43 lb/ft according to the book. That's for an S, it's what I use.
Some Oz 1098s with bolts are supposed to have them at 50 lb/ft but these days the old bolts break.. I will never use another headbolt..
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| head torque setting? https://www.ausmini.com/forums/viewtopic.php?f=2&t=10229 |
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| Author: | aaron [ Wed Aug 17, 2005 8:58 pm ] |
| Post subject: | head torque setting? |
So what should it be for an 1100s 1275? I bet some of you know where this is going..... Cheers Aaron |
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| Author: | drmini in aust [ Wed Aug 17, 2005 9:09 pm ] |
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43 lb/ft according to the book. That's for an S, it's what I use. Some Oz 1098s with bolts are supposed to have them at 50 lb/ft but these days the old bolts break.. I will never use another headbolt..
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| Author: | aaron [ Wed Aug 17, 2005 9:13 pm ] |
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Interesting as i have a dozen manuals and some say 42, 54, 65....... 42 is what i did and it leaked still. Graham russell gave it a skim and the head is now flat but i still have the same issue with 42ft/lbs.... So i tightened to 54ft/lbs and it seems not to leak.... I am so confused! 
Cheers Aaron |
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| Author: | drmini in aust [ Wed Aug 17, 2005 9:16 pm ] |
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Check your torque wrench calibration.. some are miles out! 
yeah you are right it's 42, not 43.. dunno where you got the others though! |
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| Author: | aaron [ Wed Aug 17, 2005 9:17 pm ] |
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How do i do that? Cheers Aaron |
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| Author: | drmini in aust [ Wed Aug 17, 2005 9:21 pm ] |
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I have an old dial one here I use to check my Kinchrome `clicky' one against. As it's just a simple beam in bending, I think it's fairly predictable. Bring yours over sometime and I'll compare it. 
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| Author: | J_A_M [ Wed Aug 17, 2005 9:21 pm ] |
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thanks for the reminder Aaron....I need to retorque mine. What happens if you over tighten head bolts? What's right for a 998 / 1098? Good to see you are sorted now Aaron. |
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| Author: | drmini in aust [ Wed Aug 17, 2005 9:24 pm ] |
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J_A_M wrote: thanks for the reminder Aaron....I need to retorque mine.
What happens if you over tighten head bolts? What's right for a 998 / 1098? Good to see you are sorted now Aaron. The book says 40 lb/ft if you have nuts & studs.. like yours.
I loosen each one 1/8 turn then tighten, move to next one and repeat. Follow tightening sequence in book. Middle one outwards. Good idea to recheck rocker clearances afterwards. |
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