1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Removing Flywheel Nut

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Old 04-17-07, 09:34 AM
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Removing Flywheel Nut

A couple of weekends ago, I completed my first engine pull. Didn't go too bad, had to use a pair of vice grips to get some bolts off, but other than that, it went pretty smoothly. I want to rebuild the engine and do a little porting so I went to take of the flywheel. I only had sockets that went up to 2in so I had to wait until the next morning to get a 2 1/8in socket. I tried everything to keep the flywheel from turning when I turned the nut but nothing worked.

I am just wondering if you guys have any tricks for removing that flywheel nut. I don't feel like shelling out the money for a flywheel holder from Mazda or whoever sells them. Any tips would be appreciated. Thanks.
Old 04-17-07, 09:40 AM
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Chisel and hammer. be sure to grind the sharp end as it will slice the nut.
Old 04-17-07, 09:55 AM
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I want to be able to reuse the nut.
Old 04-17-07, 09:56 AM
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you can stil re-use it.
Old 04-17-07, 10:57 AM
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Try this.
https://www.rx7club.com/1st-gen-archive-71/engine-flywheel-stopper-554738/
Old 04-17-07, 11:01 AM
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My flywheel nut was all jacked up from the PO using a chisel (I guess he didnt dull the point tho cause it was messed up). I was able to grind the deformations down and got the 2 1/8 socket on. A little PB blaster and a few seconds with a impact wrench and it spun right off. The pully nut on the other side of the eccentric shaft is what gave me trouble!
Old 04-17-07, 11:08 AM
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1/2" impact ftw.
Old 04-17-07, 12:10 PM
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I use a 3/4" air impact wrench to drive the socket.
Old 04-17-07, 02:08 PM
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Originally Posted by rx7doctor
GREAT idea!!! That is exactly what I was looking for.
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