![]() ![]() #3&4 are to the left of #1&2, / #5&6 are to the right of #1&2 #1 & 2 are directly in front of you and in the center of the cylinder head crossing it width wise. ![]() Looking at the head from the side, so you are looking at the full length from side to side, I will number the head bolts in this fashion. ![]() Torque the bolts down to 98.1Nm ( 72.ft lb) There should not be more than a 0.23mm (.0091 inch) or less difference or the bolt should be discarded. Then go to about 10mm before the threads end heading toward the top of the bolt. Measure the bolt using a micrometer, at the base, or within the first 13mm from the end where it threads in. This means that the shanks of the bolts must be checked to make sure they are not too thin (or the bolt has already stretched beyond limits and is prone to snap if used) and all of them are turned the same amount. What this means is that instead of torqueing the head bolts to a specific torque specification, they are torqued down to a set spec and then tightened by rotating the bolts a certain angle, like 90 degrees. SOURCE: replacement of a head gasket on 2.5 liter nissan altima 2002įrajogag: First off, be aware that these bolts are "torque to yield" bolts (streach bolts). ![]()
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