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

Dissasembling a 12a

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Old 10-01-07, 06:30 PM
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Dissasembling a 12a

I've got a spare 12a with 140 XXX= kms on it. It's sitting beside my driveway with a tarp over it. I cranked it over by hand the first day I got it home, and water came out of the exhaust ports cause the previous owners didn't do a good enough job of covering it. But I din't buy it for the engine, I wanted the tranny and Weber carb / Rb header that was on it.

I guess I'll have to keep the engine, no one around me would want to buy an old rotary that doesn't run.

Should I disassemble it and store it in boxes?

Do I need any special tools to take it apart, or it it just simple nuts and bolts.?

If my current 12 a bit the bullet I would never just try to put this spare engine in it, cause I have no clue if it's any good. Maybe with it apart one day I will ports and rebuild it...
Old 10-01-07, 06:43 PM
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Flywheel wrench from RB is the only thing I bought to take it apart. If you have regular tools, you can take one apart easily.

Go ahead and disassemble it. If worse comes to worse and no one buys anything from it, it will still be atleast a learning experience.


But let me know if a housing is still in good shape
Old 10-02-07, 01:39 PM
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buy the 2 1/8 socket and use an impact...much easier than the bar
Old 10-02-07, 02:39 PM
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I never have trouble taking the 54mm nut off the back with a 2 1/8 impact. The front 19mm bolt sometimes gives trouble.
Old 10-02-07, 02:54 PM
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Throw engine in back of running car. Drive to local truck repair shop. Have them remove the flywheel nut and front pulley nut. Presto, hard stuff done. Those 1" drive 1500+ ft/lb impact wrenches have *zero* issues with the flywheel nut, no matter how long it's been rusted on.

-=Russ=-
Old 10-02-07, 03:14 PM
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I've never had an issue with the nut and my little 1/2" impact. The front bolt is the nasty one.
Old 10-02-07, 06:38 PM
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+1
Old 10-02-07, 06:51 PM
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I don't have an impact gun...looks like Ill just have to put the pipes to 'er.
Old 10-02-07, 08:31 PM
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Originally Posted by '84-12A-GSL
I don't have an impact gun...looks like Ill just have to put the pipes to 'er.
princess auto sells impact guns cheep
Old 10-02-07, 09:48 PM
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^yeah, but you need a compressor too.
Old 10-05-07, 10:36 PM
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who doesnt have an air compressor?
Old 10-08-07, 09:15 AM
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Originally Posted by kgray
^yeah, but you need a compressor too.

i was thinking of an electric gun i payed like $50 for it i use it all the time for random stuff not sure if it will be strong enough for the job tho.
Old 10-08-07, 09:42 AM
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I has an emblem

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Originally Posted by 510wagon
i was thinking of an electric gun i payed like $50 for it i use it all the time for random stuff not sure if it will be strong enough for the job tho.
yes it will


Thats what I use
Old 10-08-07, 03:30 PM
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Some of the electric impacts have more torque and hammering power than the air ones do. I suggest you break the front e-shaft nut loose first, it will need some heat to soften the threadlock. Don't remove it, just lossen it, then hit the flywheel nut.
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