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

&%*#ing flywheel

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Old Oct 6, 2005 | 10:13 PM
  #1  
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&%*#ing flywheel

How do I get this goddamn thing off?Ive been fighting with it for the past 3 days.
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Old Oct 6, 2005 | 10:28 PM
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Thread the nut back on halfway then take a hammer and strike the very edge of the flywheel with a good whack.
Be carful not to damage the flywheel when you hit it.Maybe fix a piece of plastic to the face of the hammer before swinging it.Or use a brass,lead or deadblow hammer.
Remember,its intensity not repetition that will pop it loose.A bigger hammer will get it in one blow,whereas a small hammer may not pop it off after 100 hits.......
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Old Oct 6, 2005 | 10:30 PM
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Ok will try that how about a good rubber mallet so it is for sure a no damage hit?allso broke my snapon harmonic balancer puller so guess ima see him at work to get a new one!
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Old Oct 6, 2005 | 10:32 PM
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If its heavy enough it might work.
The "ring" that a metal hammer produces will really help though.Taper fit parts like that and ball joints usually require a more solid hit than a rubber hammer can provide.
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Old Oct 6, 2005 | 10:34 PM
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From: Inkerman, On, South of Ottawa, the 2nd coldest Capital in the World
See this link. Another guy in this section has the same problem, and has had lots of suggestions.

https://www.rx7club.com/1st-generation-specific-1979-1985-18/front-pulley-help-468740/

Seems best bet is to heat it up to melt the loctite on the bolt. Also you must prin the engine so it can't turn over.
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Old Oct 6, 2005 | 10:46 PM
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Im talking the fliywheel its self not the nut
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Old Oct 6, 2005 | 10:48 PM
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put the nut on most of the way, except DON'T hit the flywheel, hit the nut. I've done this several times. Normall comes off in the first 2 hits.
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Old Oct 6, 2005 | 10:54 PM
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nut??? use a heavy rubber mallet and whack the flywheel. As steve said, the nut will save your toes. I never had any problem with flywheels since I work out everyday....heineken time
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Old Oct 6, 2005 | 11:14 PM
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Heat the flywheel with a propane torch or oxy fuel setup, and cool the e-shaft with some ice. Squirt some WD-40 or other penetrant in there when you get the flywheel warm and the e-shaft cool. Then whack it with a hammer. Works like a champ (usually) for me.

PS - I dont put loctite on that **** when I put 'em back together. 400 ft/lbs needs no loctite, IMO.
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Old Oct 6, 2005 | 11:25 PM
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My problem was that I kept trying to hit the flywheel OFF of the eccentric shaft... I tried for over an hour with a hammer and a block of wood, trying to back it off.... after a frustration break... I went back down and decided I'd try hitting it on the face, as in back toward the motor. This was with a normal hammer, and it came off on the first hit. I felt like a huge jackass... every flywheel I've taken off since has come off on the first or second hit if I hit it INTO the engine.
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Old Oct 6, 2005 | 11:48 PM
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You do the same thing Mike Incas author of "Mazda Rx-7 Performance Handbook" said Mazda did with this Problem, hire King Kong for a day to torque and untorque it
But seriously, try attaching a longer pipe to the Breaker bar and having a buddy help you pull it.
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Old Oct 7, 2005 | 12:05 AM
  #12  
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Got it off with a block of wood and a hammer took 3hits.Thanks for the ideas guys.
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Old Oct 7, 2005 | 07:15 AM
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Originally Posted by christaylor
Heat the flywheel with a propane torch or oxy fuel setup, and cool the e-shaft with some ice. Squirt some WD-40 or other penetrant in there when you get the flywheel warm and the e-shaft cool. Then whack it with a hammer. Works like a champ (usually) for me.

PS - I dont put loctite on that **** when I put 'em back together. 400 ft/lbs needs no loctite, IMO.

I collected several lock washers from the older motors. So my motors have it plus blue lock-tite.
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Old Oct 7, 2005 | 02:39 PM
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whack it like you hate it with a dead blow hammer from harbor freight. 5 lb hammer, 10 seconds, two seperate engine flywheels pop off. Also quite a release if I may so say.
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Old Oct 7, 2005 | 03:29 PM
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I'd guess that loctite would just be a nuisance in this application. I don't know anyone who's had a flywheel come loose.

B
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Old Oct 7, 2005 | 05:15 PM
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I have a puller that I modified to fit our flywheels. The secret is not to try and take the flywheel off with the puller, but to put tension on it. Once it is tensioned, a mild hit with a hammer will usually pop them. I've even had them pop while I walk over to pick up the hammer. Now that is a comforting sound when your back is turned.
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