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Old 12-17-2014, 05:08 AM   #1
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Default Need help removing broken woodruff key

i am currently in the process of disassembling a motor and have noticed that the woodruff key is broken. Can anyone give me advice on the best way to extract it? I have tried to chisel it with a flathead and hammer, and also tried prying(lightly) on the the gear itself. Also, note the irregularity on the thrust side of the keyway. its rounded off. Should i be worried about the replacement pin not being able to slide in securely? is the damage major enough to warrant tig welding repair or a new crankshaft?

thanks in advance for the advice, removing this key is one of the last things i need to get this block ready for machine work!



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Last edited by epileptic; 12-17-2014 at 05:51 AM.
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Old 12-17-2014, 05:16 AM   #2
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Can you get a gear puller on the... gear?
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Old 12-17-2014, 06:57 AM   #3
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The keyway needs to be repaired, so pop that gear off. Have a shop weld and grind the keyway square, or it won't hold the new key right.
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Old 12-17-2014, 10:24 AM   #4
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Yep, use a gear puller to get the crank gear off then you can repair it properly.
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Old 12-17-2014, 12:31 PM   #5
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I can't imagine attempting to repair that when good, un-fucked cranks are $50.
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Old 12-17-2014, 02:10 PM   #6
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What Sav said. Junk it for a good crank and sprocket.
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Old 12-17-2014, 06:29 PM   #7
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I can't imagine attempting to repair that when good, un-fucked cranks are $50.
please tell where these good cranks can be found.
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Old 12-17-2014, 10:43 PM   #8
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I found mine in the bay of E.
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Old 12-18-2014, 04:28 AM   #9
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I found mine in the bay of E.
i will keep a lookout on the auctions! turns out a friend of mine may sell me extra shortblock for a decent price. awaiting confirmation of the condition on the crank before i proceed with the purchase though. hopefully i can get this build going soon. i replaced the timing belt on my current motor approximately 4,000 miles and noticed a little bit of play on the original crankshaft
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Old 12-18-2014, 10:03 AM   #10
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Call one of the parts places. Partsgroup probably has a pile of them.
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Old 12-18-2014, 01:07 PM   #11
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Call one of the parts places. Partsgroup probably has a pile of them.
Do they break down short blocks? The used Miata part "recyclers" I've talked to mostly want to sell complete bottom ends.

--Ian
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Old 12-18-2014, 02:25 PM   #12
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No idea, but it's worth a call. Hell, if it's cheap enough, just buy a short block and toss it in.
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