Difference between fire ring and o ring?

A local tractor guy told me the ring the block and not the head because the block doesnt warp and if the head does warp some youll have to have it cut for orings again.
 
Has anyone ran dual o rings? one in the head and one in the block on a slightly different diameter?

Anyone heard of a fire ring that dont require grooves to be cut?

Adam
 
any one know how people are cutting the rigs in the head? like what type of tooling they are using? when i pull my head i'm going to machine it myself just wondering what type of grove people are cutting. is it square at the bottom like its been cut w an endmill or cutter? or round at the bottom cut w like a ball end mill to fit the shape of the round wire?
 
Forrest Nearing said:
sounds custom to me :confused:
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what i meant forrest was that the gasket is nothing more than a cummins gasket with the crush ring cut out. it is not custom, it is modified. it not like somebody is making these gaskets without the crush ring at all, then i would consider it to be custom.

Wes
 
SWALLDOG said:
so where is the line between modified and custom?
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That's subjective.

BHJ makes tooling to do O-rings, but it is cost prohibitive for someone to buy it with the intentions to just do one or two heads. I'm not sure if anybody else makes tooling to do it or not.



Has anybody tried running a copper head gasket with an o-ringed block?
 
BYIron---I do--back in '01 or '02 I did a .041 set of o-rings in the block and head & offset them using the BHJ tool--the following year(lifted head, cuz I had a copper HGasket) I cut the one groove in the block to fit a .051 o-ring and left the the head groove at .041 and I cut a receiver groove opposite of each---used a copper gasket and some yamabond 6b coated on head, block and each side of gasket and even over the orings and it's been there to date--I've hit 85+ psi many times with this set up---you need to be quick with setting the head back on because the yamabond 6b sets up in about 4-5 minutes, so having extra hands is a must--we (HVAC, willyslover and a friend & myself) set the head on and torqued the head bolts to like 50ft lbs then removed them one at time and installed studs in their place---chris
 
cool thanks. I was thinking of running .051 in the block and the head with about .012 protrusion and ofset them a little. Run this with a .020 gasket. Wonder how it will work for a deticated 2.8 puller?
 
about 30k on my firerings (machined in head by Hallas Performance), DD 75+psi,standard 12mm arp's at 165 ft.lbs. so far so good. thats with a 35/3b, now we'll see how it'll do with a 64/80 setup.

Joe
 
there's definite math to figure out protrusion, bit size to use and depth of cut--also for the receiver groove--although we didn't have the exact size that the math told us to use for one receiver groove it's worked---I don't recall the exact math cuz it's been to long ago, but I've got it filed away somewhere---really though someone should have the calcs on here--I posted all this stuff yrs ago on TDR I think----good luck....chris
 
csutton7 said:
there's definite math to figure out protrusion, bit size to use and depth of cut--also for the receiver groove--although we didn't have the exact size that the math told us to use for one receiver groove it's worked---I don't recall the exact math cuz it's been to long ago, but I've got it filed away somewhere---really though someone should have the calcs on here--I posted all this stuff yrs ago on TDR I think----good luck....chris
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Nice to see you back Chris :Cheer:

BBD
 
SWALLDOG said:
any one know how people are cutting the rigs in the head? like what type of tooling they are using? when i pull my head i'm going to machine it myself just wondering what type of grove people are cutting. is it square at the bottom like its been cut w an endmill or cutter? or round at the bottom cut w like a ball end mill to fit the shape of the round wire?
Click to expand...

Also wondering what type of cutter to use! Thanks!!!

Cody
 
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