25 Nm (Newton-meters) is a unit of torque that measures the rotational force applied at a distance of one meter from the axis of rotation. It indicates the amount of twisting force that can be exerted, which is crucial in applications like tightening bolts or turning screws. A higher torque value means more force is applied, making it easier to rotate or move an object. In practical terms, 25 Nm is often used in automotive and mechanical contexts to specify the required tightness for various components.
Crankcase mounting bolts: Upper Case 10Nm, Lower Case 25Nm
25nm then 3 x 60 degrees
intake nut 89lb .in stud 106.lb.in plenum is 25nm
corsa 1,3ie,nv or sv motor,head settings 25nm @ 60deg + 60 deg + 60 deg
25nm on all 4 bolts 1, 2 , 3 , 4 then 90 degrees and 90 degrees
For this one you'll need a torque wrench and an angle gauge. Hope you are familiar with these. The values are 25Nm+600+600+600. These are from General Motors workshop manuals so I trust them 101%. G.Ikenye
Astra F stage 1. 25Nm stage 2. + 60 degrees Stage 3. + 60 degrees Stage 4. + 60 degrees.
Using new head bolts & lubing the threads tighten to 25Nm then a further 90 degrees+ another 90+ another 90+ 45 degrees.
Mains stage 1. 35Nm stage 2. 70Nm Big Ends stage 1. 25Nm stage 2. 50Nm.
New head bolts must be used Stage1. 25Nm Stage2. +90 degrees Stage3. +90 degrees Stage4. +90 degrees.
Big end 1, 25nm 2, 100 + 15 deg Main 1, 44nm 2, 88nm :)
Torque depends on the size of the bolt as you have already specified grade 8.8. Here are some recommended settings: M8 (13mm across the flat head) 25Nm M10 (17mm across the flat head) 49Nm M16 (24mm across the flat head) 210Nm