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Thread: Head bolts - I think I might have goofed !

  1. #1
    Join Date
    Aug 2004
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    Regional NSW, Australia
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    Default Head bolts - I think I might have goofed !

    Put the repaired & reconditioned head back on last night using new Torx-head bolts instead of the original hex bolts.

    Tightened everything according to Bentley.

    This morning I was reading Bentley again and noticed the word "washers" .

    Should I have taken the washers from the old bolts and used them with the Torx-head bolts. The new head bolts look like a bolt head & washer together and didn't come with washers.

    Thought I had better check now before I reassemble everything else.

    Does it matter ?

    Do I need to start again ?


    "I'm not the village idiot.
    But when he retires I'm next on the list."

  2. #2
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    Default

    If it does the same job, I would't see why it would make a difference.

  3. #3
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    Dec 2003
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    Australia
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    Default

    According to the etk an m20 525i should have a torx head bolt and a separate washer

  4. #4
    Join Date
    Jan 2004
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    4,150

    Default I would put the washers on , and follow this revised

    torque sequence that they posted with the new bolts. Here



    Quote Originally Posted by Zeuk in Oz
    Put the repaired & reconditioned head back on last night using new Torx-head bolts instead of the original hex bolts.

    Tightened everything according to Bentley.

    This morning I was reading Bentley again and noticed the word "washers" .

    Should I have taken the washers from the old bolts and used them with the Torx-head bolts. The new head bolts look like a bolt head & washer together and didn't come with washers.

    Thought I had better check now before I reassemble everything else.

    Does it matter ?

    Do I need to start again ?


  5. #5
    Join Date
    Aug 2004
    Location
    Regional NSW, Australia
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    Default

    Thanks again everyone for your assistance- just goes to show that the ability to do stupid things never stops !
    I am a little annoyed, however, that they were not supplied with the new bolts - that would have made everything crystal clear.
    I presume that I now need a new head gasket and new bolts plus new rocker cover gasket - oh well I live & learn !
    By the way Bill R, thanks for the new tightening protocol, however that is the one I used as that is also what Bentley recommended.
    At least I can say that when I instal the new bolts it will be the second time I have put a BMW head back on !


    "I'm not the village idiot.
    But when he retires I'm next on the list."

  6. #6
    Join Date
    Jan 2004
    Location
    Thunder Bay, Ontario
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    Default

    Zeuk, I just did the same job on an M50 head and most of the washers stayed 'put' on the head through the process.

    To get this straight, were the original head bolts installed without washers? The new set of head bolts I used arrived without washers, but I used the existing washers for the insall.

    Anyhow, hope you figure it out,

    Dave M

    10/90 Build 525im, 630,000+km, Eibach/Sachs, Engine Rebuild
    *RIP Oskar the DOG *

  7. #7
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    Default

    Quote Originally Posted by Dave M
    Zeuk, I just did the same job on an M50 head and most of the washers stayed 'put' on the head through the process.

    To get this straight, were the original head bolts installed without washers? The new set of head bolts I used arrived without washers, but I used the existing washers for the insall.

    Anyhow, hope you figure it out,

    Dave M
    Mine is an early M20 motor from which the head had never been removed. These early motors came with hex head bolts and washers.

    I ordered a set of new head bolts - torx and they were supplied without washers. What confused me was that they look a little like a bolt head with a washer and so I used these without the washers from the hex bolts.

    Obviously this was wrong and I now need to remove and re-instal the head.

    My stupidity and lack of experience !

    I wonder if the village idiot has died or retired and I am about to be inducted soon ?


    "I'm not the village idiot.
    But when he retires I'm next on the list."

  8. #8
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    near Portsmouth, England
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    Default

    Is it not possible to remove each bolt, put the washer on and replce the bolt one at a time, like the procedure for broken bolts mentioned in BillR's bulletin?

    All the best

    Bob

  9. #9
    Join Date
    Jun 2004
    Location
    Melbourne, Australia
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    Default

    Quote Originally Posted by BobHarris
    Is it not possible to remove each bolt, put the washer on and replce the bolt one at a time, like the procedure for broken bolts mentioned in BillR's bulletin?

    All the best

    Bob
    That's I would have thought. One bolt at a time.

    1990 E34 535iA, 215,000kms (130,000 miles).
    Dual Climate, Rear Headrests, Rollerblind, M-Tech Wheel,
    Memory Seats, EAT Chip, T-Stars.

  10. #10
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    Quote Originally Posted by pundit
    That's I would have thought. One bolt at a time.
    Possibly, but given that I have to buy new bolts anyway, for the cost of a new head gasket I might as well do it properly.
    I haven't done any more to the car since I bolted on the head, so have not much to lose as far as time or effort is concerned.

    "Experience makes us wiser but not necessarily richer" - old Swedish saying.


    "I'm not the village idiot.
    But when he retires I'm next on the list."

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