Yeah believe me I've had my share of frustration with RX7 electronics, this is my 7th RX7 after all. All my FC's had electrical gremlins, and I'm sure the FD is the same although I've never owned one. Having the mechanical oil pressure gauge is great, but really its the oil temperature gauge I am thrilled about. Ever since my RX3 had one (which was a race car) I've wanted one in all my cars. Having an eye on your oil temperature while you are pushing your engine to its limit is important because as you say, its not really likely that a Mazda oil pump will fail, but rather more likely that your oil will overheat and ruin your motor as a result.Lucky wrote:Yep, makes perfect sense to me. It's interesting to hear the Mazda gauge is at least accurate as far as it goes, anyway. Don't remember hearing of oil pump failure on an RX-7 but given how much work the oil does in a rotary it definitely pays to keep an eye on it. As an FD owner, I'm pretty paranoid about how fragile the Mazda instrumentation is... it basically seems to be very accurate. If it's actually working at allThey all stop working sooner or later, that's the downside
I learned how easily this can happen rally-racing my RX3. Before I fixed the carburetor and ignition timing issues from the previous owner I would watch the oil temperature occasionally creep towards 240 degree's F or more. When I noticed this I throttled back of course and the lesson was learned. Without that gauge, I might've blown that engine at the first race without ever realizing it had issues.