Great cars...cheap to buy, and fun to drive. Congrats.
Apex seal problems have plagued all the rotary cars, and was still a problem on the third-gen cars, which is why the Renesis engine (RX-8) utilizes a curved lip, rather than traditional apex.
I was actually reading an article last night on rotary engines, and one of the statements was that the higher the RPMs, the longer the apex seal will last. That's why the NSU Ro80 had horrible engine life, becuase the owners would lag the engine frequently at low revs -- stressing the seals. (The article was in Octane magazine, and this is the first time I've heard that statement, but I could see how it could be accurate.)
And as far as being the only one who thinks the third-gens are the most beautiful, Aeronca, it will make you feel better to know that the reason the 93-95 RX7 (and the third-gen 300Z) sold so poorly in America is that they went from entry-level sports cars to $30,000 sports cars in a time when sports cars and coupes were selling very poorly.
GM also thought the 93-95 RX7 was one of the prettiest cars ever, which is why the 97-2004 Corvettes steal many of the lines directly from the Mazda. When I used to park my '99 C5 next to my buddy's '93 RX7, it was just hysterical to look at! It's like the Chevy boys just Americanized the RX7!
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As far as I can tell, the tip-seals (a huge problem in the old NSU Wankels and early Mazdas) was pretty well worked out by the time Mazda started building the RX-7. ...Though I like the first-gen cars, I think the third-gen RX-7 is one of the most beautiful cars of all time. Unfortunately, I guess I was in the minority, since they didn't sell very well.
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