O ring heads?

Adamv7010 · #1 (**permalink**) 06-22-2012, 06:39 PM

I was looking through a copy of dp magazine tonight and saw liberator performances ad...

Advertise sets of o ring heads for 700+exchange for your stock heads.

Anyone ever used them?

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**windrunner408** · #2 (**permalink**) 06-22-2012, 08:16 PM

Stay away from them man. Don't even waste your time. You are just better off taking your heads to a reputable machine shop for reconditioning and getting them all checked out and then just using ARPs and torquing them down to about 245ft-lbs. This has been proven over and over to be a solid setup that is capable of holding some awesome power. I know one guy who did over 1000hp on the 6.0 with NOS and these and they held so that should say something. This was also with OEM head gaskets. I would stay away from the oring heads as I have also heard that they don't hold up well to cyclic heating up and cooling down stresses of a daily driven truck and are more for the racers.

I have also heard that liberator was really stingy about refunding the core charge and look for any reason not to. Just sayin what i have heard and not what i have experienced so please take that with a grain of salt and search it out some more to make sure I am either lying or telling the truth. Hope this helps.

Adamv7010 · #3 (**permalink**) 06-24-2012, 06:07 PM

I agree. I was just curious if anyone's uses them.

What exactly is different about them

**PGreenSVT** · #4 (**permalink**) 06-24-2012, 06:30 PM

Forget them. They are not meant for DD engines and will result in more maintenance. Just do oem head gaskets and head studs. If studs and oem head gaskets can hold all the power Shawn Ellerton throws at them they'll work for you.

If you don't know what's different about them you definitely don't need them.

Adamv7010 · #5 (**permalink**) 06-24-2012, 06:33 PM

As previously stated...not interested in buying them...

Just want to know exactly what's different vs oem

The ad didn't explain much

**PGreenSVT** · #6 (**permalink**) 06-24-2012, 09:52 PM

There is a groove cut into the head at the cylinder circumference and a wire is fit to it like a rubber o-ring which is supposed to act like a crush washer to seal the combustion chamber. Think of a normal head gasket with a wire around the cylinder instead of the silicon.