A Guide to Replacing the Starter Motor on Your 1973-1981 Buick Regal
Don't get stranded by a bad starter; understand the symptoms, brands, and replacement process for your classic Regal.
- A common failure on 1973-1981 Regals is 'heat soak', where the starter fails to work when hot.
- Upgrading to a modern, gear-reduction mini-starter is a popular and effective solution for heat soak and provides more cranking power.
- Listen for symptoms like a single click, slow cranking, or grinding noises, but always test the battery first.
- Replacement is a DIY-friendly job, but checking for proper gear mesh, with shims if needed, is critical to prevent damage.
Is Your Regal's Starter Failing?
A failing starter rarely dies without warning. For 1973-1981 Buick Regal models, the signs are usually clear. Recognizing them can help you avoid being stranded. Always check your battery first, as a weak or dead battery causes the most common starting issues. If the battery is healthy, the starter is the next likely culprit.
- Single Loud Click: You turn the key and hear one solid 'CLICK' from the engine bay, but the engine doesn't crank. This is a classic sign of a bad starter motor or solenoid.
- Slow, Labored Cranking: The engine turns over much slower than usual, as if the battery is weak. If the battery is good, this can point to a starter motor that is worn out and drawing too much power.
- Grinding Noise: A harsh grinding or screeching sound when you try to start the engine means the starter gear is not meshing correctly with the flywheel. Stop trying to start the car immediately to avoid expensive flywheel damage.
- No Sound at All: If you turn the key and get nothing—no click, no crank, but your dashboard lights work—the problem could be the starter, solenoid, or the wiring in between.
- Hot-Start Problems (Heat Soak): A very common issue on these older GM vehicles, especially V8s. The car starts fine when cold, but after a long drive, you shut it off and it refuses to restart until it cools down. This happens when the starter gets too hot from the nearby exhaust manifold, increasing its internal resistance.
Grinding Kills Flywheels
If you hear a grinding noise, do not keep trying to start the car. You could be damaging the teeth on the flywheel. Replacing a flywheel is a much bigger and more expensive job than replacing a starter.
Choosing the Right Aftermarket Starter
For a classic car like the 1973-1981 Regal, you have several good aftermarket options. The original Delco starters were large and heavy, and while reliable, modern technology offers significant improvements. OEM parts are no longer readily available as new, so the market consists of new aftermarket and remanufactured parts.
Brand Quality Tiers
Good - Standard Replacement:
- MPA (Motorcar Parts of America): MPA is a major manufacturer that produces new and remanufactured starters under brands like Quality-Built. They are a common, reliable choice for a standard, budget-friendly replacement that meets original specifications.
Better - OE-Style & High-Torque:
- ACDelco: As GM's parts division, ACDelco offers both remanufactured and new starters that are a trusted choice for fit and function. They provide a dependable, OE-style repair.
- Powermaster: A popular brand in the classic car world, Powermaster offers high-torque, gear-reduction starters. These are smaller, lighter, and spin the engine faster than the originals, making them a great upgrade, especially for modified engines or to solve heat soak problems.
Performance - High-Torque & Mini-Starters:
- Proform: Proform specializes in performance parts, offering 100% new, high-torque mini-starters. These provide excellent clearance, especially if you have aftermarket exhaust headers. However, owner reviews are mixed, with some reporting early failures or difficult installation, while others are very satisfied.
Pro-Tip: Consider a Gear-Reduction Starter
For any Regal, but especially one with a V8 and headers, upgrading to a modern gear-reduction or "mini-starter" from a brand like Powermaster is a smart move. They are more efficient, weigh less, and their smaller size provides better clearance from hot exhaust parts, which is the best way to permanently solve heat soak issues.
What Will a New Starter Cost?
The price for a new aftermarket starter for your 1973-1981 Buick Regal can vary based on the brand and type. Here is a general breakdown of what you can expect to pay for the part.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Standard) | $62 - $150 |
| New Aftermarket (High-Torque/Performance) | $150 - $385 |
| Remanufactured Aftermarket | $70 - $180 |
| Shop Labor | $100 - $250 |
Frequently Asked Questions
What is a "heat soak" problem?
Heat soak happens when the starter motor and solenoid absorb excessive heat from the engine and exhaust after the car is shut off. This heat increases the electrical resistance inside the starter's windings, requiring more power to crank the engine than the battery can supply. The result is a starter that works when cold but fails to engage when hot. A heat shield or a modern mini-starter can solve this.
Do I need to add shims when installing my new starter?
Sometimes. GM starters from this era may require thin metal plates called shims to properly align the starter gear with the flywheel. Improper alignment can cause grinding noises and damage to both the starter and the flywheel. Always check for proper gear mesh before finalizing the installation. Many new starters come with a set of shims.
Is this a difficult job to do myself?
For a DIY mechanic with basic tools, replacing the starter is very feasible. It's typically held on by two bolts and is located on the passenger's side of the engine block. The main challenges are safely lifting and supporting the vehicle and working in a tight space. Always disconnect the battery's negative terminal before starting work.
What's the difference between a new and a remanufactured starter?
A new starter is built with all-new components. A remanufactured starter starts with an original starter core (the main housing), which is then disassembled, cleaned, and rebuilt with new or re-machined internal parts like bushings, brushes, and the solenoid. Reputable remanufactured starters from brands like ACDelco or MPA are a reliable and cost-effective option.
Technical Specifications
The starter is typically located on the passenger side of the engine, mounted to the engine block, and engages with the flywheel. It is secured by two bolts. Both V6 and V8 engines were available, but the mounting and general design are similar. Some starters may require shims for proper alignment.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.