reuse torque-to-yield head bolts?

Can I reuse them? A new set's a bit expensive. Any tips on checking them out such as measuring the length? Or, just buck up and buy a Fel-Pro set?

Thanks,
Kurt

 

I didn't know what those were and had to look it up....
http://www.canadiandriver.com/articles/jk/040303.htm

From what I'm seeing - and it makes perfect sense.... torque-to-yield bolts stretch to the appropriate torque value. They shouldn't be used again because they're already stretched and won't give you the proper torque the second time around.