1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Welcome To LandyZone!

    LandyZone is the biggest Land Rover forum on the net. We have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.

    Registering is free and easy just click here, we hope to see you on the forums soon!

What size socket to remove the 4 rocker cover bolts

Discussion in 'Land Rover Discovery' started by Bushcrusher, Sep 22, 2020.

< Previous Thread | Next Thread >
  1. Bushcrusher

    Bushcrusher Active Member

    Joined:
    May 30, 2018
    Posts:
    251
    Likes Received:
    88
    Location:
    Dorset near the sea
    Morning, I'm totally confused, I'm replacing the cylinder heads on my d1 v8i. Every thing going well till I try to remove my rocker covers! What bloody size is needed to remove the 4 little bolts on each cover.
    Well I'm trying all the sockets in my tool chest a discovery not one fits aghhhhhhh.
    So please anyone know what size is needed or special tool I don't know but I'm ready to chuck my tools out my pram.
    Hope your all safe and well
     
  2. kevstar

    kevstar Well-Known Member

    Joined:
    Sep 25, 2013
    Posts:
    5,661
    Likes Received:
    7,559
    Location:
    In the next Glen
    Are they not 10mm & you need a muilt hex socket not a 6 sided socket.
     
  3. Bushcrusher

    Bushcrusher Active Member

    Joined:
    May 30, 2018
    Posts:
    251
    Likes Received:
    88
    Location:
    Dorset near the sea
    Morning kevstar, . I will try them in the next half hour. Thanks for reply. Let's hope I can get the damage things off. Hope your safe and well buddy
     
  4. Bushcrusher

    Bushcrusher Active Member

    Joined:
    May 30, 2018
    Posts:
    251
    Likes Received:
    88
    Location:
    Dorset near the sea
    Chuffing looks like previous owner has rounded them aghhhhh. The things I've worked on while doing her up the past 2and a half years it's always the same. The guy was a total butcher with a peanut for a brain.
     
    Stanleysteamer likes this.
  5. Stanleysteamer

    Stanleysteamer Well-Known Member

    Joined:
    Nov 22, 2013
    Posts:
    11,399
    Likes Received:
    10,180
    Location:
    East Dorset
    Feel your pain. Rocker covers never need doing up that tight if they and their gasket are put on properly.
    Bet the tw@t had a leak and was just so stupid he thought he could cure it just by doing the bolts up a bit tighter. If they are that fu cked you may need those special sockets that tighten down on anything, can't remember where I got mine, but they aren't too bad, or you will have to be brutal with the next size down maybe imperial, hammer the fu cker on then undo. ailing that it'll mean real careful buthcery with a dremel or summat to cut the heads off then get the bolts out once the rocker cover is off.
    Do hope you manage it!:(:(:(
     
  6. Stanleysteamer

    Stanleysteamer Well-Known Member

    Joined:
    Nov 22, 2013
    Posts:
    11,399
    Likes Received:
    10,180
    Location:
    East Dorset
    Just noticed you from the same county as us. We are in France at the mo but the South east corner of Dorset when in the UK. If you was near I could lend you those sockets! Shame we aren't for a while!
     
  7. discool

    discool Well-Known Member

    Joined:
    Apr 25, 2007
    Posts:
    12,439
    Likes Received:
    1,309
    Location:
    Sector 12 in Kent, The Garden of England
    Your not familiar with a V8 rocker cover and the recessed screws are u, :(cut heads off with a Dremel:D
     

    Attached Files:

  8. Stanleysteamer

    Stanleysteamer Well-Known Member

    Joined:
    Nov 22, 2013
    Posts:
    11,399
    Likes Received:
    10,180
    Location:
    East Dorset
    You're right I am not that familiar with my V8 D1 having not had to do much to it since I bought it!
    Anyway, my other advice seems to have been given before
    See this
    https://www.aulro.com/afvb/discovery-1-a/211026-rocker-cover-bolts.html

    and this
    https://www.aulro.com/afvb/discovery-1-a/74939-removing-rocker-cover-bolt-d1-v8.html

    And this, closer to home!
    https://www.landyzone.co.uk/land-rover/v8-rocker-cover-bolts.47525/

    So I hope that is a bit more helpful.
    And if he still can't get them undone????????

    Buy new rocker covers and butcher the old one?


    Hope not!:eek::eek::eek::eek::eek:
     
  9. Bushcrusher

    Bushcrusher Active Member

    Joined:
    May 30, 2018
    Posts:
    251
    Likes Received:
    88
    Location:
    Dorset near the sea
    Good evening guys, well what a bloody mare that was:( .
    But the landy gods were with me and got the buggers out.
    Then came the head bolts! People should have to do a course on how to treat nuts and bolts!
    Got 19 out with some serious huffing and cursing :) but OMG the bottom row of 5 the one near fire wall on passenger side took me nearly 3 hours to undo as previous owner clearly tried and failed to undo before as it had rounded edges on most of the bolt. I really felt deflated , so had a smoke swore like a Irish navi and had everything crossed hoping I could get it out.
    Like I said took 3 hours small little movement on it every time even put some solder on the edge which helped. So it's all off , I haven't got a steam cleaned bore or piston head and liners where they should be. What I do have is a possibility of cracked head! But I sort of predicted it due to how she over heated .so I have 2 nice ones all checked ready to go.
    Would It be wise to replace push rods and hydraulic lifters while she is all opened up?
    Thank you for your help steamy and you to discool. Keep safe and well and hope to meet up off road one day
     
    Stanleysteamer likes this.
  10. Henry_b

    Henry_b SPARES OR REPAIR

    Joined:
    Jan 29, 2018
    Posts:
    11,878
    Likes Received:
    10,459
    Location:
    Hereford****e
    .................
     
  11. Henry_b

    Henry_b SPARES OR REPAIR

    Joined:
    Jan 29, 2018
    Posts:
    11,878
    Likes Received:
    10,459
    Location:
    Hereford****e
    Only replace the pushrods and lifters if you're doing a Cam..

    Never put new lifters on an old cam..

    14 bolt heads, only do the bottom row of 4 headbolts up to 25nm..
     
    Stanleysteamer likes this.
< Previous Thread | Next Thread >