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Power Strokes
6.0 Aftermarket
are O-rings mandatory for me?
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[QUOTE="strokin6L, post: 1246928, member: 842"] No....fire ringed! My gaskets are a thick single layer graphite style gasket that doesnt have the combustion/fire ring in it like the stock MLS gasket has. Once the head gasket is placed on the block....the fire rings are then placed in the cylinder opening of the gasket on the deck surface of the block. The machined grooved cylinder head is then placed onto the rings. Once the head it placed down over the rings....the rings will obviously be seated into the grooves of the head. The big difference between o-ringing and fire ringing is where the ring is seated. In o-ringing....the ring is seated on top of the head gasket. In fire ringing....the ring is seated on or into the deck of the block. Another difference between the two is that the ring in o-ringing is tapped/pressed into the groove of the head. Where in fire ringing....the ring is placed loosely on the bare surface of the block before the cylinder head is dropped onto it. [/QUOTE]
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6.0 Aftermarket
are O-rings mandatory for me?
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