Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Best way to support an engine while replacing rear main seal...

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by fortcollinsram, Mar 25, 2002.

  1. fortcollinsram

    fortcollinsram 1/2 ton status

    Joined:
    Nov 8, 2001
    Posts:
    2,261
    Likes Received:
    0
    Location:
    Fort Collins, CO
    I am going to pulling my tranny this weekend and begine swapping in the stuff for my manual conversion...while I am in there, I plan on replacing th erear main seal on my engine...what do you all feel is the best way to support the engine when I drop the oil pan? to do the seal...I have actually thought about renting a engine hoist for the purpose...any ideas?

    Chris
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,170
    Likes Received:
    1,380
    Location:
    E-town baby!
    I let my exhaust system and motor mounts support the motor...

    Rene
     
  3. bigmack

    bigmack 1/2 ton status

    Joined:
    Jan 3, 2002
    Posts:
    478
    Likes Received:
    0
    Location:
    Tennessee
    The motor mounts will hold the motor in place, you don't need any additional support.
     
  4. TULSAK5

    TULSAK5 Registered Member

    Joined:
    Feb 20, 2002
    Posts:
    93
    Likes Received:
    0
    Location:
    Broken Arrow, Oklahoma
    Jack stand under the oil pan. Don't let it rest on the motor mount. The rubber will separate from the steel. Another thing, watch to make sure the distributer doesn't hit the firewall. This can bend the shaft or crack the cap.

    Chris
     
  5. DesertDueler

    DesertDueler 1/2 ton status

    Joined:
    May 23, 2001
    Posts:
    3,106
    Likes Received:
    0
    Location:
    Phoenix, AZ
    You do want to support it with more than the motor mounts. It weakens them putting that force on them ( the motor rocks back). A strap from the motor to the radiator support, frame, where ever is enough. You just need to take the tension off.
     
  6. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Won't the jack stand under the oil pan make it pretty tough for him to remove the oil pan? /forums/images/icons/wink.gif
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Welcome to the world of 1 piece rear main seals, my friend. /forums/images/icons/smile.gif You've got a '75, I've got an '84, and both of us were thinking the same thing for a minute there.

    I have an '87 1 ton 2wd with a 1 piece rear main seal though, and, looking at it, it can probably be changed with the oil pan on.....but I'm not for sure, it doesn't leak so I'm not messing with it.
     
  8. chevyracing

    chevyracing 1/2 ton status

    Joined:
    Sep 8, 2001
    Posts:
    2,589
    Likes Received:
    0
    Location:
    Colorado
    The best way is to suspend the rear of the engine from a hoist. Do not ever support an engine by the oil pan because it compresses the gasket and will cause leaks.

    John
     
  9. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    I'd just let it fall back in the mounts. Both of my trucks are in my garage right now with the transmissions out of them, and that's exactly how the motors are sitting....in the mounts, rocked back.
     
  10. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Ahh, since in the main post he stated that he needed to drop the pan, I just figured that he was changing out an old rope seal. /forums/images/icons/cool.gif
     
  11. 84_Chevy_K10

    84_Chevy_K10 Banned

    Joined:
    May 30, 2001
    Posts:
    17,669
    Likes Received:
    0
    Location:
    IL, USA
    Rope? What's the point in changing one of those anyway? Won't it leak no matter what you do?
     
  12. DesertDueler

    DesertDueler 1/2 ton status

    Joined:
    May 23, 2001
    Posts:
    3,106
    Likes Received:
    0
    Location:
    Phoenix, AZ
    That what I thought:) (rope seals)
     
  13. HarryH3

    HarryH3 1 ton status Author

    Joined:
    May 31, 2000
    Posts:
    10,384
    Likes Received:
    2
    Location:
    Georgetown, TX
    Yeah, but new ones leak slower than old ones. /forums/images/icons/wink.gif
     
  14. RedDwarf

    RedDwarf 1/2 ton status

    Joined:
    May 9, 2001
    Posts:
    816
    Likes Received:
    0
    Location:
    North Central Florida
    What kind of seal do you have? What year is your engine?

    I must have missed that part....
     
  15. fortcollinsram

    fortcollinsram 1/2 ton status

    Joined:
    Nov 8, 2001
    Posts:
    2,261
    Likes Received:
    0
    Location:
    Fort Collins, CO
    1987 K5, 350 FI, so a 1-piece rear main....

    Chris
     
  16. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

    Joined:
    Apr 21, 2001
    Posts:
    5,634
    Likes Received:
    0
    Location:
    Escondido, CA
    a 4x4 with chains drooped over on each side bolted to the heads.
    grant
     
  17. MudbogAD

    MudbogAD 1/2 ton status

    Joined:
    Jun 29, 2001
    Posts:
    672
    Likes Received:
    0
    Location:
    Las Vegas Nevada, US
    I would use a jackstand with a block of wood.
     

Share This Page