more bolts

The problem seems to be that the new head bolts were not the proper grade. The shop manual calls for 95 ft-lb of torque on the head bolts, which corresponds to a Grade 8 bolt. The bolts that I bought (from LMC Truck, I think) do not have the Grade 8 markings on their heads. Which is why they broke. Dammit. This only applies to the longer bolts with the big heads -- the ones with the smaller heads are okay.

So, I bought some 1/2-13 x 5" Grade 8 bolts (actually "hex cap screws") from Tacoma Screw, along with some 1/8" washers since the new bolts are a bit longer than the old ones. I cleaned 'em up with a shop towel on the threads and installed them each with two 1/8" washers and a dab of anti-sieze, cranking them kinda tight with a 1/2" drive ratchet.

I had to remove the rocker arm assembly to get to all of the head bolts, so I'll most likely need to re-set the valve clearances later.

I skipped installing into #9 until I get out the broken bolt. Also noted #11 bolt had yielded. Should pull out the pushrods for better access when torquing them down to avoid using an extension.