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RetroTuned

RetroTuned

The details make the difference

Tag: FB

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Broken sunroof knob: 40 years of plastic-on-plastic finally gives out

Posted on August 28, 2026August 28, 2026

The FB’s OEM sunroof crank was always the weak link — plastic spline, plastic worm gear, plastic receiver. Mine finally let go. Here’s what breaks, why it can’t be repaired, and the 20-minute swap that fixes it.

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Home » FB

Watts link & trailing arm modification

Posted on June 30, 2017July 7, 2017

110The watts-link and trailing arm rear suspension in the first-gen SA (78-80) and FB (81-85) Mazda RX-7 is notorious for”binding” at the extremes – full extension and compression of the …

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