Window track
Thread Starter
Instructor
Joined: Dec 2005
Posts: 121
Likes: 2
From: Middletown Delaware
Window track
The power window on the drivers side of my 78 is very slow and will not go up all the way unless the door is open. Even at that with as much upper adjustment as possible the window has a slight gap. I have puled the regulator to rebuild. The motor is fine. I am going to replace all rollers and clean the gear. While inspecting and cleaning the tracks it appears the upper track (the one that mounts to the window) has a twist / bow to it. Does anyone know if this track is suppose to be straight? Also I have read to both grease the new rollers or to leave them dry? which is best. Thanks
Drifting
Joined: Oct 2007
Posts: 1,317
Likes: 22
From: Marina CA
Is your track bowed or twisted? It is bowed to match the curvature of the door but if it's twisted that will cause a bind. As stated above, white lithium grease (not overdone) is the way to go. I can't say for sure on yours but on my 68 the tracks are adjustable back and forth and in and out to get the proper glass to weatherstrip fit.
Burning Brakes
Joined: Aug 2006
Posts: 1,058
Likes: 27
From: Eastern North Carolina
The track that the window is mounted to, should be straight. Adjustment on windows is a challenge to say the least. As far as that machine gun sound it is probably a striped regulator gear. Could also be a bad motor drive gear bushing. Good Luck 
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
You should check the spring. The function of the wind up spring is to counter balance the weight of the window. If it is broken or not installed correctly, the motor has to fight the total weight of the window and will be very slow.
Thread Starter
Instructor
Joined: Dec 2005
Posts: 121
Likes: 2
From: Middletown Delaware
I ordered a good used track should be here in a couple of days. I will replace with all new rollers. Several years ago I had the machine gun sound. The gear on the regulator was badly worn. I replaced the gear and the problem went away. Thanks for all the help
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski