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

Headlight bushings

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Old Oct 29, 2007 | 02:22 PM
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Default Headlight bushings

Does anybody have close-up pics of them or exact
dimensions?
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Old Oct 29, 2007 | 02:51 PM
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Originally Posted by Sliding
Does anybody have close-up pics of them or exact
dimensions?
http://www.mamotorworks.com/corvette...rame=1.249.853
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Old Oct 29, 2007 | 03:41 PM
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Size varies.

[IMG][/IMG]
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Old Oct 29, 2007 | 04:21 PM
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Originally Posted by schrade
Size varies.

[IMG][/IMG]
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Old Oct 29, 2007 | 05:13 PM
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Ecklers has a Delin gear and the three Delrin drive pins/bushings for about $36.00. I have done both on my 96 and followed the instruction that came with the new gear. Purchase both as it is easy to hurt the teeth removing the orginal gear. And file the bottom of the new gear so the teeth will mesh with the worm gear in the case. This is in the instructions. I removed the complete head light and set it on a car towel and remove the electric motor from the head light this way. Much quicker to remove the roll pin that holds on the linkage. pins .155 as one of mine was cracked. Order two pins froma Chevy dealer just in case as they are larger than a 1/8 pins at Home Depot. It is easier than you think. I also have the plastic head lights that are much lighter than the glass. Good luck. PM me if you get stuck.

Louis
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Old Oct 30, 2007 | 04:47 AM
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I saw a few repair kits (only bushings I think) on e-bay for
a few bucks but nobody wants to ship overseas.

Do you think that bushings only will solve the problem, or is the gear
necessary also?

I'm having problems only with right headlight at the moment, but
I now my luck, if I fix only one, the next day, the other one will be gone.
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Old Oct 30, 2007 | 06:06 AM
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Originally Posted by Sliding
I saw a few repair kits (only bushings I think) on e-bay for
a few bucks but nobody wants to ship overseas.

Do you think that bushings only will solve the problem, or is the gear
necessary also?

I'm having problems only with right headlight at the moment, but
I now my luck, if I fix only one, the next day, the other one will be gone.
yes. the bushings/drive pins are the problem. Motor stays running for a few seconds
when you turn lights off or on. Just be carefull not to damage the teeth when you remove the gear from the motor housing.
PM me when you get your bushings and see if the papers that come with it shows you how to do the fix. Ecklers has Great information and pictures on the fix. Will scan and email to you.

Louis
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Old Oct 30, 2007 | 07:07 AM
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PM me when you get your bushings and see if the papers that come with it shows you how to do the fix. Ecklers has Great information and pictures on the fix. Will scan and email to you.
Will do! Thanks!

Last edited by Sliding; Oct 30, 2007 at 07:09 AM.
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Old Oct 30, 2007 | 07:20 AM
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This is what they look like.
[IMG][/IMG]
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Old Oct 31, 2007 | 06:41 AM
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Print this article. But you can purchase delrin gears and the three pins for $36.00 for each light from Ecklers. Do both sides as the other side will need it too.

Last edited by Louis Bartay; Oct 31, 2007 at 06:43 AM.
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Old Oct 31, 2007 | 10:40 AM
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MAD really likes the bronze gears at $60 each If the original part has lasted 15 to 20 years, the Delrin parts should work. Thanks for the info as I will be soon needing parts for my 89.
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Old Oct 31, 2007 | 08:56 PM
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The dimensions are 27/64 by 29/64, just take it easy with the screws holding everything together. Some of them don't like to come out kindly.
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Old Oct 31, 2007 | 09:11 PM
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Worse comes to worse, buy a plastic dowel. Cut it to the height. Keep going back and shortening them until they fit as they should. As far as diameter, I put mine on a lathe and kept sanding them until they would fit and let the metal part go on as it should.

This was for my 1991 Lincoln Town Car's driver side front power window motor. The repair is now three years old. Cost me less than a dollar.

A C4 headlight motor is not really any different.
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Old Nov 1, 2007 | 09:01 AM
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There's A Sticky At The Top Of This C4 Tech/Performance Forum.

Does It Need Editing???
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Old Nov 1, 2007 | 02:41 PM
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Originally Posted by Sam Lam
MAD really likes the bronze gears at $60 each If the original part has lasted 15 to 20 years, the Delrin parts should work. Thanks for the info as I will be soon needing parts for my 89.
I was looking for a Hurst shifter for my ZF...Jegs $139.00 plus freight. MAD, Ecklers,Corvette America were all $200.00 to $249.00 plus freight. It saves when you look and plan ahead.
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Old Nov 1, 2007 | 07:19 PM
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Originally Posted by 80sRule
Worse comes to worse, buy a plastic dowel. Cut it to the height. Keep going back and shortening them until they fit as they should. As far as diameter, I put mine on a lathe and kept sanding them until they would fit and let the metal part go on as it should.

This was for my 1991 Lincoln Town Car's driver side front power window motor. The repair is now three years old. Cost me less than a dollar.

A C4 headlight motor is not really any different.
A substitute bushing might be okay - IF IT'S HOLLOW!

If it ain't, what's gonna' 'give', when somethin' goes wrong in the works?

Hollow bushings = $6.00.
Nylon gear = $25.00.
Bronze gear = $60.00.
Worm drive =
Motor =
Etc., = need we go any further?
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Old Nov 2, 2007 | 12:06 PM
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Originally Posted by schrade
A substitute bushing might be okay - IF IT'S HOLLOW!

If it ain't, what's gonna' 'give', when somethin' goes wrong in the works?

Hollow bushings = $6.00.
Nylon gear = $25.00.
Bronze gear = $60.00.
Worm drive =
Motor =
Etc., = need we go any further?
The hardware store sold hollow rods that have worked great, my dad made sure I did. I completely didn't mention it, but you are dead right.

I liked the fact that Ford used that motor setup versus some of the crap setups GM has used in cheap cars; see Grand Am, Malibu and Alero. They used a crappy plastic piece to retain the window to the regulator, and the motor itself doesn't give, it pulls the wire until it breaks or the motor dies.

The plastic breaks real nice when the motor would've f***ed itself over. Makes that whirring noise that it's stirring up the pieces of broken bushings, but nothing is getting done.

Last edited by 80sRule; Nov 2, 2007 at 12:18 PM.
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Old Dec 1, 2007 | 09:24 PM
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Did any model year have bronze gears from the factory?
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Old Dec 1, 2007 | 10:27 PM
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I have done a 88 and a 96 Corvete and a 94 Lt1 Trans Am and none had bronze gears. Save the money, none of the delrin gears were worn out. It is the new delrin busgings/drive pins that that is the problem. I hurt the first gear when I was trying to remove it. Learned how after three sets. Ecklers has the delrin gears and pins and the instructions are easy to follow.
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Old Dec 12, 2007 | 06:16 PM
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Originally Posted by vetteracer92
The dimensions are 27/64 by 29/64, just take it easy with the screws holding everything together. Some of them don't like to come out kindly.
Which dimension is the length and which is the outside diameter?
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