So I have my Kohler K321 that is giving me problems with the head gasket.
I blew one. Replaced it, and tested the engine out putting it under load and I blew another gasket.
I took the head off moment ago, and they blew in the same spot, and now my cylinder head is damaged. Luckily I have a donor engine, I can get a new head off of.
As you will see in the below pictures my engine block uses stud bolts.
I have a few observations that hopefully someone can help me understand:
1. When I took the head off the second time, the bolts had come loose already (I torqued them to Manual Specs). Should I be using lock washers here to prevent this?
2. Head Gasket Blew in the same spot. Does this mean anything?
3. Does this have something to do with the Stud Bolt setup on my Ford LGT tractor?
Piston, Rings, and Valves looks great. So I am unsure on why I blew the gaskets in the first place. I haven't checked the valve to tappet clearance, but they open and close tight.
I realized I made a few mistakes after reading Brian Miller's websie:
1. I didn't clean the threads up on any of the stud bolts, or bolts
2. I didn't lubricate threads with oil
Will these have such a big impact and cause me to blow another gasket?