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Old 09-21-2010, 10:11 PM   #15
Dr. Sprock
Dr. Sprock will become famous soon enough
Join Date: Sep 2010
Posts: 120
Default Re: Tensioner rattle is back -- even with new AC Delco tensioner and belt!

drilling a steel bolt out of an aluminum housing can be a pain.

don't even mention stainless or i will puke.

what you do if you have room is,

1) file the burr off the broken bolt,

2) center punch the bolt, this will be a small ping, but it helps,

3) use a 1/8 inch drill and try to keep it centered, use tape on bit for depth,

4) after the pilot hole is done, chase the rest out with a 3/16 inch bit

5) re tap for bigger threads if possible, or just chase old threads if you did not mess them up,


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