leowin

Trying to fix an oil leak on my 90 vert and broke the rear valve cover bolt. Now the fun begins trying to get this out arghhh

85 Stalker

D-oh!

Do you have a Craftsman bolt extractor, my luck with them is around 50/50. Is there enough exposed thread to cut a notch?

leowin

No thread at all exposed that would be too easy. Gonna try and drill a hole then use an extractor. Wish me luck lord knows i need it. LOL

PatternDayTrader

Plan on drilling and retapping.
Use a shop vac while your drilling to capture the metal shavings. Have someone hold if you cant find a way to sort of wedge it against something so it will hold itself in the proper position.

85 Stalker

Another trick is lob some grease or Vaseline around the stem when you drill, that will help catch the shards. Too bad you cannot use your Dremel to cut a slot on the stem and use a a large standard screwdriver to back it out.

Since your trusted shop is so close, you could always put the cover back on and simply place some duct tape over the hole to prevent oil blowing out. This is what I could do.

thurman_merman

Left handed drill bits. Punch in the center, start small and step up drastically in size. Usually zips it right out. If you drill into the aluminum use a pick to remove the piece of bolt that's left and put in a helicoil. That method has worked for me for years. As mentioned, grease on the drill or a shop vac is a good idea.

Tom400CFI

None of the above; they all produce mixed results...and when they don't work, you're left with a bit of a mess.

Weld on the end of the broken off bolt. Weld up a little "pile", then drop a nut over the pile...weld the bejeezus out of the pile, blending it into the ID of the nut. Quick, before the heat put into the bolt cools, get a socket/ratchet wrench on there and spin her out. Works every time, with minimal consequences.


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leowin

Update... Surgery was a success broken bolt removed and all is good until i break the next thing lol

Tom400CFI

Sweet when the easy out works!