It’s somewhat surprising that there hasn’t been a decent aftermarket radiator for the first-gen Mazda RX-7 out there, but if you drive an FB, worry no more. Koyorad has just introduced the latest aluminum radiator in their ever-growing line for Japanese classics, a project that began during last year’s JNC Touge California.
At the event, a Koyorad representative struck up a conversation with Smith McGehee after taking notice of his RX-7. The two of them began a collaboration that led to Smith’s car being the test fitter for the prototype radiator.
The result is a new all-aluminum radiator for 1983-85 Mazda RX-7s running either the 12A or 13B rotary engine and a manual transmission. It’s part of Koyorad’s high-density HH Series, developed with a two-row 48mm core for increased coolant volume as well as maximum circulation and airflow.
As with all Koyorad radiators, they bolt right in to replace the OEM unit and mates directly to the factory fan shroud. You can see the radiator’s fitment in Smith’s car above. Now FB RX-7 owners can take to the hills and canyons without fear of overheating their high-revving rotaries. Further information can be found at Koyorad Racing’s website. Also, stay tuned for an announcement about Touge California 2016!
Some images courtesy of Koyorad, Smith McGehee.