Head Gaskets??

[JMIV]

Well fellas, I think they r done. No known EGR problems, deltas never get more than 9*(192 ECT 201 EOT on freeway 75 MPH). I had gotten a little puking during summer but only once and didnt think much of it. But this past week I'm starting to here the dreaded "tea kettle" whistle. havent pulled the EGR valve yet but with my deltas I'm assuming the worst. Thinking about going with the Sinister kit with OEM gaskets, anybody chime in with thoughts? Also, I have to drive this thing five hours to the Sault tomorrow, I have no choice, am I going to murder this thing worse? Thanks guys, and grateful for the the org, otherwise I wouldnt have a clue whats going on...... for better or for worse I guess.

[RRF985]

Try replacing the degas cap. They can go bad. Cheap fix if it works.

[deesle]

Change the cap at a minimum, pressure test the coolant system if you can. You already know there is an issue so it might be a risk. If you are going to go keep an eye on the coolant and temps like a hawk..

OEM head gaskets are what I am doing. For the egr delete I went with IPR Gen 2 after Tuscany recommended it (I had a sinister clone sitting in the box even).

[JMIV]

I just dont understand, and I guess its a little denial as well. But from my experience w motors, when the head gaskets go, you know about it. Normally w a ton of white smoke and major loss of coolant. I have none of these and she runs like a top. Just that damn whistle! When I get back Thursday gonna pull the egr valve and see if there is any moisture in there.Will also try the Cap too. Thanks guys.

[SharkDiver]

Your gaskets can have such a small leak that it only allows cylinder psi to enter the coolant but not big enough to allow much coolant back into the cylinder. I had to add coolant 1 time a month or so. My trk was the same way, The temps were all good but my coolant system was always running at 16psi.
You need to take your egr valve off and have a look and test your deags psi like deesle said. As for your trip just try to keep your boost under 10psi or so and keep your coolant level at the updated Min mark.

[WarChild]

The whistle could be a cracked exhaust y pipe.

Sent from my SPH-L710 using AutoGuide.Com Free App

[JMIV]

Well, on my trip to the Sault she started consuming coolant. Now getting whte smoke on startup. So today she got dropped off for studs and the whole nine yards. Get her back on Thursday. Sucks, but its cheaper than a new 6.7, plus the guys at the shop I took it to said this is nothing compared to the cost of working on those. So be it. I guess I just got my membership to the ARP stud club!

[JMIV]

Thought I would just give a little update. The cab is off and all the new goodies are going on tomorrow! Interesting side noote, my mechanic asked me if I had been into this before? No I replied. He said i had only one bolt holding the turbo, the glow plug harness was wasted, and the scary part is that the high pressure oil "log" on top of the head on the passenger side was missing two bolts! The beauty of buying used I guess! But when she gets back she'll be all better. Really glad now that I'm doing the head job, I drive 40 to 50k a year so I want this thing to be right.

[Tuscany]

Just make sure your mechanic sends the heads out to a KNOWLEDGABLE machine shop and when I say knowledgable I mean on the 6.0 head not knowledgable on 350 small block heads.