Tuesday 23 April 2013

Stripped exhaust stud hole

Fwd stud on #2 cylinder will not hold torque. I did notice the hole having the first few threads stripped, but left it alone, thinking it wouldn't pose a problem...... Wrong. This definitely would have been a piece of cake to drill, tap, and install a timesert when the head was off.
Having no room for a drill and not owning an angle drill really complicates things. Access is limited, and the engine is also slanted. A 1/4 drive wrench with a 12 point 9/32 socket was used to drive the drill, counterbore, and tap.
The hole is prepared and cleaned.
Timesert installation finally complete. It can be done, but it's a bit of a challenge.
Note, the number 2 stamped on the block, under the aft exhaust stud hole. It stands for piston tolerance group 2. 0 and 1 would be the other options.

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