Head gasket help

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Joined
Jun 21, 2010
Threads
45
Messages
399
Location
Cary, NC
I am replacing the head gasket on my 62 for the second time in 8k miles and want to do it right this time. I used a Felpro gasket last time and did not re-torque the head bolts. I don't know if that's what made it fail or if there is a bigger issue. Here's what i know:

1.Leak down test had no leaks on #4, 5, or 6, but definitely #2. I stopped there.
2.Compression numbers are all over the place (see pic), but wet compression numbers are not significantly higher, so I don't think it's the rings. Cylinder walls still have great looking hash marks without any unwanted scoring.
3. Plugs 4, 5, & 6 are all white and the bottom of the valves are as well. See pic
4. Plugs 1, 2 & 3 are dark and cruddy with #2 definitely having coolant on it.
5. Until a day or so before pulling the head apart, i was having no power issues, but i was running hot and had no leaks, so i knew that the gasket was going/ gone.

Questions:
1. Is there a significant difference between Felpro and OEM gaskets?
2. If the head was just decked 8k miles ago, is it likely to need it again?
3. I've seen posts about tapping the galley plug. Is this needed on the 3fe?
4. What else should i do to it while i have it apart. My vac hoses and coolant lines are all relatively new.
5. Am i missing anything that the pics are showing?

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ForumRunner_20120822_111852.webp
ForumRunner_20120822_111914.webp
 
Yes, the oil galley plug is on our 3FE FJ62 motors. It's between cylinders 5 and 6? Definitely take the time to drill, tap, and plug that puppy.
 
I have noticed once the head comes off and goes to the machine shop the oil galley plug is closer to failure. Trust me it is way easier to do it now than when it is in the truck. I would take it to the machine shop and make sure it is flat. Then i would take a straight edge to the top of the block also.

Last but not least, go OEM on the headgasket, or do it again soon.

Once you get it back together do the same tests again.
 
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