|
By dennis22 - 7 Years Ago
|
Hi guys,
Just curious, is this what a typical stretched head bolt looks like?
Was torquing my head bolts an this one wouldn’t clamp down.
|
|
By miker - 7 Years Ago
|
|
Can’t speak to “head bolt stretch”, but I just had a friend by with years of fastener experience in aircraft. His response was a heat treat problem, and that you were lucky it distorted that far before it snapped. How long since you had your torque wrench certified?
|
|
By dennis22 - 7 Years Ago
|
|
I haven’t had my torque wrench calibrated yet, i haven’t used it that much since new. However it is in Newton meters, so I think 75ft lbs = 101nm, it did seem bloody tight!
|
|
By charliemccraney - 7 Years Ago
|
|
Some of the factory bolts are pretty weak right from the start. If they are all from the same source, it will be wise to replace all of them.
|