Head gasket with fire rings ???

From what I gleaned from when I asked the question...

The firerings hold more pressure than anything, if machined into the head and block.

But there have been reliability issues with them; some people say expect them to fail before 50,000-100,000 miles. Some people say that if installed correctly they don't have reliability issues.

But I've also heard that firerings also tend to vibrate around and wear away the head and/ or block after 50,000 or 100,000 miles... So they gradually get looser and loose compression holding ability.

From what I gathered, firerings are best for hard-core engines that are going to have as much thrown at them until they break.

O-rings, on the other hand, don't hold quite as much pressure, but require less machine work to really install properly and will last forever.
 
Begle1 said:
From what I gleaned from when I asked the question...

The firerings hold more pressure than anything, if machined into the head and block.

But there have been reliability issues with them; some people say expect them to fail before 50,000-100,000 miles. Some people say that if installed correctly they don't have reliability issues.

But I've also heard that firerings also tend to vibrate around and wear away the head and/ or block after 50,000 or 100,000 miles... So they gradually get looser and loose compression holding ability.

From what I gathered, firerings are best for hard-core engines that are going to have as much thrown at them until they break.

O-rings, on the other hand, don't hold quite as much pressure, but require less machine work to really install properly and will last forever.
Click to expand...

Thanks man... I have heard nothing but good things about O rings so it looks like that is the best way to go for what I want to do with it.. Thanks again.. Wesley
 
Fire rings are for competition.

O-rings are for daily drivers.

An o-ring can hold 75+ pounds of boost.
 
For O-rings would you just have to machine the head or the block as well? Also, can the 12mm ARP hold the o-rings? I was looking at going fire-rings but I'll probably go whichever route saves me money in the long run.
 
O rings bite in to the fire ring on the gasket (the metal around the bore) and keep it from blowing or moving causing a failure.If the o ring protrudes to much it will cut in to the gasket weakening it and causing failure along with sealing problems by not letting the head pull down tight.
 
ride42 said:
For O-rings would you just have to machine the head or the block as well? Also, can the 12mm ARP hold the o-rings? I was looking at going fire-rings but I'll probably go whichever route saves me money in the long run.
Click to expand...

Also,
yes 12mm ARPs and orings are a tried and true combo.
 
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