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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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The new fit: Fine Tune Alignment & OEM specs

Posted on July 16, 2025July 24, 2025
Mazda RX-7 GSL-SE With Toyota Supra MK2 wheels and Accelera Alpha tires

00Selene is about to get some new shoes – I have finally found some 185/55r14 tires that are decent enough by Accelera. They get horrid wet-weather reviews, so we’ll see, …

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Restore rusty bits: DIY Electrolysis

Posted on October 11, 2018September 3, 2026

20

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DIY custom brake lines

Posted on April 1, 2018July 16, 2025
Custom brake lines - FB RX-7

00There’s a lot of information out there about making DIY brake hard lines, and having gone through a few walk-throughs, youtube videos, and a trip to O’Reilly’s I felt confident …

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WRX foot pedals

Posted on July 2, 2017July 2, 2017

30With a few modifications to the factory SA / FB foot pedals, you can install WRX footpedals safely and securely.  

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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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keep it old school

Posted on June 9, 2017July 1, 2017

00Join us on Sunday at the Old School Reunion – the Pacific Northwest’s most epic showing of vintage imports. We’ll be posting photos during the event, but don’t sit on …

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Mission

Posted on May 10, 2017January 31, 2018

40Welcome to Retrotuned, a resource dedicated to those passionate about vintage automotive aesthetic, artful engineering, and the love of all things revving. We provide a time-proof, always-updated repository and resource …

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