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Head bolt torque...

VAG-Slag Feb 22, 2014

  1. VAG-Slag

    VAG-Slag Registered User

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    Just finished putting the Auuuuuds back together :yahoo:finally! . . So pleased to have her back after almost three months :laugh:

    When I torqued up the head bolts I swear auto-data said 40nm, 90deg + 90deg... Now I'm home I've noticed a bit of paper that came with the head kit that says 40nm, 60nm, 90 + 90.

    Car's driving fine, just wondering if this is anything I should be worrying about or am I good to go for a proper drive tomo!? :racer:

    Lewis
     
    Prawn likes this.
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  3. s3dave

    s3dave TFSI Hybrid Supporter

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    40nm + 90 + 90 is correct
     
  4. VAG-Slag

    VAG-Slag Registered User

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    Ahhhhh, schhhhweet. Thanks for confirming that Dave. . . Feck knows what that bit of paper was on about then!?

    Looking forward to a long over due drive tomo :racer:
     
  5. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    Its 40nm, 60nm then 90 deg plus 90 deg...

    Sequence is
    [​IMG]

    But.... go round twice on the torque stage so 40nm, 40nm then 60nm, 60nm before doing the final 90 deg + 90 deg else the bolts won't be at the correct torque before doing the angles...

    You will find the middle bolts can almost go another 1/4 turn after the first pass at 40nm

    <tuffty/>
     
  6. VAG-Slag

    VAG-Slag Registered User

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    shiza :huh:

    Well it's done now @ 40, 90, 90... No going back really unless I take em out and put new bolts in I suppose?
     
  7. s3dave

    s3dave TFSI Hybrid Supporter

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    From The Bentleys Manual...

    BENTLY1.8T HEADTORQUE.jpg

    dry or wet install?
     
  8. IbizaAlex

    IbizaAlex Registered User

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    40nm, 60nm, 90 Deg then 90 deg. Exactly how tuffty says. Do it any other way and you will compromise longevity.
     
  9. Broken Byzan

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    All of this is assuming OEM bolts were used.

    If Elring or similar used then follow their instructions which are 40/60/ 90 90 as stated.

    I'd much rather slowly walk the head down that oik it down straight away, and tbh the tightness will , or should, end up the same as the stretching process is still strting from 60 NM
     
    Last edited: Feb 22, 2014
  10. VAG-Slag

    VAG-Slag Registered User

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    Thanks for your input guys... Obviously a fair bit discrepancy in opinion there.

    I think I'll leave it as it is for the mo. Longevity shouldn't be too much of an issue for me, if all goes to plan she'll be my weekend car soon and if she's VERY lucky I'd imagine the head will be coming off for pistons/rods at some point :eyebrows:

    Although I may decide to whip the bolts out and re-torque some new ones in at a later date, we'll see...

    Thanks again gents!
     
  11. s3dave

    s3dave TFSI Hybrid Supporter

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    There seems to be controversy over wet installed i.e if the bolts are lubed up or go in dry as that will effect the 90 + 90
    dont forget from 40 to 60 on a torque wrench will be about 5mm and unless using an angle gauge the 90+90 will be very subjective??
     
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  13. Broken Byzan

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    Always install wet for consistant friction .Also always use an angle gauge imho. We make sure the actual tension is very similar after its had the 90s using a facom angle /torque device. It's the only way to make the head consistently tightened.
     
    s3dave likes this.
  14. superkarl

    superkarl MAN OF STEEL

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    I used arp bolt lube under the heads of my bolts.
    Can't remember what I did mine to now....rushing off to my thread to see what I did. Paranoid now
     
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  15. coatesy

    coatesy poking badgers with spoons

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    im sure your finger tight will be fine :icon_thumright:
     
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  16. himself26

    himself26 Registered User

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    So is Correct ?
    Wet bolts first stage 40nm leave 5mins then 60nm leave for 10mins then add 1/4 turn (90d) Then let settle for say 30mins before a Final 1/4 turn ?
     
  17. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator

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    Go round twice at 40nm, twice at 60nm then 90 + 90... No need for settling time just send it... Bolts go in dry... No lube

    <tuffty/>
     
  18. himself26

    himself26 Registered User

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    Cheer's <tuffty/>
     

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