rotaryaviation apex seals???
#1
Eats, Sleeps, Dreams Rotary
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rotaryaviation apex seals???
I read on rotaryaviation website that they dont make apex seals for 12a's. Couldnt there 2 or 3mm seals be used somehow? I read about guys interchanging rotors-13b rotors in 12a housing or vise-versa. Can they be worked to fit a 12a?
#4
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It is not the width of the seal that is the problem (2mm or 3mm), but the length of the seal. The 13B engines have rotors that are 10mm wider than the 12A, so the seals would be too long. The interchange thing that you you heard about is using 13B rotors, housings, and e-shaft with the 12A side plates. This creates a 4 port 13B engine (this only works with early (pre '85) 13B housings because because of the location of the coolant seals).
Kent
Kent
#7
Savanna Rx-7
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Originally Posted by Latin270
Much cheaper from Rotary Aviation.
there seems to be some quesitons about there longevity, some guys are talking like 10K miles and there having problems. while they might be cheaper, do you really want to save a few bucks and then have to tear your engine apart 10~20K miles later cause they don't last as well as the OEM parts?
I would personally do some more research first about the longevity issues and there were some fitment issues as well I think (warpage or something).
Kenn
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#8
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Originally Posted by kenn_chan
there seems to be some quesitons about there longevity, some guys are talking like 10K miles and there having problems. while they might be cheaper, do you really want to save a few bucks and then have to tear your engine apart 10~20K miles later cause they don't last as well as the OEM parts?
I would personally do some more research first about the longevity issues and there were some fitment issues as well I think (warpage or something).
Kenn
I would personally do some more research first about the longevity issues and there were some fitment issues as well I think (warpage or something).
Kenn
Rotary aviation has had no problems with these seals in N/A and aircraft applications, and has (I believe, correct me if I'm wrong) switched to a different manufacturer. In spite of this, the jury is still out on these seals because as far as I know we have yet to see a set of them accumulate high mileage in a high-boost application. They simply haven't been out long enough for anybody to rack up the mileage.
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Originally Posted by numan2
The reason I said Atkins is because RA doesn't make 12A apexes but Atkins does and their much less than Mazda seals.
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