Removing head studs, some easy, some not
 

I started pulling the old lower dilavar head studs the other day and thought, hay this is easy. The first 5 came out with no problem or heat. They were tight and took a bunch of torque but spun out with no drama.
The 6th (on that same side, passenger side) required about 4 minutes of propane heat and then came out fairly easy.

Then........I went to the other side (#1,2, and 3). None of em budged, I eventually got one out with 15 minutes of propane heat. I'm goingh to take it to work and use Oxy-acetalyne to get the last 5.
Question:
Why would the studs on one side come so easy and the studs on the other side come so hard? Maybe they let the loctite sit for a while during initial assembly? This engine has never been apart since it left the factory.

I just removed all my head studs this weekend and found similar results. The toughest ones showed the most loctite residue. In fact, the toughest one was the last one. With a Snap On stud removal tool and an impact gun, it still took a couple of minutes (no heat used).

donot be scared to scare them with your favorit big torch/ oxy and propane or acctyl. and and ox. as you need to cycle them a couple times with your favorit flavor off pentrate oil.

I went after the remaining 5 studs today, 10 minutes later they were all out with no damage. Heat is good :)
Now it's all about cleanup, inspection (most of that is already done) and waiting for my latest pelican order to arrive (piston rings and a bunch of small items). No way I'm gonna be done in time for the GAF so I can take my time and do it right.

it is amazing how many peo will try this w.o heat.....heat is a good thing nuts and bolts just start jumpin off when they see that big bad torch come after them.....then in an other thread on an other forum I recomended heat and someone jumped in and said don't do it as it will swell the bolt/stud up and will never come out:eek:
Ohhh well advise is free ,,just have to sort thrue it

I agree with you. You need heat to break down the red Loctite.
-Chris