Sun SST-802 Tachometer Restoration: Sender-Free Upgrade

Sun SST-802 Tachometer Restoration: Sender-Free Upgrade

Sun SST-802 Tachometer Restoration

The Sun SST-802 is one of the most iconic tachometers of the muscle car era — a staple in 1960s and 1970s hot rods, drag racers, and dealer-installed performance packages. This particular example arrived at our shop with a failed circuit board and heavily worn cosmetics. The end result? A completely restored, sender-free tach with OEM looks and modern performance.

What We Offer for Sun Tachometers

At Calibrated Classics, we specialize in restoring vintage Sun tachs — especially popular models like the SST-802 and ST502. Each unit receives a meticulous mechanical and cosmetic restoration, paired with a modern Westach replacement circuit board for improved accuracy, better reliability, and simplified installation.

✅ No external sender box required — just Signal and Ground wiring.

✅ Works with most ignition systems including HEI, MSD, and standard points-style setups.

Key Features of Our SST-802 Restorations

  • ✅ Sender-free operation — eliminates the bulky sender box
  • ✅ Modern Westach circuit board upgrade
  • ✅ Compatible with most ignition systems (HEI, MSD, stock, etc.)
  • ✅ Cosmetic overhaul: new chrome, pointer repainting, face restoration
  • ✅ Fully calibrated and tested before return shipping

This Gauge: Restoration Breakdown

Here’s what we did on this specific SST-802:

  • Full teardown and ultrasonic cleaning
  • Movement disassembled, cleaned, and pointer rebalanced
  • Dial carefully preserved or restored depending on wear
  • Chrome bezel replaced with a replated original
  • Original housing and lighting system cleaned and restored
  • Westach circuit board installed — sender unit eliminated
  • Leads labeled for easy Signal + Ground hookup

With this upgrade, your Sun tach performs like new — without sacrificing vintage appearance.

📸 Before & After Photos

Original unrestored condition

Original unrestored condition

Fully restored and reassembled

Fully restored and reassembled

Why Calibrated Classics?

  • 🔧 True OEM-style restorations with upgraded internals
  • 📏 Smooth, accurate readings across the full RPM range
  • 🔁 No sender required = fewer failure points
  • 💬 Trusted by enthusiasts nationwide
  • 🛠 Backed by our full 1-year warranty

Looking for a different model?
Check out our Sun ST502 restoration, or see all restoration services we offer.

Ready to Restore Your Sun Tach?

Request a Quote or Contact Us — we’re here to help bring your vintage tachometer back to life.