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.
1968 Triumph HeraldFACTORY OEM SERVICE PROCEDURE
Delco Distributor Advance Specifications
DELCO DISTRIBUTOR ADVANCE SPECIFICATIONS
| Distributor Part No. | Centrifugal Advance (Dist. Degrees & RPM) | Vacuum Advance (Dist. Degrees & In. of Hg.) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deg. | RPM | Deg. | RPM | Deg. | RPM | Deg. | RPM | Deg. | In. Hg. | Deg. | In. Hg. | Deg. | In. Hg. | |||
| 7952800 | 0-1/2 | 500 | 7 1/2 | 900 | 9 1/2-11 1/2 | 1200 | 11-13 | 1450 | 1 1/2 | 2.5 | 7-9 | 7.0 | 9-11 | 10.0 | ||
| 7953166 | 0-1 3/4 | 400 | 7 1/2-9 1/2 | 1200 | 10 1/4-12 1/4 | 2000 | 11-13 1/4 | 2200 | 0-1 | 5.0 | 4 1/2-6 | 8.0 | 11-13 | 12.0 | ||
| 7953291 | 0-2 | 450 | 4.4-6.4 | 1200 | 7.3-9.3 | 2400 | 7 1/2-9 1/2 | 2500 | Begin | 3.8-6.2 | 7 | 12.2-14.6 | 11 | 20.0 | ||
| 7953500(1) | Begin | 500 | 5-7 | 1000 | ..... | .... | 11-13 | 2500 | Begin | 5.0 | .......... | ..... | 6-8 | 19.75 | ||
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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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