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

Advice on 91 headlights!

Thread Tools
 
Search this Thread
 
Old Jul 26, 2008 | 08:39 AM
  #1  
RRT vette's Avatar
RRT vette
Thread Starter
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default Advice on 91 headlights!

Search results turned up a little help.

My buddy has a 91 that I've been helping him with. We've replaced the valve cover gaskets and outer window weather strippings. Next is the headlight delrin bushings then onto the antenna mast.

Problem: the left headlight does not sit flat with the hood when the lights are off. It sort of sags down on one end. You can push the top end down with your finger and it flattens out, but falls back down when you let go. I can tell the armature linkage feels a little loose on the left headlight also.

When operating the headlights on and off, they will go about half way and start swinging until they close (randomly). Sometimes they work normal and sometimes not. I figure the bushings will correct this.

The main problem I'm worried about is the loose left headlight. I wanted your guys opinions before replacing the bushings and still having the same problem.

Haven't been around here very much like I use to....how are some of my old buddys doing?
Reply
Old Jul 26, 2008 | 10:37 AM
  #2  
Overboost's Avatar
Overboost
Racer
 
Joined: Dec 2007
Posts: 345
Likes: 0
From: Flint Michigan, #2 in unemployment, #3 in Violent crimes
Default

sounds like the gear on the inside is toasted.
my bushings were non existent when I pulled mine but my lights closed perfect, just kept running on is all.

I would say the gear because it gets to a point and then cannot continue travel. at that point the light will just flop because it cannot finish its range of motion even if you use the manual ****, it engages the gear also.

try pushing on the light and also turning the ****, this will go past the "flat spot" and should give you some teeth to catch it on. if not, I would say the gear is shot all the way to the park position.
Reply
Old Jul 26, 2008 | 08:02 PM
  #3  
rodj's Avatar
rodj
Le Mans Master
25 Year Member
 
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Default

I have similar problem , have full travel but still loose.
Found it to be "wear " in the external linkage were the pin rides in the slot.
Modification project ahead.
Reply
Old Jul 26, 2008 | 10:29 PM
  #4  
RRT vette's Avatar
RRT vette
Thread Starter
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default

Thanks guys. Good points on both ends. I guess I will find out a little more when I tear into it.
Reply
Old Aug 1, 2008 | 07:00 AM
  #5  
RRT vette's Avatar
RRT vette
Thread Starter
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default

I'm thinking I read on here at some point that these bushing can be purchased at Home Depot. Any pointers on that before I order them online? Or anyone know a good place to purchase them online?
Reply
Old Aug 1, 2008 | 09:17 AM
  #6  
onedef92's Avatar
onedef92
Team Owner
20 Year Member
 
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
Default

I purchased mine from HD, (sorry I don't have the item number in front of me) but you can order them online from Mid-America Motorworks (MAM).

http://www.mamotorworks.com/corvette?frame=1.853
Reply
Old Aug 1, 2008 | 11:06 AM
  #7  
GKK's Avatar
GKK
Safety Car
15 Year Member
 
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
Default

The motor is probably getting weak.

I replaced the bushings and plastic gears and the headlights worked fine for about a year. Then, one of the headlights started to not open. I finally bought two rebuilt headlight motor assemblys from Eckler's and the headlights have been fine.
Reply
Old Aug 1, 2008 | 12:42 PM
  #8  
Wildride's Avatar
Wildride
Burning Brakes
Veteran: Air Force
25 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
 
Joined: Sep 1999
Posts: 786
Likes: 31
Cruise-In II Veteran
Default

Home Depot part number part number 3069987278.

One user had reported problems with the Home Depot bushing collapsing after a few weeks service. That is why I went to Ace and picked up some bushings that had a heavier sidewall. I did have to shorten them slightly to fit into the gear. Ace also had bushings that looked similar to and were the same size as the Home Depot bushing.

The size I have scribbled down was 27/64 by 29/64. Which is length vs. diameter I don't recall.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Aug 1, 2008 | 02:28 PM
  #9  
bikertrash2001's Avatar
bikertrash2001
Advanced
 
Joined: Jun 2008
Posts: 78
Likes: 0
From: Decatur Alabama
Default

Mine was doing the exact same thing not holding tight against the stops. I got a repair kit, bushings and gear. The gear was fine but the bushings were gone. Did the repair and now the housing sits flush and tight against the stops.
Reply
Old Aug 26, 2008 | 03:11 AM
  #10  
RRT vette's Avatar
RRT vette
Thread Starter
Le Mans Master
15 Year Member
 
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Default

Thanks guys. I'll be working on it this weekend coming up.
Reply

Get notified of new replies

To Advice on 91 headlights!





All times are GMT -4. The time now is 05:39 AM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE