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Topic: torquing the head bolts! (Read 487 times) |
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ro284
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I'm a YaBB newbie!
 
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torquing the head bolts!
« on: Jan 14th, 2011, 10:21am » |
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Well having looked at changing the head 2-3 -16v i am still unsure about this procedure, on the new bolt pack box, it reads, 6 stages. in sequence.
1 tighten to 18lb -25 N/m
2 tighten to 40lb-55N/m
3 slacken 90 deg. 1/4 turn,
4 tighten to 40lb 55Nm
5 Tighten 1/4 turn
6 tighten 1/4 turn
On the pdf diagram, it reads bolt no1- 21-167 (i realise this is the torque spanner size!) then 40Nm. then 55 Nm.
Could someone advise please, my concern is the total final extra 2 x 1/4 turns, surely this would take the Nm over 55 . i dont want to get it wrong as i did before, with a new head, Thanks Bob
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Bob Dorset
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martin_rowe
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I love YaBB 1G - SP1!
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Re: torquing the head bolts!
« Reply #1 on: Jan 14th, 2011, 1:14pm » |
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that all seems correct.
the torque only gives the initial bite to get the head seated & the tension equal on all bolts, after that its all degrees.
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Rally Drivers Do It Sideways
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ro284
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I'm a YaBB newbie!
Posts: 508
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Re: torquing the head bolts!
« Reply #3 on: Jan 14th, 2011, 2:44pm » |
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I wondered what that meant Tompion! Many thanks guys.
Bob
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Bob Dorset
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