Quote:
Originally Posted by JL1RX7
Me personally I would spend the money on rebuilding the motor. Learn about the care and feeding of a rotary. Then drive it like you stole it every day and enjoy.
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Counterproductive as it may sound, hammering on the engine (under the right conditions) is actually a good way to promote engine longevity.
Rotaries are happy to hit redline while out driving around (don't do it while sitting at idle), so the old saying "A redline a day, keeps the carbon away" goes!
The high rpm operation helps get rid of carbon buildup that can/will cause your seals to stick in place and eventually fail.
Another (slightly more advanced) option is to actually feed distilled water to your engine through a vacuum port to "steam clean" the engine internals. It requires a specific procedure and isn't that great for the cat (I think? I haven't had a cat in my rx-7 in YEARS
) but it will def help with getting ride of stubborn carbon deposits.