CharlesElliott Posted September 28, 2007 Share Posted September 28, 2007 What's the required torque for spark plugs? Charles --- My SuperGraduates 2006 diary My SuperGraduates 2005 diary, My Caterham Academy 2004 build and race diary Link to comment Share on other sites More sharing options...
Johnty Lyons Posted September 28, 2007 Share Posted September 28, 2007 T not FT 😬 jj N.I. L7C AR 🙆🏻 Membership No.3927. Link to comment Share on other sites More sharing options...
mav Posted September 28, 2007 Share Posted September 28, 2007 Not aware there is one. I do them up to hand tight + 1/3 turn. Never let me down yet... Link to comment Share on other sites More sharing options...
Johnty Lyons Posted September 28, 2007 Share Posted September 28, 2007 I meaqn to say FFS hands up how many people use a Torque Wrench on their Spark Plugs Please tell me I'm not alone on this one jj N.I. L7C AR 🙆🏻 Membership No.3927. Link to comment Share on other sites More sharing options...
mav Posted September 28, 2007 Share Posted September 28, 2007 JJ you are not alone. I've not heard of anyone using that implement on sparking plugs... Link to comment Share on other sites More sharing options...
CharlesElliott Posted September 28, 2007 Author Share Posted September 28, 2007 I haven't to date but thought I might try to inject some good engineering practice 😬 Charles --- My SuperGraduates 2006 diary My SuperGraduates 2005 diary, My Caterham Academy 2004 build and race diary Link to comment Share on other sites More sharing options...
mav Posted September 28, 2007 Share Posted September 28, 2007 the offical answer is 18ft/lb or 25nm Edited by - mav on 28 Sep 2007 20:51:47 Link to comment Share on other sites More sharing options...
Johnty Lyons Posted September 28, 2007 Share Posted September 28, 2007 Oh come on Charles give us a break Just think Every single nut and bolt on our cars has a recommended Torque BUT If we where to use the T Wrench on every one we'd never be done Just imagine a High St garage where every mechanic used GOOD ENGINEERING PRACTICE and Torqued every bolt Imagine the Time and the Cost 😬 jj N.I. L7C AR 🙆🏻 Membership No.3927. Link to comment Share on other sites More sharing options...
rj Posted September 28, 2007 Share Posted September 28, 2007 Johnty, I (usually) do ! Provided you know the torque of the bolt you're about to tighten, how much longer does it take to use a torque wrench (OK mine are Stahlwille which are very easy & fast to adjust) over a similar non-torque ? /r Link to comment Share on other sites More sharing options...
TopQ1967 Posted September 28, 2007 Share Posted September 28, 2007 I always use a torque wrench and mark the bolts that are set at the given rating. I use a torque wrench for the spark plugs as well because I am afraid to damage the head. Q. Link to comment Share on other sites More sharing options...
martinwhitcher Posted September 28, 2007 Share Posted September 28, 2007 umm........FFS 😬 hand tight Martin MW 51 CAT Superlight No.171 now known as:Superlight DVA 250 Link to comment Share on other sites More sharing options...
Mick Day Posted September 29, 2007 Share Posted September 29, 2007 here & here for chapter & verse. Link to comment Share on other sites More sharing options...
Dartmoor7 Posted October 2, 2007 Share Posted October 2, 2007 >>imagine a High St garage where every mechanic used GOOD ENGINEERING >>PRACTICE and Torqued every bolt Might be a good idea if they did. When I used to have my cars serviced at garages there were two occasions within five years when the plugs were left too loose with resulting inconvenience. MY BLAT-O-METER 2007: 64 (to 27th September) 2006: 89 2005: 91 2004: 64 2003: 66 2002: 66 2001: 79 2000: 32 (divorce!) 1999: NRA Link to comment Share on other sites More sharing options...
CharlesElliott Posted October 2, 2007 Author Share Posted October 2, 2007 You'll all be glad to know that I torqued them to 25Nm, which was pretty equivalent to hand tight plus half a turn. Charles --- My SuperGraduates 2006 diary My SuperGraduates 2005 diary, My Caterham Academy 2004 build and race diary Link to comment Share on other sites More sharing options...
Alex Wong1697456877 Posted October 2, 2007 Share Posted October 2, 2007 It's not a bad idea. The biggest issue I have is with the length of hand tools. Hand tight with a 6" rachet spanner is a mile from hand tight with a 10" breaker bar. Everybody should have a favourite rachet that they get used to. Who here has never stripped a thread? I love using torque wrenches when you can. It takes the element of doubt out of the equation. Having said that, I usually do mine up by feel...... I also have a few helicoil kits which I've become quite proficient at using though........ Link to comment Share on other sites More sharing options...
Jason Plato Posted October 2, 2007 Share Posted October 2, 2007 good practice would be to tighten to crush the copper washer then undo 1/2 turn and finally tighten to the correct torque (or Humm..tight) Jonty I thought you were in the repair business ? here is C7 TOP Taffia rear gunner Link to comment Share on other sites More sharing options...
MAK Posted October 2, 2007 Share Posted October 2, 2007 I always thought it was Strip the threads and then back half a turn 😬 Link to comment Share on other sites More sharing options...
Johnty Lyons Posted October 2, 2007 Share Posted October 2, 2007 I run a workshop at work and also work at home 90% of my torquing is done as most mechanics of my age do with my elbow 😬 thats not to say I don't use a wrench I do I have three [very expensive ones] But I don't Torque spark plugs EVER and to my knowledge have never had a problem as a result 😶🌫️ jj N.I. L7C AR 🙆🏻 Membership No.3927. Link to comment Share on other sites More sharing options...
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