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Alright working on 88 Ford F250 460. I'm pulled timing cover off and found a bolt that had been snapped off at the block and have been trying to get it out drilled down center then took a bigger bit nd tried to center but it's off a little. And might hit threads. What would be easiest and best way. I have to they the timing cover and water pump flush of course any ideas?
You need to get the hole centered again. I don't know if you have limited access or not but you could try a smaller drill bit or router bit and try to re-center hole. It will be easier to remove with bolt extractor if hole is centered. Can you post any pics?
Weld something to the bolt and twist it out. As far as repairing the hole; I'm thinking keensert, or fill with weld and re-drill and tap. To center the hole put the timing cover back on. Insert a steel sleeve into the hole that slip fits the timing cover, and use whatever drill bit fits the sleeve. Remove the timing cover, and drill to finish dimensions. Finally thread the hole with whatever tap you need.
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