Hello, I have two questions on TTY bolts that I haven't been able to find an answer to.
1. Why are TTY bolts used in the first place? I know the simple answer is "because they provide more clamping force than a standard bolt of the same size", but why would that be? I understand why angle tightening is more precise than torquing, but with all else being equal (torque, thread pitch, length, etc) I don't understand why a TTY bolt would provide more clamping force than a bolt that is of a high enough grade to not stretch past its yield point under the same torque. My understanding is clamping force is a function of If someone could explain that one to me I would really appreciate it.
2. Is any downside to replacing TTY bolts with ARP high strength bolts or studs other than cost? When I take the head off of one of my cars I like to replace the stock TTY bolts with ARP studs because they are more convenient to use (in my opinion) and can be reused if I ever need to remove the head in the future and this strategy seems to have worked well for me so far and I am wondering if this is a bad practice for some reason I am not aware of since ARP studs don't stretch past their yield point at the proper torque.
Thanks in advance as always!
1. Why are TTY bolts used in the first place? I know the simple answer is "because they provide more clamping force than a standard bolt of the same size", but why would that be? I understand why angle tightening is more precise than torquing, but with all else being equal (torque, thread pitch, length, etc) I don't understand why a TTY bolt would provide more clamping force than a bolt that is of a high enough grade to not stretch past its yield point under the same torque. My understanding is clamping force is a function of If someone could explain that one to me I would really appreciate it.
2. Is any downside to replacing TTY bolts with ARP high strength bolts or studs other than cost? When I take the head off of one of my cars I like to replace the stock TTY bolts with ARP studs because they are more convenient to use (in my opinion) and can be reused if I ever need to remove the head in the future and this strategy seems to have worked well for me so far and I am wondering if this is a bad practice for some reason I am not aware of since ARP studs don't stretch past their yield point at the proper torque.
Thanks in advance as always!