When to retighten head

[rabet]

Hi all,

Quick question,
I have rebuilt my Perkins AD4.203 engine, fitted copper laminate head gasket, Torque to 75 lbs/ft
At what hours running should you retighten the head??

Rabet

 

[jimmyhouser]

Hi all,

Quick question,
I have rebuilt my Perkins AD4.203 engine, fitted copper laminate head gasket, Torque to 75 lbs/ft
At what hours running should you retighten the head??

Rabet

Sorry I'm late. It should be redone when you reach operating temperature.