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displaying posts 1 to 7 of 7
| Author | Subject: Head Tightening |
 Dab4318
Newbie  Location: Hereford Registered: 18 Oct 2020 Posts: 6 Status: Offline |
Post #1
Hi all. Yesterday I put the head back on engine and I tightened the bolts 35nm 70nm followed by 160 degrees and I am a bit concerned as all I have read is how people have struggled to do them up and worried about the bolts snapping. Well I genuinely didn’t think it was that difficult and am now worried they aren’t tight enough. Anyone have any way of checking? Cheers Dan |
 Posted 24th Jan 2021 at 20:56
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hovis16
Seasoned Pro  Location: Reading/parts for sale Registered: 21 Nov 2008 Posts: 4,304 Status: Offline |
Post #2
From memory is it not 3 tighten stages then 160 degrees? Depends on how big your bar is, the longer the easier it will be________________________________________ Ph2 Black GTI 6!EX black 6 owner But now a Black caged rallye owner Hunting for Go faster bits! SEARCH click here |
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Posted 26th Jan 2021 at 18:38
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Dab4318
Newbie Location: Hereford Registered: 18 Oct 2020 Posts: 6 Status: Offline |
Post #3
Is it not 35nm, 70nm, and then 160 degrees? I was using a half inch Teng torque wrench. So not overly long. |
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Posted 26th Jan 2021 at 20:36
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #4
We could always do this the easy way and use the ‘Common torque settings’ FAQ..... Torque settings________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!!  |
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Posted 26th Jan 2021 at 22:05
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Dab4318
Newbie Location: Hereford Registered: 18 Oct 2020 Posts: 6 Status: Offline |
Post #5
jeffers wrote: We could always do this the easy way and use the ‘Common torque settings’ FAQ..... Torque settings That doesn’t help me with my initial concerns though? |
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Posted 27th Jan 2021 at 20:45
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jeffers
Forum Admin Location: Leeds Registered: 14 Dec 2003 Posts: 3,702 Status: Offline |
Post #6
Dab4318 wrote: jeffers wrote: We could always do this the easy way and use the ‘Common torque settings’ FAQ..... Torque settings That doesn’t help me with my initial concerns though? They’re stretch bolts, as long as you follow the guidance I don’t know what more you want? I’m not aware of a specific torque setting. I’ve always used the attached guide and it’s not let me down. My advice is follow the known guidance and don’t panic, being a stretch bolt I have found in the past they don’t feel the same as a non stretch bolt when tightened think it’s just one of them things, I’m happy to be proved wrong but as said I’ve used the above guide and not had an issue. ________________________________________ Team Running Engine again!Team Negative Camber! My Budget track engine build thread! Now appearing at a Trackday near you!! |
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Posted 27th Jan 2021 at 23:19
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S8-Tom
Regular  Location: Chichester Registered: 02 Feb 2018 Posts: 344 Status: Offline |
Post #7
Dab4318 wrote: Hi all. Yesterday I put the head back on engine and I tightened the bolts 35nm 70nm followed by 160 degrees and I am a bit concerned as all I have read is how people have struggled to do them up and worried about the bolts snapping. Well I genuinely didn’t think it was that difficult and am now worried they aren’t tight enough. Anyone have any way of checking? Cheers Dan I think originally the specs were 35nm, 70nm then 180degs but this was revised to the 160degs final angle tighten (and what the data in the FAQ says). There's no way of checking so you can either tighten everything a further 20 degrees or stick with what you've got. I'd be relying on what the FAQ says, the information there is from Autodata and there must be hundreds if not thousands of head bolts that have been tightened down to those specs. ________________________________________ 1343Z4 coolant hose o-rings for sale198131 injector o-rings for sale |
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Posted 28th Jan 2021 at 09:14
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