Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

Results 1 to 12 of 12

Thread: Coolant crossover

  1. #1
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    Location
    mpls mn
    Posts
    2,527
    Question on 05+ northstar motors. Since the front of heads has the cam sprockets, does GM still use a rear mounted coolant crossover design? I am talking about the rear wheel drive cars. Like the Sts, srx?


  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    69
    Posts
    82,278

    Re: Coolant crossover

    I don't believe so. I think the crossover and rear mounted W/P went away when the engine became longitudinally mounted.

  4. #3
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    Location
    mpls mn
    Posts
    2,527
    I think the coolant crossover has upper ports for the heads and lower ports that attach to the block? Kind of like a "K" shape. How they fit that onto the front of a rwd motor with cams/chains seems real awkward. Maybe the intake is a wet design.

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    69
    Posts
    82,278

    Re: Coolant crossover

    Quote Originally Posted by stoveguyy View Post
    Maybe the intake is a wet design.
    It doesn't "appear" to be.

    http://www.gmpartsgiant.com/Page_Pro...X=D&SortKey=48




    http://www.gmpartsgiant.com/Page_Pro...008&SortKey=49

  6. #5
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    Location
    mpls mn
    Posts
    2,527
    Wow. The front of the fwd motor seems so simple now.

  7. #6
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    Location
    MD Eastern Shore, Kent Island
    Age
    77
    Posts
    56,854

    Re: Coolant crossover

    Maybe yes, maybe no - try to get to the oil pump or timing chains..................... without removing the entire throttlebody assembly, A/C and radiator systems.

  8. #7
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    Location
    mpls mn
    Posts
    2,527
    I see the pic with the front cover sort of neglects to show the end of the crankshaft?

  9. #8
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    Location
    MD Eastern Shore, Kent Island
    Age
    77
    Posts
    56,854

    Re: Coolant crossover

    Those diagrams are from the external engine parts section. Further snooping in www.gmpartsgiant.com will open the internal parts diagram.

  10. #9
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
    Join Date
    Aug 2007
    Location
    mpls mn
    Posts
    2,527

    Re: Coolant crossover

    so the front cover is hollow? or partially hollow since the waterpump mounts to the casting and coolant flows thru it and the timing chains are behind the cover and are in an oil bath.

  11. #10
    scott f's Avatar
    scott f is offline Cadillac Owners Fanatic
    Automobile(s): 2002 STS/ 1994 STS
    Join Date
    Oct 2010
    Location
    Oshawa, Ont. Canada
    Posts
    229

    Re: Coolant crossover

    I don't see the typical "EGR" either

  12. #11
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Location
    Woodstock Ill.
    Age
    69
    Posts
    82,278

    Re: Coolant crossover

    That's because the RWD Northstar (LH2) also got "continuously variable valve timing on both intake and exhaust sides", eliminating the need for EGR.

  13. #12
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    Location
    MD Eastern Shore, Kent Island
    Age
    77
    Posts
    56,854

    Re: Coolant crossover

    deleted...............


Bookmarks

Cadillac Posting Rules

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Read about Lincoln | Buick | Kia Forte Forum