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The day I figured out I was torquing head bolts wrong for 10 years
Was doing a rebuild on an old Cummins ISX last month and my buddy watched me set the torque wrench, then asked why I wasn't doing the angle torque in stages. Turned out I had been skipping the 90-degree step on the final pass for like a hundred heads.
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julia_carter701mo ago
Those bolts stretch way more than you'd think without that final 90 degree turn.
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laura_black3125d ago
Wait, did your torque wrench get calibrated after dropping it on a concrete floor? I've seen those things drift way off and start clicking way too early.
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reesemiller1mo ago
Hogwash. I've been building big block Fords for 20 years and never did the final 90 degree step on head bolts. My 460s held up fine at 600 horsepower. The torque wrench click is all the stretch you need. That extra turn is just a rookie safety net for guys who don't know how to read a torque spec.
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