budtoh3zo
Full Access Member
2003 6.0L hasent had over 28 PSI of boost and its puking coolant, 60,000 KM on the clock. What do u guys think?
Head Gasket?
- Thread starter budtoh3zo
- Start date
stock boost is supposed to be 22-25 psi WOT 3rd gear. 28 for stock is on the high side but they are all a little different. Puking coolant could be from the degas bottle to full ,or your head gaskets are lifting under the pressure.
budtoh3zo
Full Access Member
The bottle is under low now by about 1/4 of a inch, if its lifting does it screw the head gasket? thanks
I think what happens on some are the head bolts stretch slightly allowing a minute gap. Maybe they weren't torqued properly. Another thing to ponder is that at 25 psi is almost 2 atmospheres of pressure. Try to hold your thumb over an air hose with 3 psi in it and you won't be able to hold it back. I'm not sure what they do to fix the problem.
budtoh3zo
Full Access Member
They said to me they are putting thicker head gaskets it? dont know if it would help
DaveBen
SDD Senior Member
A thicker gasket might help if it is a gasket problem, but I read it as a head clamping problem. The only fix it to re-engineer the head bolts (add more) on the 6.0.
Dave
Dave
budtoh3zo
Full Access Member
i head that to also another solution i heard about is use head studs
DaveBen
SDD Senior Member
That is about a $700 solution that we should not need to do. That is why I don't ever run "power enhassment products" or chips. They increase the power and the resulting increases in cylinder pressure causes the head to lift and leak.
Dave
Dave
The other option is a lock ring headgasket or an O-ringed gasket...
You realise that 28 PSI on a 25 PSI system is only 12% over. That's not much. I would wonder about the bolt torque, and or manufacturing tolerance, and how carefully it was installed.
Have they checked the coolant for exhaust byproducts? Soot, acid, or fuel/oil contamination? That would really say whether or not it's a gasket or head bolt leak. You read about other guys running 40 PSI of boost and they haven't gone BOOM yet. Something just doesn't gel.
You realise that 28 PSI on a 25 PSI system is only 12% over. That's not much. I would wonder about the bolt torque, and or manufacturing tolerance, and how carefully it was installed.
Have they checked the coolant for exhaust byproducts? Soot, acid, or fuel/oil contamination? That would really say whether or not it's a gasket or head bolt leak. You read about other guys running 40 PSI of boost and they haven't gone BOOM yet. Something just doesn't gel.
budtoh3zo
Full Access Member
coolant is clean, i have always been running it on the safe side. I have had the EGT's up to 1200 so i wonder if its the EGR cooler and its boiling it and pressurizing it and blowing it out that way?