Valve Cover Gasket FEL-PRO Part # VS50080R PermaDry®

    While I'm in there, what else should I replace? If I recall correctly, the UIM is aluminum and can be reused, so this shouldn't be an issue. What other things should get replaced while I'm on my way to the LIM?

    EGR? PCV? Other acronyms?
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  2. #2 Re: Doing LIM/Valve Cover Gaskets... what else? 
    I live here. TLSheff's Avatar
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    The EGR should just unbolt at the LIM and shouldn't require a gasket.

    If you plan to remove the Throttle Body for any reason, you'd need a gasket for that.

    Otherwise, I think on 04+ there is a coolant elbow that you could replace while it's off, most are going for the aluminum ones but the OEM replacement would work. After time they get brittle, crack, and you have a heck of a coolant leak. Consider it.

    http://www.grandprixforums.net/tips-...job-70236.html
    Read ^^^

    Quote Originally Posted by AmericanSoldier View Post
    ...not scanning/monitoring your motor is like bangin a hooker and you just HOPE your not infected.
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  3. #3 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    Been there, done the coolant elbow a few times. Not planning on removing the throttle body, but maybe not a bad idea to pick up as well.
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  4. #4 Re: Doing LIM/Valve Cover Gaskets... what else? 
    GTP Level Member Burbman's Avatar
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    Depending on what other service has been done....I replaced the plastic UIM, which comes with gasket, pcv and FI orings. I also did the water pump, heater hoses, elbows, plugs and wires while I was in there.
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  5. #5 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    Quote Originally Posted by Burbman View Post
    I replaced the plastic UIM

    What year do you drive? Maybe Billboost37 can confirm, but pretty sure the UIM isn't plastic on the Series III.
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  6. #6 Re: Doing LIM/Valve Cover Gaskets... what else? 
    I live here. TLSheff's Avatar
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    No Series II was plastic, the SIII is metal

    Quote Originally Posted by AmericanSoldier View Post
    ...not scanning/monitoring your motor is like bangin a hooker and you just HOPE your not infected.
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  7. #7 Re: Doing LIM/Valve Cover Gaskets... what else? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Enough oil for 2 oil changes, plus 1 quart to wash away any debris in the valley.

    SMGPFC Member #1
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  8. #8 Re: Doing LIM/Valve Cover Gaskets... what else? 
    GTP Level Member Burbman's Avatar
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    I stand corrected, I have a series II.
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  9. #9 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    If I'm replacing the valve cover gaskets, should I also pull out the rockers/pushrods/springs and clean that area out too?

    Are rocker bolts only available through a stealership?
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  10. #10 Re: Doing LIM/Valve Cover Gaskets... what else? 
    Moderator dsmuts's Avatar
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    I wouldn't unless you are upgrading
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  11. #11 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    All of the UIM/LIM bolts are resuable, right?

    And as far as sealants go, something with PTFE should work fine for them?
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  12. #12 Re: Doing LIM/Valve Cover Gaskets... what else? 
    Turbo is the way to go. BillBoost37's Avatar
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    Yes on ptfe, aka I like a plumbing paste I found at home depot with ptfe. Basically it's liquid teflon.

    You have a black plastic upper intake? If yes.. search on me and L36 UIM failure, then How to mod a LIM. Both are important if you are L36 and not L26.

    On the TB, always remove it and clean it with a can of TB cleaner. It's well worth the effort while things are apart.

    Your gasket kit will come with some black rtv for the corners of the LIM, beyond that you shouldn't need any. I do like to have a case or two of brake cleaner on hand (I nearly drink the stuff), it's great for taking any oil etc off the gasket surfaces for the new gaskets.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  13. #13 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    The manifold itself is not plastic... thankfully I have an L26



    I did buy a TB gasket so no problem cleaning it out. I'll pick up some TB cleaner along with a bunch of brake cleaner, only have one can of it on hand.

    You should consider switching from brake cleaner to scotch or whisky... might not be cheaper, but damn it's tastier
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  14. #14 Re: Doing LIM/Valve Cover Gaskets... what else? 
    Turbo is the way to go. BillBoost37's Avatar
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    you won't need that much. It was a joke on my part. I do buy by the case.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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    I live here. DirtDog's Avatar
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    On the 04 gp u shouldn't have to replace the tb gasket. If I remember correctly its a runner ring type thing. It won't hurt to do it though. I had an 04 and took tb off multiple times and never replaced that.

    Sent from my pager using Morse code. ... .. ... ....
    http://www.grandprixforums.net/my-06-gp-gxp-72403.html
    OBX headers, TEP tranny cooler, ls1 IM fuel rails and injectors, ls2 TB, ls7 MAF, full custom exhaust, Quad retro headlights, full out front and rear suspension work, tuned by HPT by me 8====>

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  16. #16 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    My brain isn't working right now...


    "Thread lock compound GM P/N 12345382 (Canadian P/N 10953489)" - a quick search revealed this is Loctite 242 Blue. I have a tube of Oatey Pipe Joint Compound with PTFE (Withstands up to 3,000 PSI on gases from -50° to +400°F, and 10,000 PSI on liquids from -50° to +500°F). Can I use this in place of the thread locker, or should I go buy a tube of Loctite for the torque spec?
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  17. #17 Re: Doing LIM/Valve Cover Gaskets... what else? 
    Turbo is the way to go. BillBoost37's Avatar
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    Being that I didn't say thread locker, yes. Being that it's the same goop I use, you bet!

    You don't actually need to lock the threads, you need to seal them.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  18. #18 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    Well I'm off to the races. About to disconnect the evap purge solenoid. My rear spark plugs were being a bit of a bastard, so I disconnected them at the coil and fed them backwards. Draped across my windshield now.
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  19. #19 Re: Doing LIM/Valve Cover Gaskets... what else? 
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    Got the LIM off. Have a look at this pudding!


    As well as the pair of gaskets


    original gallery: imgur: the simple image sharer

    What's the best way to get that sludge out? Pull the lower rad outlet and flush with water?
    Last edited by apok; 12-20-2012 at 10:44 PM.
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  20. #20 Re: Doing LIM/Valve Cover Gaskets... what else? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Lots of flushes with water once the car is back together.

    Don't forget to dump oil down the valley to wash anything away and do oil changes right after you are done.

    SMGPFC Member #1
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