Cam dowl pin sheard at cam

[Michael C Henry]

I got through.I'm letting the 1/8" moto tool cool. I taped off the front of the engine and used two cheap diamond tiped 1/8"" ball shaped burrs to get a dimple made foe centering drill bit.Cobalt doesn't seem to faze it.4 hours with a 5/32 solid carbide bit and a Drill Doctor= 1/4".Bought two new 5/32" cobalt bits.I didn't seen any chips.a 1/8/ carbide tiped bit for safes=$12.36.That bit is not entended for the Drill Doctor but I managed to get almost through before I lost the tip completely.So I started with a carbide rotary file burr.I worked it around and went through.I tried to get a screw lodged and pull ,no movement.Now I'm cutting the broken peice into at least two main peices calasp it inward and remove the peices.I use this method on bolts and plugs at work,but i usually have a better view. The burr and moto tool are hot and need to cool.I kept removing the fileings with a magnet and a 1/8 steel probe..I wish I had a better view. Comp Cams is sending a new pin <hop is new and improved. If ths happens a gain I do not know which way I'll go off.I'll defenatly let everyone know about it.Probably take out an add in a magazine.