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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.


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Old 02-25-2008, 02:15 AM   #1
turboed13b
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Default engine rebuild question

quick question would the overhaul kit "A" from atkins rotary be the only thing i need for a engine that has been rebuilt but the coolant seals failed?






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Old 02-25-2008, 12:41 PM   #2
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Post this in RotaryResurrections vendor section as he will have the answer you need.
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Old 02-25-2008, 10:07 PM   #3
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well the engine only has a couple thousand miles on it so the apex seals should be good right?
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Old 02-27-2008, 01:27 AM   #4
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hahaha ^+1
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Old 02-27-2008, 12:50 PM   #5
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I agree with Kevin... I would pull the engine apart and inspect it FIRST maybe post pictures if u have questions.. but I would replace all the seals and o-rings at the bare minimum...

My question is who rebuilt the last engine, why did the coolant seals go out?
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Old 02-28-2008, 01:40 AM   #6
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Might as well cover all your bases and refreash anything you can, and heck if your going to open it up why not clean up the ports a bit too? Or is it already ported?
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Old 02-28-2008, 10:57 AM   #7
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Quote:
Originally Posted by RotaryResurrection View Post
It would be kinda dumb to just replace the coolant seals and slap it all back together. You at least want to replace the parts that I replace in my basic rebuild. Coolant seals/dowelpin orings/tension bolt seals, front/rear main seals, apex seals (springs can be reused), cornerseal springs, viton oil control orings, thermal pellet.

I dont use a particular kit so I can't say wha tis contained in each. Use the list above as a minimum purchase list.
I made sure to replace my side seal springs as well. I think that's the only thing I didn't see on your list that I would do.
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Old 02-28-2008, 03:32 PM   #8
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So basically you won't know everything you will need until you open it up, but yeah since your taking out the engine, might as well look at all the other parts in the bay. And give it a good scrub down too
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Old 03-04-2008, 09:16 PM   #9
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Originally Posted by RotaryResurrection View Post
SS springs are usually fine to reuse, unless it is an NA with 4011 thousand miles on it that has a ton of carbon in the grooves, and bends them up on removal. Sure, in a perfect world we would all have engines full of new parts, but we have to draw the line somewhere in order for our budgets to survive intact.

As I've said before, I believe the art to building rotaries is not so much in knowing how to assemble parts...anyone can do that. It is knowing what you can and can't get by with reusing successfully.
Yeah about half of mine wouldn't come out without destruction, so I needed new. Even so they're pretty darned cheap. In my build if it was under $20 I got it whether I needed it or not. I did pretty much all springs, all rubber, apex seals, and such.
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