This new C.A.R. project sounds interesting.
Will you be overclocking it?
What about cooling, will you be upgrading that too?
Not sure yet.
The first "cooling" mod will be the addition of a real water temp gauge.
The stock cluster gauge is actually fake...more of a three position indicator ("COLD", "NORMAL" and "YOU'RE ALREADY FUCKED") than a full sweep gauge.
As the weather warms up I'll see how the stock rad/fan are doing.
Aftermarket aluminum radiators abound (Koyos and Fluidyne) and aren't hideously expensive.
Seriously though, as I'm sure you are aware if you want real performance from that engine, a high flow exhaust system is a MUST. Whether you go down the expensive route and get a genuine high flow cat or save money and just dump the cat is up to you. You could always put the cat back on for the next inspection.
A suitable cat for the car runs just under $500, which is horribly pricey for a part that hurts performance.
The exhaust currently installed is a cheap, all welded cobble-job, but it does have a cat which got me through emissions. This cat will probably be completely burnt up in another few months (as you noted, rotaries spew out very high exhaust temps) so something must be done.
I'm leaning towards removing the entire exhaust and going with a Racing Beat full roadrace twin system (no cat) and simply rebolting the cat system back on for the next test in two years. It's rumored that such a swap gains about 30+ RWHP, power the car could definitely use. Such a conversion will cost right at $1000 though so I'm exploring cheaper options. I don't want an obnoxiously loud car....
Whichever route you take, watch out for the exhaust temps though. I used to know someone who rallied an RX7 with all the suitable mods and he set fire to the grass under the car on several occasions.
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