Thread: Value of GTP Comp G running vs non running

Results 1 to 7 of 7
  1. #1 Value of GTP Comp G running vs non running 
    SE Level Member
    Join Date
    Jul 2016
    Location
    TX
    Posts
    2
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Hello gentlemen,

    I recently bought a GTP Comp G that needs a little work. It overheats rather quickly, and haven't had the chance to investigate thermostat or head gasket. I know if its a head gasket/head issue, its leaking into the exhaust and not the oil because the oil is clean. Car has been sitting up awhile, so could just be a stuck thermostat.

    My question is about value. Lets assume the worst and it needs the head gaskets replaced, or even go as far as the motor replaced. What is the value today for a 2004 Comp G running vs non running? I know the cars are getting harder to find, so its worth doing something with. Just not sure if I should fix it to sell, or sell it as it is.

    All opinions are welcomed. Thanks guys!
    Reply With Quote  
     

  2. #2 Re: Value of GTP Comp G running vs non running 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,022
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    I'd bet money on the failure of the lower intake before a head gasket. Too many people get the diag wrong and say head gasket, the lower intake gasket failure is 10x more common.

    It's a $1,000 car not running and maybe 3-4k running depending on where you live and mileage. Maybe 5k if it's really nice.

    SMGPFC Member #1
    Reply With Quote  
     

  3. #3 Re: Value of GTP Comp G running vs non running 
    GrandPrix Junkie SgtMarshal's Avatar
    Join Date
    Feb 2012
    Location
    Kemmerer, Wyoming
    Posts
    4,701
    Thanks (Received)
    10
    Likes (Received)
    25
    Dislikes (Received)
    0
    X2 on intake manifold gaskets. I haven't been around as long as 5fingerdeathpunch and don't know as much as he, but ive seen a few times where the intake manifold gaskets failed and people thought it was a head gasket. it takes me a few hours to change those gaskets because I'm slow, but I know of several people that can have the whole thing done in 30 minutes.
    Reply With Quote  
     

  4. #4 Re: Value of GTP Comp G running vs non running 
    GTP Level Member 231FUN's Avatar
    Join Date
    Dec 2011
    Location
    Ontario,Canada
    Posts
    861
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    99% of the time the head gasket diagnolsis is wrong and it's the LIM gaskets...even so called mechanics seem to have a hard time with this one
    Reply With Quote  
     

  5. #5 Re: Value of GTP Comp G running vs non running 
    SE Level Member
    Join Date
    Jul 2016
    Location
    TX
    Posts
    2
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Wow, I really appreciate the advice. Do you guys just buy them at your local Autozone, or is there a better version you buy from an aftermarket vendor?
    Reply With Quote  
     

  6. #6 Re: Value of GTP Comp G running vs non running 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,921
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    rockauto, the magnum lower intake gasket kits comes with the most extra parts and is the same upgraded metal gaskets. its like 42 shipped with a 5% off code.

    that being said, the supercharged engines don't suffer the same fate as the na engines upper intake failing and eating coolant.

    in your case before you spend money, pull the plugs, crank the engine over, if coolant comes out its likely a head gasket, if nothing comes out, do a compression test. if theres a bad head gasket this test will tell you.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  7. #7 Re: Value of GTP Comp G running vs non running 
    GrandPrix Junkie SgtMarshal's Avatar
    Join Date
    Feb 2012
    Location
    Kemmerer, Wyoming
    Posts
    4,701
    Thanks (Received)
    10
    Likes (Received)
    25
    Dislikes (Received)
    0
    Go to rock auto and get the magnum set. Its a good quality set that comes with a lot of extras
    Reply With Quote  
     

Similar Threads

  1. l67 engine wont stay running..got the car running. tons of white smoke from exhast
    By Doug 97 gtp in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 7
    Last Post: 06-17-2013, 05:14 PM
  2. 03 Top Swap running hot UP AND RUNNING
    By The Guz in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 35
    Last Post: 05-02-2013, 02:19 PM
  3. Car Running Bad HELP
    By NoIdea in forum How To Write-Ups/Tech Tips
    Replies: 4
    Last Post: 03-08-2013, 06:44 PM
  4. GTP Running Rough.. few new parts but still not running right.. HELP
    By azmattaz06 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 6
    Last Post: 05-29-2010, 02:34 PM
  5. Trying to get 2.8 running again!
    By 1988 Grand Prix in forum General Tech Discussion
    Replies: 0
    Last Post: 10-03-2009, 12:35 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •