kmetiuk
15+ Year Contributor
- 521
- 126
- Mar 10, 2010
-
Edmonton,
AB, Canada
Do you have a pic of the thread Chasers that broke? I'm curious what the fracture looks like in case I ever run into the same issue.
I've never run a thread chaser before, personally I use an old head bolt and cut "flutes" into it and then I just running in and out in and out in and out cleaning out those flutes each time. Blast some solvent in there with a vaccum line in the bottom to suck up any crud. Works well for me but it sounds like your threads were throughly caked with shiiit.
As an aside, it's funny after all the posturing and smack talk none of us advice-givers got the issue correct.
It is interesting that you torqued em too spec and it lifted enough to let exhaust out/coolant in.... I wonder if b/c you only had 50% (or whatver) of the threads engaged that they somehow stretched enough to cause issues. At 34 PSI it wouldn't take much to cause problems.
Glad you found the issue though.
I've never run a thread chaser before, personally I use an old head bolt and cut "flutes" into it and then I just running in and out in and out in and out cleaning out those flutes each time. Blast some solvent in there with a vaccum line in the bottom to suck up any crud. Works well for me but it sounds like your threads were throughly caked with shiiit.
As an aside, it's funny after all the posturing and smack talk none of us advice-givers got the issue correct.

It is interesting that you torqued em too spec and it lifted enough to let exhaust out/coolant in.... I wonder if b/c you only had 50% (or whatver) of the threads engaged that they somehow stretched enough to cause issues. At 34 PSI it wouldn't take much to cause problems.
Glad you found the issue though.
.