Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1980 Triumph SpitfireFACTORY OEM SERVICE PROCEDURE
MARELLI Distributor Advance & Retard Specifications
NOTE:
FOR DISTRIBUTOR RPM & DEGREES, DIVIDE SPECIFICATIONS BELOW BY 2
| Distributor Part No. | Rot. (1) | Centrifugal Advance (Engine Degrees @ RPM) | Vacuum Advance (Engine Degrees @ In. of Hg) | Vacuum Retard (Engine Degrees @ In. of Hg) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4387796(2) | C | 0 | 8 | 12.4 | 15.8 | 18 | 0 | 6 | 12 | 15 | ..... | ..... | ..... | ..... | ||||
| 1000 | 1800 | 2500 | 3000 | 3500 | 4 | 8 | 12 | 14 | ..... | ..... | ..... | ..... | ||||||
| 4430224(2) | C | 0 | 10 | 15.8 | 20.5 | 28 | 0 | 6 | 10 | 14 | ..... | ..... | ..... | ..... | ||||
| 1000 | 2000 | 3000 | 4000 | 5200 | 4 | 7 | 10 | 12 | ..... | ..... | ..... | ..... | ||||||
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Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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