Reiny Posted November 29, 2012 Share Posted November 29, 2012 I have finally bought myself a torque wrench after having put it off for years on end. I have no immediate use for it but it's just a nice thing to have. The range is between 42NM and 210NM. To my horror I have just realized that the first stage of a 300tdi's cylinder head torque setting is 20Nm. Will the 2Nm difference really be detrimental? Quote Link to comment Share on other sites More sharing options...
teabag Posted November 29, 2012 Share Posted November 29, 2012 Do you know how accurate is your wrench is, is one on the newish digital types that are certifide and calibrated a requirement in most industries nowdays or is it something made in China. If not, how to you know the torque setting is what it said it is on your wrench it may be a percent or two + or - so based on that go for it. 20Nm is not that tight ,anyway my Haynes book for the 300Tdi states the 1st stage is tighten untill bolt heads just contact the head it's the 2nd stage thats 40Nm. Quote Link to comment Share on other sites More sharing options...
western Posted November 29, 2012 Share Posted November 29, 2012 from my genuine LR 300tdi workshop manual info. 300tdi head bolt torque is start 40Nm for all bolts then for M10 x 117mm long 60 degrees M12 x 100mm long 60 degrees M12 x 140mm long 60 degree & a further 20 degrees these bolts only. Quote Link to comment Share on other sites More sharing options...
Reiny Posted November 29, 2012 Author Share Posted November 29, 2012 Teabag, it's a European brand and has been individually tested, calibrated and certified. Being a sceptic, I accepted the offer of an aircraft technician friend of mine who has the facilities to test torque wrenches and he found it to accurate to within 2% Quote Link to comment Share on other sites More sharing options...
teabag Posted November 29, 2012 Share Posted November 29, 2012 Teabag, it's a European brand and has been individually tested, calibrated and certified. Being a sceptic, I accepted the offer of an aircraft technician friend of mine who has the facilities to test torque wrenches and he found it to accurate to within 2% Excellent just as it should be just short of 1Nm at 40 if it's 2% .. a bit like my Fluke multi meterwhich is certified every year at 2% + or -.... it's a shame my two torque wrenches 1/2 and a 3/8 can't be checked but then I've never had a problem after using them. It appears the Haynes book has 6 stages and the LR workshop manual has 5, missing the bit about installing the bolts Quote Link to comment Share on other sites More sharing options...
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