I am building another engine using ARP Headstuds with athena cutring headgasket. I followed the directions on the instructions that ARP provided. I used the provided lube as instructed and I torqued according to the instructions. The M50 block is cleaned and inspected for flatness, and the head was resurfaced. and Yes, the bolt holes were cleaned, and I used a thread chaser to make sure it is really clean, I can run a bolt with my hand through it without any interruptions, and I made sure no liquids was left inside prior to assembly. As I was torqueing, the first and second stages went fine until the last stage when I was reaching 85lbs. Four of the bolts did read 85lbs but feels slightly rubbery and not a solid stop like the others? It feels like the nut can't go any further. I did loosen up one of the nut and took out the stud to look down the hole for any debris, and it was clean. I then cleaned the stud, washer, and the nut and reassemble and it's doing the exact same thing.
I bought this engine a few years ago from a known running car. The outside of the block looks really good, that is why I decided to use this block. I am thinking that i might have an internal crack in the bolt holes? Let me know what you guys think, especially those that have more experiences with a build like this. I do have 2 more blocks sitting in my garage that I can use if this block is bad.
Thanks!!!
I bought this engine a few years ago from a known running car. The outside of the block looks really good, that is why I decided to use this block. I am thinking that i might have an internal crack in the bolt holes? Let me know what you guys think, especially those that have more experiences with a build like this. I do have 2 more blocks sitting in my garage that I can use if this block is bad.
Thanks!!!
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