500 Crankshaft bolt ??
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

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

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 15 of 15
500, 472, 425, 368 Discussion, 500 Crankshaft bolt ?? in Cadillac Engine Technical Discussion; Was gonna turn the engine over via the crankshaft bolt to get at the torque converter bolts but there is ...
  1. #1
    RanzeD is offline Cadillac Owners Member
    Join Date
    Sep 2005
    Location
    South Carolina
    Age
    48
    Posts
    14

    500 Crankshaft bolt ??

    Was gonna turn the engine over via the crankshaft bolt to get at the torque converter bolts but there is none. Seems to me there are threads there for one - is a Caddy motor like Chevy and Pontiac meaning there SHOULD be one there?

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    The Ape Man's Avatar
    The Ape Man is offline Cadillac Owners Connoisseur
    Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
    Join Date
    Feb 2005
    Location
    Southern NJ
    Age
    52
    Posts
    2,096

    Re: 500 Crankshaft bolt ??

    Nope. None of them have the bolt. They are assembled with a fixture and then it gets removed. They stay together fine. Welcome to better toleranceville.

  4. #3
    RanzeD is offline Cadillac Owners Member
    Join Date
    Sep 2005
    Location
    South Carolina
    Age
    48
    Posts
    14

    Re: 500 Crankshaft bolt ??

    Thanks a bunch. A mechanic (?) here said it needs one and the crank will walk without it eventually chewing up the mains. Suggested I bring it to him now. Imagine that. The Caddy dealership / service dept locally had no idea. I wonder if they have mechanics there... Guess I needed that welcome to toleranceville after all.

  5. #4
    lux hauler is offline Cadillac Owners Connoisseur
    Join Date
    Jan 2003
    Location
    Ohio
    Age
    44
    Posts
    1,258

    Re: 500 Crankshaft bolt ??

    They actually came from the factory with a cork stuck in the threaded hole.

  6. #5
    The Ape Man's Avatar
    The Ape Man is offline Cadillac Owners Connoisseur
    Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
    Join Date
    Feb 2005
    Location
    Southern NJ
    Age
    52
    Posts
    2,096

    Re: 500 Crankshaft bolt ??

    I forgot all about the cork. Thanks for the reminder. Yup the guys at the Cadillac plant sat around at the end of the day toasting all the new powerplants.

  7. #6
    The Ape Man's Avatar
    The Ape Man is offline Cadillac Owners Connoisseur
    Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
    Join Date
    Feb 2005
    Location
    Southern NJ
    Age
    52
    Posts
    2,096

    Re: 500 Crankshaft bolt ??

    Quote Originally Posted by RanzeD
    Thanks a bunch. A mechanic (?) here said it needs one and the crank will walk without it eventually chewing up the mains. Suggested I bring it to him now. Imagine that. The Caddy dealership / service dept locally had no idea.
    Don't expect too many dealershit mechanics to know anything specific about something that old. All those guys bailed out of Cadillac when they got killed swapping HT4100's on warrantee time.

  8. #7
    caddydaddy's Avatar
    caddydaddy is offline Cadillac Owners Connoisseur
    Automobile(s): 2005 Escalade 6.0L 2WD, 2007 Jeep Grand Cherokee Limited CRD
    Join Date
    Jan 2003
    Location
    Gales Ferry, CT
    Age
    33
    Posts
    3,668

    Re: 500 Crankshaft bolt ??

    The crank hub is just press fit on there! It's a beeotch to get off, and back on with a puller. And yes, like someone mentioned, there was a small cork placed in the hole to protect the threads from dirt.

  9. #8
    lux hauler is offline Cadillac Owners Connoisseur
    Join Date
    Jan 2003
    Location
    Ohio
    Age
    44
    Posts
    1,258

    Re: 500 Crankshaft bolt ??

    You can put a bolt in the crank but they ARE press fit on.....a bolt isn't necessary. If you choose to use a bolt, the size is 9/16-18.

  10. #9
    74eldog is offline Cadillac Owners Fanatic
    Automobile(s): 74 Eldorado
    Join Date
    May 2005
    Location
    Columbus, Ohio
    Posts
    149

    Re: 500 Crankshaft bolt ??

    Quote Originally Posted by lux hauler
    You can put a bolt in the crank but they ARE press fit on.....a bolt isn't necessary. If you choose to use a bolt, the size is 9/16-18.

    I bought a bolt that is 9/16 but couldn't turn the motor.

    My question is does the "18" refer to length of the bolt threads?

    If so then I bought the wrong length, i bought one kinda short and another one kinda long.

  11. #10
    fleetwood76's Avatar
    fleetwood76 is offline Cadillac Owners Fanatic
    Automobile(s): 1976 FLEETWOOD brougham
    Join Date
    Jan 2005
    Location
    northern sweden
    Age
    41
    Posts
    354

    Re: 500 Crankshaft bolt ??

    Hello.
    18 has nothing to do with the actual lenght of the bolt, if it's long or short.
    18 stands for how many treads there is per inch - if it is a UNC or UNF kind of bolt. If you have been able to screw the bolt in you have the right bolt, and the lenght schould be that the bolt head, with washer, become fully seated agaist crankshaft, with atleast 1 inch of treaded bolt screwed in the crankshaft.

    jolle

  12. #11
    74eldog is offline Cadillac Owners Fanatic
    Automobile(s): 74 Eldorado
    Join Date
    May 2005
    Location
    Columbus, Ohio
    Posts
    149

    Re: 500 Crankshaft bolt ??

    Quote Originally Posted by fleetwood76
    Hello.
    18 has nothing to do with the actual lenght of the bolt, if it's long or short.
    18 stands for how many treads there is per inch - if it is a UNC or UNF kind of bolt. If you have been able to screw the bolt in you have the right bolt, and the lenght schould be that the bolt head, with washer, become fully seated agaist crankshaft, with atleast 1 inch of treaded bolt screwed in the crankshaft.

    jolle
    Ok so the threads inside the bolts are only 1 inch long? and what is UNC and UNK?

    I will try it again this weekend, and maybe even jack it up, and use my flywheel turner

    Thanks

  13. #12
    fleetwood76's Avatar
    fleetwood76 is offline Cadillac Owners Fanatic
    Automobile(s): 1976 FLEETWOOD brougham
    Join Date
    Jan 2005
    Location
    northern sweden
    Age
    41
    Posts
    354

    Re: 500 Crankshaft bolt ??

    hello.
    I'm not sure i know what you mean with your first sentence. I don't know how far in, in the cranckshaft the hole in the crankshaft is treaded, but i thought that if a bolt goes in about a inch there is no risk of stripping the treads by try to turn the crankshaft.

    the UNC and UNF is a standards of bolts it means:
    UN = Unified
    C = Coarse there is also a Fine version of Coarse but they both called UNC.
    F = Fine- or, really extra fine

    When i looked at a site i see that 9/16 18 is the finer UNC tread.

    I add the link

    http://www.efunda.com/DesignStandard...s/screwunc.cfm

    Jolle

  14. #13
    74eldog is offline Cadillac Owners Fanatic
    Automobile(s): 74 Eldorado
    Join Date
    May 2005
    Location
    Columbus, Ohio
    Posts
    149

    Re: 500 Crankshaft bolt ??

    Thanks,,, i got out there and played around earlier today,,,

    Last week, it didn't dawn on me to cut the belts off until i got out there today, and it was a little warmer...

    I cut the belts; put a wrench on the motor and it turned ;;SMOOTH AS BUTTER....

    IT FRICKIN MADE MY DAY,,,

    I plan to pull the motor in a couple of weeks to clean, paint and bring back to life....

  15. #14
    JTraik is offline Cadillac Owners Enthusiast
    Automobile(s): '68 DeVille '95 FWB '99 Eldo '96 Cummins Ram 5MT
    Join Date
    Mar 2004
    Location
    Rochester, NY
    Age
    27
    Posts
    760

    Re: 500 Crankshaft bolt ??

    Quote Originally Posted by 74eldog
    I cut the belts; put a wrench on the motor and it turned ;;SMOOTH AS BUTTER....
    That just means you have no compression!

  16. #15
    74eldog is offline Cadillac Owners Fanatic
    Automobile(s): 74 Eldorado
    Join Date
    May 2005
    Location
    Columbus, Ohio
    Posts
    149

    Re: 500 Crankshaft bolt ??

    Actually that means, my motor is not locked up...!!!!!


    mechanics 101; if you can turn your motor (rotate by hand)....

    the belts were rusted on to the pulleys...

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting