Head bolts dealer quick fire question

Discussion in 'AMG Lounge' started by C63wannabe, Jul 25, 2016.

  1. C63wannabe

    C63wannabe Member

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    Hi all had a few low coolant alerts so took the car into mb full warranty so wanted to check it out. They stripped down the engine to check bolts arent snapped can i ask them to replace them for new ones? And do i request new gaskets? How much are the bolts? Cheers
     
  2. Lee C63

    Lee C63 Hardcore MB Enthusiast

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    If they replace one bolt with OEM style bolts then the head has to come off.....so by default they will have to replace gaskets.

    Only way you can do "one at a time" is if you install ARP studs.....However, I doubt MB would give you that option.
     
  3. C36fan

    C36fan Hardcore MB Enthusiast

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    Neither should be replaced 1 at time ,and always new gaskets needed.
     
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  4. grober

    grober MB Club Veteran

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    Many cylinder head bolts are of the "stretch" variety meaning they are once only use anyway . I believe early C63 M156 engines had cylinder head bolt problems up to engine number ending ---60658
    c63 head bolt issues? - Mercedes-Benz Owners' Forums

    Hopefully you won't get charged if the car is under warranty and this is known fault??
     
  5. Alex

    Alex Hardcore MB Enthusiast

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    Got to agree with C36fan on this one. M113K bolts are tightened and removed in snail shell fashion, I imagine M156 would be the same?

    C!
     
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  6. Lee C63

    Lee C63 Hardcore MB Enthusiast

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    Agree it would be strange to change one at a time.....However, plenty have done it (including me) and no problems......

    However if it's a warranty job then get the heads odd and probably get the upgraded valve buckets at same time.
     
  7. OP
    OP
    C63wannabe

    C63wannabe Member

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    Just been told there investigating at the minute and have take the rocker covers off to check bolts ive asked them if that requires new gaskets And they said no think there fobbing me off
     
  8. grober

    grober MB Club Veteran

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    Renewing the cylinder head gasket/s using new bolts is going to be very expensive if you are paying for it. There are many reasons why you could be losing coolant radiator leak, defective water pump, thermostat expansion tank cap etc etc most of which will be considerably cheaper than renewing the CHG's and these should be explored first if there is no clear evidence of CHG or bolt failure.
     
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  9. OP
    OP
    C63wannabe

    C63wannabe Member

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    Mb warranty so not ****d lol just want it done right
     
  10. developer

    developer MB Club Veteran

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    I had the my bolts replaced on my previous M156, whilst the cam tensioners were being replaced under warranty.

    It cost me £1200 in 2014,
     
    Last edited: Jul 27, 2016
  11. MC63CLK

    MC63CLK Hardcore MB Enthusiast

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    I'm having mine replaced next month purely as a precautionary measure .
    Has anyone found evidence of corrosion once removed ?
     
  12. Lee C63

    Lee C63 Hardcore MB Enthusiast

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    Jimmy (E63) had quite severe corrosion on his.

    Mine had some mild corrosion on head of bolt.....I put a thread up when I did mine so pictures etc showing corrosion
     
  13. grober

    grober MB Club Veteran

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    A PICCY
    [​IMG]
     
  14. Milo78

    Milo78 New Member

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    Hi,

    Does anyone know what the cost is to replace the gaskets and bolts using ARP for the bolts?

    Cheers,

    Milo.
     
  15. Lee C63

    Lee C63 Hardcore MB Enthusiast

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    The Weistec ARP studs are 1000 dollars so add labour to that.....depends on which way you go either heads completely off or one at a time.

    Where abouts are you?
     
  16. OP
    OP
    C63wannabe

    C63wannabe Member

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    Just been told the dealers pressure tested it and tightened the bolts! Sounds like bs to me there pressure testing it in the morning then there handing it back sounds like incompitant idiots feeding me crap what would u guys do?
     
  17. MC63CLK

    MC63CLK Hardcore MB Enthusiast

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    Ok I see thanks for the pic I'm no expert but I don't like the look of them.
    Looking forward to see what condition mine are in.
     
  18. Lee C63

    Lee C63 Hardcore MB Enthusiast

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    Would not be accepting that the head bolts have been tightened.
    I may be wrong but I was under impression they were a stretch type bolt so basically single use.

    To get at the bolts the camshafts have to come out, seems odd they would strip down the engine and "tighten" bolts......did they say some were loose or just "torque checked" them?

    Is there another MB dealer nearby?

    What year is the car?
     
    Last edited: Jul 30, 2016
  19. OP
    OP
    C63wannabe

    C63wannabe Member

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    Hi mate there words were tightened and pressure checked hot and cold. I know i said that when i asked them about this they said they were checked and as none were broken there was nothing in warranty terms that they could do so frustrating
     
  20. Milo78

    Milo78 New Member

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    Hi Lee,

    I'm in London. How many hours labour would you estimate?

    Thanks for getting back to me.

    Milo.
     

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