A classic car restorer cannot find a distributor cap and rotor that are compatible for a Chevy 235-six distributor conversion, as the rotor spring tab hits a non-conductive center dot in the cap.

Existing replacement parts (cap and rotor) for the Chevy 235 distributor do not physically match, causing no spark. The machinist's instructions claim compatibility, but actual parts fail to work together.

Severity

4High

Willingness to Pay

implied

Added

Jun 8, 2026

Workarounds Described

Chased continuity break with multimeter to diagnose cap-rotor mismatch
Researched online to confirm parts are incompatible

Implied Software Gaps

Ignition parts compatibility database that confirms cap and rotor fit before purchase

App Concept

VintageDistributorMatch

A database and compatibility-checker app specifically for vintage and classic car ignition components. Users enter their vehicle, engine, and existing distributor model to find verified-matching caps, rotors, points, and condensers. It crowdsources compatibility data from experienced restorers and machinists, solving the trial-and-error pain of mix-and-match parts.

Key Features

Search by vehicle make/model/year or distributor part number
Cross-reference cap, rotor, point sets with physical dimensions and photos
User-submitted compatibility reports and ratings
Integrated marketplace to purchase verified-fit parts

Target Users: Classic car restorers, antique auto enthusiasts, and vintage car mechanics working on pre-1960 vehicles with aftermarket ignition conversions.

Revenue Model: Freemium with $4.99/month for unlimited compatibility checks and marketplace access; $0.50 per verified-part listing for sellers.

Existing Solutions Mentioned

Chevy points distributorZenith 11ADX12 carburetor

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