I wish ringing the head was the end all be all with CAT head gasket issues but it sure wasn't for me. 25k later and two separate 3-4 weeks worth of downtime and mine is STILL pushing coolant. It was done by a reputable shop too.
Rutts machine shop in Elizabethtown PA rings heads with a good lead time. Make sure you use the same brand gasket they use to make the cuts so everything lines up when it all get bolted down.
Performance 3406E head gasket solution ??
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by caterpillar4811, Feb 6, 2018.
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Ok, I’ve never o-ringed a head yet so no experience there.
I do know that when I torque a Cat head down, I do the steps that Cat put down.
(This is the 1987 Pete with the 425hp 3406b. )
Then I wait a day.
The next day, all the bolts stayed at 330 ft/lbs except 5 of them on the exhaust side by #4 and #5 cylinder.
I re-torque all of them and leave for a day again.
Next day, 2 of them were loose.
Re-torqued again and wait.
Finally all of them stayed at 330 ft/lbs.
No head gasket failures yet and the injection pump was adjusted for power.
I did the same for the BXS ACERT engine as well. The head bolts needed re-torquing only once, then stayed at 330 ft/lbs. The bolts were loose in the same spot around the #4 and 5 cylinder.
Now this is a recently rebuilt engine with 18:1 compression pistons with the VVA turned off. So there is high cylinder pressures. Engine is custom tuned and pushes a lot of boost pressures.
Somewhere around 55 to 60 psi of boost according to the dash gauge.ProfessionalNoticer Thanks this. -
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Shawn2130 Thanks this.
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My 2ws should be 800 hp ish. Has 55s / marine cam / ringed aftermarket head .. I do not mistreat it, but am not "nice and easy" with it up hills
I'm going on 200k miles with the protrusion set at .006 all the way around. I was told 5 to 7 on anything... and the higher the better, to a point, on a performance build
Also how far do you lug it down when climbing? Cylinder pressures and heat build up are pretty incredible at lower rpmShawn2130 and ProfessionalNoticer Thank this. -
I'm changing out the compressor soon too. It's definitely pushing something into the system. Lots of bubbles while connected but they are reduced significantly once the discharge line is disconnected. Also, once the tanks are 100 percent drained there's only like one bubble every second coming through.
The compressor head does get coolant from the engine via the water jacket connections on the block. So even though the air outlet is disconnected, there's still a sharing of coolant happening. The shop that did the work is reputable so I'm trying hard not to point fingers at this point.
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