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Paint Correction Sports Project · 2023

Porsche 911
Carrera

Year
1989
Colour
Grand Prix White
Duration
6 Weeks
Work Type
Paint Correction
Protection
Ceramic Coating

Vehicle History

The Story\nBehind the Car

This 1989 Porsche 911 Carrera 3.2 arrived from its second owner — a Prague-based enthusiast who had kept the car in consistent use for fifteen years. The original Grand Prix White had never been repainted, but decades of automated car washes, incorrect hand washing, and a single poorly executed machine polish had deposited a network of swirl marks, buffer trails, and micro-scratches across every horizontal surface.

The paint depth read at a consistent 105–115 microns across all panels, indicating no prior body repairs and sufficient material for a full multi-stage correction without risking the clear coat threshold. The decision was made to correct rather than refinish — preserving the original factory clear coat while achieving a gloss level indistinguishable from new.

A professional-grade ceramic coating was applied at the conclusion of the correction stages to protect the restored finish against environmental contamination and UV degradation for a minimum of five years.

1989 Porsche 911 Carrera as received — swirl marks visible in direct light
As received · Swirl marks under inspection light

Before & After

The\nTransformation

Work in Progress

Inside the\nProcess

01 — Stage 1 compound cut

Finishing polish being applied by machine

02 — Finishing polish · removing haze

Ceramic coating application

03 — Ceramic coating application

Final inspection under specialist lighting rig

04 — Final inspection · specialist lighting

Workshop Notes

The Outcome

The three-stage correction — compound, polish, finishing — removed an estimated 0.6–0.8 microns of clear coat across the most heavily swirled areas. Post-correction gloss readings averaged 94.8 GU at 60°, a measurable improvement from the 71.2 GU recorded on arrival. The paint depth remained well within safe operating margins at 104–112 microns throughout.

The ceramic coating was applied over a 48-hour cure cycle in a temperature-controlled environment. The owner was provided with a full paint depth map and gloss reading report for both pre- and post-correction states.

Before

71.2 GU

After

94.8 GU

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