C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C4 headlight Timing off?

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Old Dec 15, 2021 | 02:44 PM
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Default C4 headlight Timing off?

One of my headlights doesn't flip up as fast or seems like it gets caught on something I'll have to add a video later on but any idea what could cause that ?
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Old Dec 15, 2021 | 03:12 PM
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Most likely you have one of the opening gears failing on the slow side, which is causing drag and more friction. When those plastic / nylon gears fail, they cram up the gearbox mechanism with plastic dust / powder which gums up the works also before complete failure.

https://www.corvetteforum.com/forums...post1604411483

I haven't seen your car in person so I could be wrong, but this is a likely cause.
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Old Dec 15, 2021 | 03:13 PM
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FYI, you can simply fill the gear w/epoxy and re-assemble and that works great. Mine is going on 12 years, working great.
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Old Dec 15, 2021 | 09:46 PM
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Replacement plastic gears are cheap.
Brass gears will last forever but much more expensive.
Job is a little complicated for a novice mechanic with not many tools.
I did the brass gears on my first car.
When the car I have now needs them I will just replace them with the plastic gears.
I figure the first pair lasted 25 years.
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Old Dec 15, 2021 | 10:50 PM
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Good for you then. My original gears lasted 8 years and exploded, so I replaced them with brass gears that have been in the car since 1997.
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