2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

First rotary rebuild.

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Old 08-22-02 | 11:22 PM
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kdxer200's Avatar
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First rotary rebuild.

Well I tore my parts engine down today. THe whole thing was packed w/ rust. At least it wasnt seized like I thought it was. Sobbs. The housings seem to be in good shape, but I'm going to rebuild w/ T2 housings, (I have an N/A)for porting reasons. Do I need the end and center housngs to match the rotor housings? Also I'm keeping it N/A for now, so I can use my current rotors, correct? And how should I go about getting all the stuck seals, and keepers out? I'm thinking of lightly sanding off the rust, then picking them out like usual. I'm going to throw a NO2 kit on her in the next month or two so should I have my friend order me 2 millimeter apex seals or larger, and 2pc. 3pc. etc?
Old 08-23-02 | 01:40 AM
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Sniper_X's Avatar
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From: Lawrenceville, ga
you have a long task ahead of you.

Removing rust from rotors is HARD.

so many tiny crevices.

All i can tell you is that rust PITS surcfaces.
Removes METAL.

You can use naval jelly and/or a wire (brass) brush to remove the rust, and use the ols seals to gouge out the crevices.

remember, all the crevices and seal surfaces have to have NO POINTS where you can catch in.

must be SMOOOOOOOTH. all movign surfaces.

and DO NOT BUMP THE ROTOR TIPS ON ANYTHING.
they bend so easilly and do not ever really go back into "round" for the corner seals to fit.
Old 08-23-02 | 01:50 AM
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mr_vaughn's Avatar
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Dremmel tool an bits
makes the work way easier removing the rust
Old 08-23-02 | 01:51 AM
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From: Lagrange, KY
Im about to where you are on an engine, but here is my question... where the hell did you find a 2 and 1/8 socket or wrench to take the damn flywheel off?
Old 08-23-02 | 01:53 AM
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I bought my flywheel socket at NAPA
Old 08-23-02 | 01:53 AM
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Sniper_X's Avatar
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From: Lawrenceville, ga
Sears.

get a peaice of angle iron from HOme Depot too.
drill holes for the flywheel and remove the nut.

just make sure it gets red loctitie when tightening.!
Old 08-23-02 | 01:54 AM
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Oh, it was $52 for it too, ******* expensive!
Old 08-23-02 | 02:24 AM
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From: Freakmont, CA
Originally posted by mr_vaughn
Dremmel tool an bits
makes the work way easier removing the rust
Um NO all cleaning of the engine should be done by hand if it is done with any sort of power tools you run the chance of wearing a groove that will make the wear of the seals un-even and cause premature engine failure. Check to see if the side housings are with in tolerance if so then you might be able to lap the housings but most of the time the rust is below the Mazda recommended Tolerance and you will have to replace the housing. And make sure when you are swapping parts you take into consideration there were motor differences between the S4 and the S5. Have fun.
Old 08-23-02 | 10:50 PM
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kdxer200's Avatar
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I used my dads 2 and 1/8th socket on an impact. If anyone in the Aurora IL area, let me know, I can take care of you.
Old 05-27-03 | 10:42 PM
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24.00 at sears 2 1/8 12point 3/4dr socket
Old 05-28-03 | 12:20 PM
  #11  
MURX7's Avatar
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From: Aurora, IL
wow, old post. Anyway I got mine from mazdatrix, and it worked fine.
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