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Door hinge question

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Old Feb 10, 2014 | 07:01 PM
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Default Door hinge question

The drivers door on my newly purchased '85 cpe wants to close on it's own when on a slight incline. Is there a particular part in the hinge that is worn? Would it be in the upper or lower? Used the forum search function but didn't see a relevant answer. Thanks in advance.

THINK SPRING !!!!!!!!!!
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Old Feb 10, 2014 | 07:55 PM
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Originally Posted by skyhawk50
The drivers door on my newly purchased '85 cpe wants to close on it's own when on a slight incline. Is there a particular part in the hinge that is worn? Would it be in the upper or lower? Used the forum search function but didn't see a relevant answer. Thanks in advance.

THINK SPRING !!!!!!!!!!
The detent is in the upper hinge - if it interests you both upper hinges are identical. You can look at the right side and see the detent mechanism and how it operates and what is maybe lacking on the drivers side. You can use eBay for an image that you can "zoom" for further inspection.

The "spring" is quite obvious!
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Old Feb 10, 2014 | 08:07 PM
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Originally Posted by skyhawk50
The drivers door on my newly purchased '85 cpe wants to close on it's own when on a slight incline. Is there a particular part in the hinge that is worn? Would it be in the upper or lower? Used the forum search function but didn't see a relevant answer. Thanks in advance.

THINK SPRING !!!!!!!!!!
That has been my experience
on most GM vehicles I've owned. 1995 Vette and 1986 & 1993 Z28.
Doors seem to want to close on their own on any slight incline. Have gotten my leg caught a few times.
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Old Feb 10, 2014 | 08:35 PM
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Originally Posted by WVZR-1
The detent is in the upper hinge - if it interests you both upper hinges are identical. You can look at the right side and see the detent mechanism and how it operates and what is maybe lacking on the drivers side. You can use eBay for an image that you can "zoom" for further inspection.

The "spring" is quite obvious!
The spring is what usally give out they are cake walk to replace about 10 min at most. If the detent bar is gone it is a little more involved. And yes the door should hold at just about any incline
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Old Feb 10, 2014 | 08:51 PM
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Originally Posted by hooked073
The spring is what usally give out they are cake walk to replace about 10 min at most. If the detent bar is gone it is a little more involved. And yes the door should hold at just about any incline
I don't believe you're very well acquainted with the Corvette C4 upper door hinge. The "spring" isn't a piece of cake. The detent is actually created by two "notched rollers" on the hinge half and when the door is opened the detent rollers rotate to a position somewhat surrounding the detent spring creating the detent. If the spring is there I'd think one or maybe both of the "notched rollers" are missing or damaged.
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Old Feb 10, 2014 | 10:16 PM
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I stand totaly corrected. I was thinking os the valve spring type of door hindge. Thanks wvzr for correcting me. And sorry for the wrong infornation
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Old Feb 11, 2014 | 05:16 AM
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Not sure if this will help but I went through this about a month ago and did all four hinges:

http://forums.corvetteforum.com/c4-t...his-a-try.html

Visually check your bushings for free play or spin when you open the door. They are supposed to stay planted. Virtually all of mine spun in the bore with the old pin and bushings. Once I replaced them with a new pin and snug bushings, the doors opened and closed like brand new. Also, check to see if your hinges with springs installed are located up top. My old Vette had a few repaints, and I think whoever did it took off the doors and installed the hinges with springs on the bottom, making for a loose door that closed on its own on the slightest incline.

I didn't even know until a few months ago researching hinge repair. I noticed all the pictures of C4s with hoods open had the springed hinges on top.
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Old Feb 11, 2014 | 10:31 AM
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Originally Posted by 1985 Corvette
Not sure if this will help but I went through this about a month ago and did all four hinges:

http://forums.corvetteforum.com/c4-t...his-a-try.html

Visually check your bushings for free play or spin when you open the door. They are supposed to stay planted. Virtually all of mine spun in the bore with the old pin and bushings. Once I replaced them with a new pin and snug bushings, the doors opened and closed like brand new. Also, check to see if your hinges with springs installed are located up top. My old Vette had a few repaints, and I think whoever did it took off the doors and installed the hinges with springs on the bottom, making for a loose door that closed on its own on the slightest incline.

I didn't even know until a few months ago researching hinge repair. I noticed all the pictures of C4s with hoods open had the springed hinges on top.


the bushing on mine were worn along with the pins. D S door had to lifted to even shut.

changing the bushings and pins in both doors helped the problem you see, and closing-opening- fitment problems on mine.
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Old Feb 11, 2014 | 04:28 PM
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Well the outside temps got above 20 degrees, Went out and checked both doors and discovered the drivers door hinge spring is no longer an "S" but more like a "J". The two rollers that the spring is supposed to ride against are "present and accounted for" Should be a fairly easy fix.

Thanks for the replies.
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Old Feb 11, 2014 | 06:13 PM
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I'm not sure if the springs they advertise for the 1963-82 models would also serve as a direct replacement. WVZR1 will probably be on point with the correct part number.
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Old Feb 11, 2014 | 06:58 PM
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I checked a few of the popular suppliers and they show the same part for 84-96. Big problem is shipping. Average shipping is 8 bucks for a 15-20 dollar part. May wait until I need a few more bits and then take advantage of a free shipping offer. Probably won't buy the 11 dollar tool, I'll improvise.
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Old Feb 11, 2014 | 07:20 PM
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Originally Posted by skyhawk50
I checked a few of the popular suppliers and they show the same part for 84-96. Big problem is shipping. Average shipping is 8 bucks for a 15-20 dollar part. May wait until I need a few more bits and then take advantage of a free shipping offer. Probably won't buy the 11 dollar tool, I'll improvise.
Verify that the spring is the same diameter when you get them along with the distance of the bends that make the "S"...which is critical. Also..making a tool is fine...and they are FUN to get in...versus that of the C3 hinge springs. There is a fine line on how you have to have the door open and such to get them in without damaging your paint, etc.

DUB
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Old Feb 11, 2014 | 07:44 PM
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a hefty craftsman flat head bent at the right angle will do the same job the "special" tool will. At least one of your local auto part stores should stock them as well ready to use.
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Old Feb 12, 2014 | 06:09 PM
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Originally Posted by 1985 Corvette
I'm not sure if the springs they advertise for the 1963-82 models would also serve as a direct replacement. WVZR1 will probably be on point with the correct part number.
63-67 do not have springs or the detents like the 68-82 hinges....and the 1968-82 springs are NOT the same. The springs for the hinges are specific for the 84-96 era. Bends are completely different.

DUB
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Old Feb 12, 2014 | 06:14 PM
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Originally Posted by DUB
63-67 do not have springs or the detents like the 68-82 hinges....and the 1968-82 springs are NOT the same. The springs for the hinges are specific for the 84-96 era. Bends are completely different.

DUB
Got me on that one. 63-67 is the coil style....forgot that. Thanks for clarifying the bends on the 68-82 springs.
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Old Feb 12, 2014 | 06:41 PM
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Originally Posted by 1985 Corvette
Got me on that one. 63-67 is the coil style....forgot that. Thanks for clarifying the bends on the 68-82 springs.
63-67 does NOT have a coil spring either. They have a tension clip (so-to-speak) that contact the hinge arm on the top and bottom when the door is opened. and holds it position.

DUB
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