mikestang63
SN Certified Technician
My engine builder also said that 90 seems low. I went off the original spec sheet from my previous engine builder, because the 1/2" studs stayed the same. Seems like ARP wants 110 ft-lbs though.
Very small amounts leaked out. Just enough to run down the block and put a few drops on the floor. This is over the course of a week. I didn't notice anything in the oil. I also stuck a tie wrap down cylinders 1 and 4 and didn't get any signs of coolant.
Think it's safe to torque the heads down to 110 lbs and hope for the best?
If you put the torque wrench on the head bolts, have they backed off from 90? I'd try it @ 110 and see if that works. Worst case you are pulling them off anyway?