Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: Connecting rod help!
          
   
   

Reply To Thread
Results 1 to 6 of 6

Hybrid View

  1. #1
    MadMax's Avatar
    MadMax is offline CHR Member Visit my Photo Gallery
    Join Date
    May 2004
    Location
    Munich
    Car Year, Make, Model: 1983 Chevy 5,7l G20
    Posts
    213

    Well, there's certainly a few things you can do:
    Switched caps are a serious problem. Get it wrong and you might spin a bearing in the first thousand miles. Check out these things:
    1) The caps and rods have camfers on the big end. These camfers have to go towards the thrust side of the crank. Check to see if the camfers on the rods AND caps show this way:
    Cylinder # 1,3,5,7: camfer to the front of the engine
    Cylinder # 2,4,6,8: camfer to the back of the engine
    Where two rods meet (i.e. 1 and 2, 3 and 4, ...) there is never a camfer.
    Switch this and the uncamfered side of the rod will drag on the radius ground onto the crank where the journal meets the thrust face.
    2) Does the crank spin freely without the rods installed?
    If not, then of course you'll have to check your main bearings
    3) Take the pistons out again and check if the caps match the rods visibly or not. You can probably see hone-marks on the journal bore. If these line up, you've got the caps and rods correct.

    Check in this order and you should be OK. If you're in doubt anywhere along this line and you're not 100% sure that everything is correct, take the rods back to the machine shop and tell them to reface and hone them.

    That's what I would do, but let's see whether someone else has any ideas...

    Hope I could help you a bit,
    Max
    Harharhar...

  2. #2
    chevymotorhead's Avatar
    chevymotorhead is offline CHR Member Visit my Photo Gallery
    Join Date
    Mar 2005
    Location
    San Antonio
    Car Year, Make, Model: 72 Chevorlet Chevelle
    Posts
    102

    Hey max thanks for all the suggestions, and yes the crank spins freely without the rods installed.

Reply To Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink