Originally Posted by cappedup

Yeah, made perfect sense to me, but only me.

I mean to re-torque the bolts. From the factory to 100,000 miles. I would be interested in the torque values of the bolts after all that time.

https://en.m.wikipedia.org/wiki/Torq...yield_fastener This points out that the bolt has passed the elastic limit, and is acting 'plastically'. This doesn't sound ideal for something that is contracting and expanding.

I'm guessing TTY bolts can't be re-tightened? If it's reached its plastic limit, the next stage is to break, without applying any more force. If I understand it correctly.

But, Doc, you made perfect sense. If you've stripped the engine to the point of getting to the bolt heads, you may as well remove them, swap gaskets and carry on.

I'm still intruiged how long a factory gasket would last though, with the correct force on the head. I'm at 100+k on factory gaskets. Not prepared to swap bolts only though...