The complete, zero-subscription garage management toolkit engineered specifically for classic car owners, muscle car restorers, and vintage truck builders.

Modern vehicle apps are bloated with subscription fees, cloud logins, and diagnostic menus meant for computer-controlled commuter cars. They do nothing for carbureted V8s, mechanical distributor curves, or flat-tappet camshafts. Flimsy paper notepads tear, smudge, and get lost across tool trays.

The Heavy Iron Workshop System bridges the gap between precision digital math and rugged garage-floor paperwork. It packages three focused, single-purpose tools into one unified lifetime toolkit:

What Is Included in the 3-in-1 Suite:

1. The Interactive Shop Engine (index.html)

• Instant Powertrain & Gearing Math: Calculates total ignition timing advance with automatic warnings if timing exceeds 38° BTDC on pump gas; calculates exact flat-tappet ZDDP zinc dosage (2.0 oz per quart of crankcase oil); computes highway cruising RPM across 65 MPH and 75 MPH based on tire diameter, rear axle ratio, and transmission top gear.
• Dual-Trigger Service Interval Tracker: Monitors service schedules against both mileage and elapsed calendar months (3,000 miles / 6 months for oil; 6,000 miles / 12 months for chassis zerks), surfacing dynamic status badges (OK, DUE SOON, OVERDUE) to protect classic engines that sit for long periods.
• Offline & Zero-Subscription Architecture: Runs completely inside any browser (Safari, Chrome, Edge) on your phone, tablet, or desktop. No accounts, no monthly bills, and no internet connection required. Backed up with one-click JSON data export and import.

2. The Master Chassis Setup Dossier (master-chassis-dossier.pdf)

• 4-Page Vector Setup Binder: Engineered with a dedicated 0.65-inch (16.51 mm) left margin clearance to prevent 3-ring binder punch dies from cutting into printed text or data lines.
• Chassis Provenance & Valuation Register: Structured fields for frame metadata, paint codes, VIN verifications, and agreed-value insurance policies (Hagerty/Grundy).
• Hardware Bag-and-Tag Index: Generous 11.5 mm line spacing for sub-assembly thread pitch, bolt grade (Grade 2 vs. 5 vs. 8), and dry versus lubed torque specifications.
• Custom Rewiring Legend: 5-pin Bosch automotive relay pinouts and circuit tracing logs (AWG, wire color, stripe tracer, fuse amperage).
• Valuation Sourcing & Receipt Paste-Up: Formal paper trail spreads for appraisals and parts receipts to defend agreed-value insurance claims.

3. The Routine Service Log Sheets (routine-service-log-sheets.pdf)

• Heavy-Duty Workshop Spacing: Features massive 23.5 mm box row heights designed for thick shop pens, pencils, and grease-covered hands.
• Quick Verification Checklists: Rapid inspection tags for engine oil/ZDDP zinc, chassis zerks, transmission fluid, brake hydraulics, and cooling flushes.
• Binder-Ready: Print 5 to 10 copies for your workbench clipboard or binder to document ongoing provenance and parts installations.

Key Features & Specifications:

• One-Time Investment: No recurring subscriptions or hidden cloud fees.
• Mobile & Desktop Ready: Optimized with oversized touch targets and native numeric dial pads.
• Print Engine: Pre-calibrated for crisp 8.5″ x 11″ (US Letter) monochrome printing.
• Instant Delivery: Download all three assets directly to your computer or phone immediately upon purchase.