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Carbon Apex Seals

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Old 05-08-07, 11:08 PM
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Wish he had a running rx7

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Carbon Apex Seals

Ok I have no clue if this would be good or not. I'm planning on get alot out of my n/a 87 rx7 I'm doing a rebuild really I'm going to street port, exhaust, and a bunch of other stuff now i want to know would carbon apex seals be good for this engine or not. I know that they are used for racing and everything but this is going to be a mainly a daily driver/ racing machine. I know you can't get much out of a n/a. Some way and some how i'll do it. If carbon isn't the way to go then that is fine. Now if it is Steel that i have to go with I want to know where i can go to get cheap seals.
Old 05-08-07, 11:29 PM
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Not recommended for the street...
They don't seal as well as multi-piece (steel) apex seals.


-Ted
Old 05-08-07, 11:36 PM
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Wish he had a running rx7

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Ummm well I just found the apex seals from the T2 in the garage they came off a S5 could i put them in the n/a S4 and if so how can i tell if they are good do i measure them.
Old 05-09-07, 01:33 AM
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All the apex seals from 1986+ are the same Mazda part number...

Yes, you can use them.

8.0mm = brand new
7.5mm = first wear limit, recommend to change inner apex seal spring (Don't ask me why)
7.0mm = absolute wear limit - replace with new


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Old 05-09-07, 04:56 PM
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Wish he had a running rx7

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ok thanks for everything
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