T16 said:They DEFINATELY should.
Re using stretch bolts like that is asking for trouble and is not the proper way to do things.
The bolts are meant to be torqued up once only.
Forget tolerances, the properties of the metal change with the stretch and heating/cooling over time.
For a few quid its not worth cutting corners.
We have used them 2 or 3 times with absolutley no issues with head gaskets on a number of high performance/ race engines. Where i did work experiance the most experianced guy there says you can use em a cuple of times. However i agree with what you say aswell - this will be an ongoing debate
