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Re-tension heads?

Discussion in 'T3 & T4 Tech Help Clinic' started by BackintheDak, May 27, 2018.

  1. BackintheDak

    BackintheDak Member

    Messages:
    52
    Location:
    Tasmania
    My T3 has the 2ltr air cooled EFI motor. It has a oil leak that I think I have traced to where the head seats onto the barrel.
    I am wondering if anyone has re-tensioned the heads whilst the motor is in place and if this caused any problems.
    There is probably something more serious that head tension but I am wondering if it is worth a try.

    I cannot see anywhere else it may be coming from, I have replaced the push rod tube seals and rocker cover gaskets, I put the vehicle up on ramps, removed the lower heat shields and when running I can see what looks like movement or tiny little bubbles in the oil sitting between the head and barrel.

    Is it worth trying?
     
  2. nils

    nils Well-Known Member

    Messages:
    1,523
    Location:
    newcastle
    I've done it before on a 1600 air cooler, was loosing compression when cold.

    Gave them all a tweek with the torque wrench and good as gold.
     
    David H likes this.
  3. BackintheDak

    BackintheDak Member

    Messages:
    52
    Location:
    Tasmania
    Cheers for that, I will give it a go!
     
  4. Syncro27

    Syncro27 Well-Known Member

    Messages:
    6,651
    Location:
    Terrigal, NSW Central Coast
    Check your valves after doing any head tightening. Be careful with how much you tighten them - those studs can break and are near impossible to get out.
     
  5. cbus

    cbus Well-Known Member

    Messages:
    13,570
    Location:
    sunshine coast
    Recon its likely possible in the '3'.
    Have considered it myself for same issue.
    A cursory look at what tinware has to come off makes it appear do-able pretty easily in situ.

    Considered cleaning the join area with electrical cleaner , blowing out well and adding a bit of Curil before retightening.?
    Probably un- necessary.
     
  6. BackintheDak

    BackintheDak Member

    Messages:
    52
    Location:
    Tasmania
    Do you think I should back the studs off a smidge before tensioning?
     
  7. Syncro27

    Syncro27 Well-Known Member

    Messages:
    6,651
    Location:
    Terrigal, NSW Central Coast
    Wouldn't hurt.
     
  8. Syncro27

    Syncro27 Well-Known Member

    Messages:
    6,651
    Location:
    Terrigal, NSW Central Coast
    Doing the valves in a T3 is a good idea as they do alter their timing as they age and after head tightening they should be adjusted to suit (when the engine is cold).
     

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