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Been seeing guys skip the torque wrench on intake manifold bolts
Watched a guy at my shop in Denver snap an intake bolt on a 5.4 Triton last Tuesday. Plastic manifolds warp easy if you overtorque even by 10 ft-lbs. Just use the spec, 89 inch-pounds on those Ford ones. Anyone else deal with this issue on plastic manifolds?
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rose_grant783d ago
My buddy over in Aurora tried to eyeball it on his 4.6 and ended up with a vacuum leak so bad the truck sounded like a sick goose... he had to rip the whole intake back off and replace it with a metal one. I remember him telling me the torque sequence is almost more important than the number itself on those plastic manifolds. You gotta start from the middle and work your way out in like three steps or they'll crack every time. The 5.4's are real picky about that center bolt especially.
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nancy3513d ago
See, I've got a 5.4 with a plastic intake and I just snugged it down in a circle pattern by feel, never had a single issue... been running fine for three years now.
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