Archived new +0.010 gasket O-rings/studs now I have a leak!!

[IC Smoke]

Ok I just put the head back on and pulled the truck out the other day. Today I got in a drove a couple EASY miles, turned around and parked it again and now I have coolant dripping down the front of the motor Im in the process of re-torquing the head now since this will be my first re-torque



HELP!!!



I used a Marine +0. 010 gasket, Orings and arp studs just for some info



Thanks!!

Ian

 

[Forrest Nearing]

hopefully a retorque will get it... did you have the head checked for flatness and or trued up? what kind of protrusion do you have on the o-rings? you're using studs, I'm assuming...



I prefer to let the engine idle up to full temp after the first torque, then let it cool down and re-torque before driving at all.



do 96ftlbs on the initial torque and 1st retorque and then 120 thereafter (I did 120 on my 4th actual torque, but didn't hit it with too much heat untill then. I believe I've got . 008" protrusion on the rings, and the grooves were cut on a mill, so the variance is minimal

 

[Forrest Nearing]

doesn't a marine gasket have to be modified slightly to work with a 24v?

 

[IC Smoke]

my head had a +0. 005 bow right in the middle, so it was a "arch" but I started torquing hte head in the middle and worked out im sure the 5 thou woudlnt affect it. I didnt have the head "decked"



they were 0. 050 rings with 0. 030 protrusion cut on a o-ring "jig" by Diesel Darryl Poole so I dont doubt his work.



The marine gasket did have to have some hole enlarged but they werent a issue all 5 of them I think and they werent very large either

 

[Forrest Nearing]

I'm thinking you might have your numbers wrong... . 030" protrusion is a LOT!!! and I wouldn't have done it with a smiling head. hopefully you can seal it up with some re-torques

 

[paulb]

I'm thinking you might have your numbers wrong... . 030" protrusion is a LOT!!! and I wouldn't have done it with a smiling head. hopefully you can seal it up with some re-torques

I totally agree. . 050 is big wire, and . 030 is at least 3 times to much. You'll cut the gaskets fire ring before you ever get that much to seal.



Paul

 

[dpuckett]

My head was arched about the same, and I went ahead and got it milled. I had no way to check the block, and had no way to remedy the situation if it had been out of true.



Daniel

 

[IC Smoke]

I talked with my motor man and the protrusion is 20-21 thou out of the head and 29-30thou into the block so far the studs are just torqued to the 120. I was informed to take them to 130 let idle for awhile then let cool and check again. I didnt have a way of checking the block either. Im going to get to it this weekend maybe.



Ian

 

[paulb]

I talked with my motor man and the protrusion is 20-21 thou out of the head and 29-30thou into the block so far the studs are just torqued to the 120. I was informed to take them to 130 let idle for awhile then let cool and check again. I didnt have a way of checking the block either. Im going to get to it this weekend maybe.



Ian

So he cut receiver grooves into the block? I've never seen that work out with a composite gasket. It distorts the fire ring in the head gasket to much. At this point I would do a couple of re-torques and hope...



Paul

 

[IC Smoke]

EDIT: I meant that the 20-21 will protrude from the head and mash into the gasket no grooves are cut into my block



Ian

 

[paulb]

EDIT: I meant that the 20-21 will protrude from the head and mash into the gasket no grooves are cut into my block



Ian

Okay... 20-21 is over twice what it should be. That is about normal for a copper gasket but not for a composition gasket. When to much protrusion is used on a cummins, the oring will hold the head up and the oil and water passages will not have enough clamping force to seal. Multiple re-torques will sometimes crimp the gasket's firering enough to seal the water and oil passages, but usually with that much crimp, it will cut the firering in two. The real fix is to pull the head back off and have him cut the grooves deeper so that you only have about . 008 protrusion. IMO...



Paul

 

[Jim Fulmer]

That protrution is even higher than mine! I'm at 18 thousands and always have been... ... ... . lots of bite, but you have to get it there on the torques.



Jim