Thread: What are the Odds? Stripped a bolt in the head before a trip this Friday!!

Originally Posted by justinc

Don't fret, they were probably stretched/ broken to begin with, you did nothing wrong. A common Td5 trait I'm afraid. Make certain they machine the manifold as it WILL be slightly warped. The next studs will then stretch/ break. I drill out to 5/16" ( or 8.5mm) then tap to 10X1.5 , using M10 studs for the front 2 and rear 2. Not had any issues after this.

JC

I know you know much more than I in these matters, but I can't help thinking with a torque value of 25 NM/ 18 lb ft , it would be very easy to stress the manifold bolts, especially if not tightened in the right sequence. Do you think it possible? Bob

Originally Posted by 1999td5

Hi Bob

When you check the torque of the nuts, do you just torque it up, or do you back the nut off first?

Back off, torque to torque value. Bob