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· vw toaster!
3,290 Posts
Discussion Starter · #1 ·
i finished rebuilding a lombardini engine last night (single cyl diesel, air cooled), the torque sequence for the headbolts was;
stage 1: 30Nm
stage 2: minus 180 degree (at which point the bolts were less than hand tight)
stage 3: 20Nm
stage 4: plus 72 degrees.

come someone tell me why for each of the stages, i wonderstand why you would go in stages but why minus 180 degree's?
also why turn 72 degree's and not torque to say, 60Nm for example?

i did a transporter engine and it had similar style sequence (though much bigger torque settings!)
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