Page 1 of 2 1 2 LastLast
Results 1 to 10 of 14

Thread: Is my bottom end f**ked?

  1. #1
    Veteran v-tec's Avatar
    Join Date
    Dec 2008
    Name
    Grant
    State
    QLD
    Location
    Gold Coast
    Country
    Australia
    Posts
    2,373

    Default Is my bottom end f**ked?

    hey guys, wanted to ask about this on here i think cause i just want someone to tell me this isnt the case, but i guess i would be neive to think its not.....

    When me and my mate were pulling apart the ze to do the head gasket my mate pointed out to me when piston #1 is at TDC, piston #4 sits about 2mm lower.
    My mate is telling me that it could be a couple of things.. different height piston, bent rod, bent crank... or some gay'd up bearings.
    Regardless of what it is, its not good and it pretty much needs to be a rebuilt...

    If i have to pull this thing apart again im going to be shattered and i cant see my motor going in anytime soon...

    so can someone give me some hope? lol
    http://img530.imageshack.us/img530/731/43367425735d6c87ce7bo.jpg

  2. #2
    User fantapants's Avatar
    Join Date
    Dec 2008
    Name
    Pat
    State
    TAS
    Location
    Other
    Country
    Australia
    Posts
    1,635

    Default

    when piston 4 is at tdc is it at the right height or the lower hieght? could simply be the crank is not perfectly plumb? not that thats a simply hey
    RIP Carly - a smile to light the world.
    06/07/2011

  3. #3
    Senior Member Sprinter86's Avatar
    Join Date
    Dec 2008
    Name
    Nathan
    State
    VIC
    Location
    Lilydale
    Country
    Australia
    Posts
    701

    Default

    when i spun a bearing in my smallport, i pulled the head off, and i quickly saw this very thing. to make sure, you can turn the motor over, just past tdc, then stick a long screwdriver down piston number 4 spark plug hole, and try and push the piston down, if you feel it 'clunk', like it moved down a few mm, you probably have stuffed bearings.

    stuffed bearings would be my first though,

  4. #4
    Veteran
    Join Date
    Dec 2008
    Name
    Dave
    State
    QLD
    Location
    Brisbane
    Country
    Australia
    Posts
    2,667

    Default

    doesnt sound to good there grant...

    i assume you have it on an engine stand? if so spin it around and rip that sump off. and the bearing caps, you will quickly see if you got stuffed bearings. pluss if you get that far you might as well spend a bit on rebuilding it anyway.

    not much nicer than a freshly built engine...but it does suck when you find out it NEEDS it...rather than you WANTING to rebuild it...good luck mate

  5. #5
    E-Famous (Remeber your roots)
    Join Date
    Dec 2008
    Name
    marvis
    State
    QLD
    Location
    Lower Brisbane
    Country
    Australia
    Posts
    7,814

    Default

    That isn't the case.






    I really have no idea, but you said you wanted to hear it. By the sounds of it, it dosn't look to good?

  6. #6
    Veteran v-tec's Avatar
    Join Date
    Dec 2008
    Name
    Grant
    State
    QLD
    Location
    Gold Coast
    Country
    Australia
    Posts
    2,373

    Default

    Nah doesnt sound too special, had a chat to 4a guru old man Josh and he reckons bearings. Gona take the sump off one night and he's gona come check it out for me, sucks either way but fingers crossed its just the bearings and nothing else too major.
    http://img530.imageshack.us/img530/731/43367425735d6c87ce7bo.jpg

  7. #7

    Default

    is the oil sparkly? as in shavings of metal in the oil

  8. #8
    Senior Member --Redwork--'s Avatar
    Join Date
    Jan 2009
    Name
    Jason
    State
    QLD
    Location
    Nundah
    Country
    Australia
    Posts
    954

    Default

    If you have the head off.
    Turn the engine so the pistons are half way down the bore then rotate then crank back and forth.
    You should be able the feel the lack of bearing which has no don't been shreaded to oblivion..
    It'll make a nice clunk feeling when you change direction and turn the crank in the opposite way...
    Other than a totally stuffed bearing (most likely) is tha you have a nicely bent rod...
    Which would you rather..??

    If its a rod then you just gotta get a rod..
    It is a bearing there's a good chance you'll need a rod or at least get all your rods resized. And its almost enevitable that you'll will have to get a crank grind.. Possibly even a new crank depending how bad it is...

  9. #9
    Senior Member Anthony's Avatar
    Join Date
    Nov 2008
    Name
    Anthony
    State
    QLD
    Location
    Brisbane
    Country
    Australia
    Posts
    831

    Default

    That sounds terminal Grant, sorry to say. If it was bearings then 4 would presumably be the same height or 2mm higher at bottom dead centre. If thats not the case Id say it's likely a rod thats been hydraulic locked and bent.
    Last edited by Anthony; 10th March 2009 at 12:10 AM. Reason: clarification

  10. #10
    Veteran shift_rook's Avatar
    Join Date
    Dec 2008
    Name
    Chris
    State
    VIC
    Location
    SE Burbs
    Country
    Australia
    Posts
    4,719

    Default

    yeah can't be much better than either a slipped bearing or a screwed rod, in my auto class we had this happen, but was cyl number 2 and it actually stuck out like 2 mm over the top every few rotations. we decided to put it back together how it was and blow it up, good fun

Page 1 of 2 1 2 LastLast

Similar Threads

  1. 4agze bottom end, 7afe bottom end other stuff
    By FORDISGAY in forum Car Parts For Sale
    Replies: 15
    Last Post: 20th November 2012, 04:34 PM
  2. 4age bottom end
    By nburr20 in forum Cars or Parts Wanted
    Replies: 3
    Last Post: 1st October 2012, 08:46 PM
  3. 7age bottom end
    By DR86TY in forum Technical - Questions
    Replies: 18
    Last Post: 25th June 2009, 07:40 PM
  4. 4agze bottom end
    By Sprinter_Seth in forum Car Parts For Sale
    Replies: 4
    Last Post: 28th December 2007, 08:29 PM
  5. 7AFE bottom end
    By Mattysshop in forum Car Parts For Sale
    Replies: 2
    Last Post: 11th March 2007, 10:22 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •