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I'm looking at eather o ringing my head or fire rings, whats the difference? are fire rings easier to do? Or is dropping off your head at the machine shop and getting o rings better?
i can't tell which is easier but these should help these are from ats diesel performance, the link is at the bottom of the page.
O-rings The next step up from head studs is O-ringing the engines cylinder head. Once we receive your cylinder head we perform 2 machining processes on it. First off we deck the surface of head so that it's flat. Next a groove is cut around each combustion chamber for the O-ring to be placed. With the heads installed the O-ring squeezes against a stock head gasket to hold the pressure in. An engine equipped with O-rings can contain boost pressures up to 70psi.
Fire-rings For those who want the mother of all pressure containment then our fire-rings are for you. The machining process for the fire-rings is similar to that of the o-rings. The difference is how they seal. The fire-rings utilize a head gasket that is laser-cut to fit around them. The rings seal against the deck of the block instead of the gasket. These fire-rings and handle everything from your average tow rigs to a vicious sled puller. http://www.atsdiesel.com/ATSWebsite/...EngineHead.asp
Best way to do fire rings is to pull the block. I would need a dang good reason to go to that extent. O-Rings are good upwards of 90psi of boost. Whatcha planning on doing
Ok I guess I'm just going to O ring this motor, I didn't for shure know that fire rings required the block to be machined, I though it was just the gasket,
Well now I am curious, according to the ATS description above, and they have forgotten more about this stuff than I will ever know.
I thought O-Ring involced cutting rings into the head where the copper gaasket is placed, then crushed against the flat block. And that the fire ring involved cutting rings into both the head and block. Perhpas I am mistaken??
I went and did some quick reading.....
Stainless rings, not copper. And you do have to cut both the head and block for fire rings.
Be carefull with who you have do either, if the head is not milled flat and the rings are not in the correct alignment, out of round, and/or have varying depths you will have troubles. I was reading well into the early days on this so I'm sure the knowledge of the process has come a long way. However I would only trust a shop that does this type of work on our trucks, not just anybody with the machining equipment....
IT all depends on what kind of condition the hg/head are in. Ive seen them blow on stock trucks. Im currently running 45psi on the stocker ... and its holding ... I just dont know for how long. Will be doing head work soon.
Trapper ... I just spoke with Doug ... Im glad everything worked out. Your head went out today, and he said that you recieved your charger. Industrial was screwing him around with the shipping
__________________ Michael Charlton - Keystone Diesel
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