I thought I bought a new one, but I can't find it anywhere. I did a quick search and didn't find anything, but is it okay to reuse the crank bolt that holds the balancer on? If it makes any difference I'm running the SoCal Super Damper, not the stock balancer. Thanks for any help guys.
Can the crank bolt be reused?
- Thread starter JoshH
- Start date
I have reused them but it is not wise. They are "stretch to yield" bolts and lose their tension. No problems yet, but I'll kick myself if I lose a race for a $10 bolt.
Normally any bolt that tightens "in degrees" is a stretch to yield. You tighten it to take up the slack in FTLB, then go X degrees more to stretch the bolt.
Million dollar question then: can ANY bolt be "stretch to yield" or does this require a special bolt??
Reason i ask is i once sheared a balancer bolt out the end of a 327. it was a grade 8, 1/2" bolt i picked up from a specialty fastener store. just curious if the reason it sheared was because it was the wrong type of bolt, maybe one not designed to stretch.....?
thanks
Reason i ask is i once sheared a balancer bolt out the end of a 327. it was a grade 8, 1/2" bolt i picked up from a specialty fastener store. just curious if the reason it sheared was because it was the wrong type of bolt, maybe one not designed to stretch.....?
thanks
Stretch to yield bolts are a special alloy and heat treat similiar to spring steel. They are designed to stay tight even if the "load height" shrinks over time. Head bolts are a classic example. If the heating and cooling make the gasket crush a little more, the stretch in the bolt will keep the tension high.
sounds like that was my problem then. wrong type of bolt. thanks for the reply. sorry to threadjack you, josh.
