5.3l heads torx

[James Fowler]

Putting head bolts in and torx setting was wrong. All the bolts on one head are not torx right and the book does not make any sense about proper torxing of bolts. Should i loosen and re-torx the bolts properly ? The book said bolts 1-10 22lb ft ,+90 ,+70 then torx bolts 11-15 at 22

[MikeNH]

Welcome to the site.

 

These bolts are likely torque to yield type and as such they cannot be re-used.

[Jsdirt]

I think he means Torque, and not TORX.

 

 

This is a Torx ... BOTTOM pic ...

[James Fowler]

What about the gasket,i just put the oneside on and still have one more to do. The setting in the book just doesnt seem right. Making last set at 182?

[Doug_Scott]

Torque to yield bolts mean that you torque to an initial lb/ft value, then tighten an additional x number of degrees. Torque to yield are a one shot bolt. The point of the additional x number of degrees is to have the bolt stretch a precise length and this stretching prevents the bolt from loosening over time and temperature changes. This length is just shy of breaking. Generally trying to use them a second time runs the risk of breaking the bolt.

 

Re-using a head gasket that has not gone through a temp cycle is generally ok. Re-using torque to yield is not ok.

[Jsdirt]

And you need one of these when installing TTY bolts - tells you the angle in degrees. The manual specs will tell you all of that info.