9400 isx ###

Have fun and plan on twice the amount of time you thought it would and if u have trouble getting bolts out unhook bats and weld a nut with washer under it to broke bolt sometimes it works and easier then drilling out usually

 

We use reverse drill bits on the broken bolts to see if they will spin out, if not we drill and Heli-coil them.

 

we've done plenty of those, take your time and you'll get them out. most times drilling and installing heli coils is the answer. I have had some luck drilling a small pilot hole 1/8-3/16 then stepping up to 1/4" with a RH bit hoping it will catch and turn the broken piece in. Another tip, the manifold bolts from cummins have a slot cut into the tip of the bolts so when your bit pokes through it's common to break your drill bits so be careful. Good luck