6.7 Headgasket

[TwinTurboTim]

Any advantage to running a cometic head gasket or just stick with a stocker? The head is O ringed.

 

[Poulina]

both work well, many would recommend fire ringing

 

[TwinTurboTim]

i have heard that Fire rings are not reliable on the long haul.

 

[Marq92]

Round groove gives the best shot of longevity from what I've heard. If you can get the block done too even better but not needed. Getting it crushed fully from retorques is everything. If you drive pressures are in check though (kept at same or less than boost at WOT) then you'd be fine with good studs until you need to worry about the block holding up.

 

[Poulina]

i have heard that Fire rings are not reliable on the long haul.

Okay you know best