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1/2/04 5:35pm - Original Message: '1980 SEAT BACK ADJUSTMENT'
Jimmy
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ZIEGLERVILLE, PA - USA

Vette(s):
1968 Ralley Red Convertible 327 / 350 4 Speed

Joined: 11/29/2001
Posts: 66
I recently purcased my second C3 |bouncy| It's a red 1980 L82. It runs great and I am very happy with it |thumb| My question is : how do you adjust the seat back to a more upright position ?? |headscratch| |headscratch| I know that the older C3s have a bolt or two at the bottom of the seat back and you can just turn the bolt(s) in or out to bring the seat back more upright. But I've looked all over the bottom of the seat back on the '80 and don't see anythimg that looks like an adjustment. The owners manual talks about moving the seat forward and backward, but it doesn't address adiusting the seat back at all. Could it be that there are no provisions for adjusting the seat back ?? |headscratch| |headscratch| |cussing| If anyone out there has an '80 and can give me an answer, I sure would appreciate it. Thanks.
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1/2/04 9:28pm - Reply: '1980 SEAT BACK ADJUSTMENT'
Sarge81 Lifetime Member
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WEST SENECA, NY - USA

Vette(s):
1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.

Joined: 12/3/2001
Posts: 2377
Hi Jimmy!
I have an '81, which have basically the same seats as '80,'82's. As of tonight I have completely dismantled my drivers side seat. I'm doing a total re-do and changing the color. I see no adjustments for the seat backs. Did you look at your seat hinges behind the plastic covers w/ the little chrome acorn nuts? Check to see if the hinges are sloppy or if they are bent back. If they look ok then you will have to pop the seat cushions out to expose the screws that secure the hinges to the seat shells. Remove a couple screws to see if the hinge alignment holes in the seat shells are oblonged. Then let us know what you find out. BTW, is your drivers seat a 6 way power seat?
Sarge |cheers|

|UPDATED|1/2/2004 6:28:29 PM (AZT)|/UPDATED|


____________________________________

GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


Lifetime Member #26
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1/2/04 10:26pm - Reply: '1980 SEAT BACK ADJUSTMENT'
midlifevet
Former Member
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Yardley, PA - USA

Vette(s):
1979 Coupe

Joined: 12/5/2003
Posts: 7
I have a 79 with the same issues, the seat back leans too far back, and I could not find any adjustment. If you find anything with the seat disassembly please let me know also
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1/6/04 10:36am - Reply: '1980 SEAT BACK ADJUSTMENT'
Diamondback
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Spring, TX - USA

Vette(s):
80L-48

Joined: 10/20/2003
Posts: 44
I just pulled the seats out of my 80 last week and i don't see any seat adjustment , except foward and back.I don't think they spent much time on designing a comfy seat for those year vettes. I can't seem to find any seat backs for an 80 either.Would anyone know if the seat backs are the same as the 79's? |ohwell|
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1/6/04 4:41pm - Reply: '1980 SEAT BACK ADJUSTMENT'
chesh
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Edgewood, KY - USA

Vette(s):
1981, Black/Black, Engine bumped to about 400HP.Ext/int mostly stock.

Joined: 10/26/2003
Posts: 339
I just completely refurbished my '81 seats. There is no intentional adjustment mechanism. When metal hits metal in the hinge, the seat is in it's normal position. Two ideas that may help a little, if you want to invest some time:
1) If you could live with a little less tilt to the seat bottom as well, how about putting small shims between the rear seat posts (where they bolt down) and the floor board?
2) Pop off the plastic hinge covers, remove the seats cushions, loosen the bolts that attach the hinges to the seat buckets. Mine had some wiggle-room, so I pushed the hinge in the direction that would provide the most upright position and then retightened the bolts. My guess is the bolts will loosen enough over time that the hinge position will go back to where it was, but it may help for a while...

____________________________________
'81 Black on Black. Best picture I could get on a gloomy winter day in Northern KY.

(click to see a larger version)
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9/8/14 10:29pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
SMP
Former Member
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Winchester, MA - USA

Vette(s):
1979 L48

Joined: 9/8/2014
Posts: 2
I have a 1979.  The seats don't come with any way to adjust the back to make it more upright. The seats are not comfortable the way they came from the factory. Several owners have suggested ways to make the back more angle forward by putting shims under the rear screws holding the bracket to the floor. However,  I just made a small modification to my seats that made a huge difference.  The fix to the problem involves drilling a small hole on each side of the seat frame just below the hinge between the upper and lower sections of the seat back.  If you tilt the seat back forward slightly you can see where the area just below the pivot point. The base section of the seat has an outer and inner part to the metal frame.  In between the outer and inner part of the lower frame is a flat piece of metal that is part of the upper part of the seat.  As you tilt the seat back forward you see the middle piece move between the two fixed parts of the lower frame.  The idea is to drill a hole through the outer and inner frame of the lower part just in front of where the metal piece of the upper segment is when the seat back is in the upright position you want.You don't even need to remove the plastic covers over the hinges to do this.   You then put a pin or screw through the two holes when the seat back is tilted forward.  You do the same thing on both sides of the seat.  When you tilt the seat back up the pins on both side limit how far the seat back tilts back .  You have to take the seat out of the car to get to the inner side of the seat.  I was concerned that it would be difficult to drill the metal.  However, my 18 volt rechargeable drill with a new bit had no problem drilling through the metal seat frame.  The plastic pieces on the side of the hinges won't line up exactly the way the do when the seat back is in the factory position.  However, this is barely noticeable.  You also can still tilt the seat back forward if you do this. This fix really makes a huge improvement in the comfort level of the seats.  
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9/9/14 7:47pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4401
I made nylon spacers for mine they screw to center of bottom seat back frame, top frame sits on top of spacer.. I made them in three pieces so you can adjust the angle of recline.
ebo


____________________________________

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LIFETIME MEMBER 151
Evil Smileebo
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9/9/14 8:36pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
dads2vette Lifetime Member
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Ash Fork, AZ - USA

Vette(s):
1981 Red Interior White exterior

Joined: 4/18/2007
Posts: 1046
ebo said: I made nylon spacers for mine they screw to center of bottom seat back frame, top frame sits on top of spacer.. I made them in three pieces so you can adjust the angle of recline.
ebo


Ebo showed me his and I stole the idea from him to make mine.  I used wider pieces of nylon, maybe 1"x7" and laid them on top of the seat portion of the back.  I attached to lips to hold it in place so that it wouldn't slip off.  I didn't trust my seatbacks to not disintegrate when I try to screw them in.  If it holds up great, if not I'll just get a thicker piece of nylon and carve out an area for the spacer to fit over the lower seat back. 

____________________________________
Dave C..........My mantra: I can not be bought!!      Long and short term leases available.
In the words of Zora Arkus-Duntov "Is your seat belt fastened? Alright, Let's go"


Yeah, I know, Shut up Dave.
Lifetime Member #192


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9/12/14 8:08pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
nevr2ol
Former Member
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Pensacola, FL - USA

Vette(s):
76, 4 speed, engine built to 375 hp.

Joined: 5/9/2014
Posts: 35
Personally, I like some of the ideas. I have 80 seats in my 76 and had the same problem. I finally got some wedge shaped foam and put behind the seat. I actually kept putting vinyl note books behind the seat until it felt right and got that thickness of foam. It cannot be seen unless of course you fold the seat forward. 

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7/15/15 1:51pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
TheOpenRoad
Former Member
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, - United Kingdom

Vette(s):
1978 C3 Special Edition Indy Pace Car

Joined: 7/15/2015
Posts: 6
This a reply to SMP entry of 9/9/14
Do you have any pictures of what you did?  I have a 78 Pace Car and feel that the seat back is too far back.
Whatever I do has to be very robust and safe as I rent the car out.


|UPDATED|7/15/2015 10:51:51 AM (AZT)|/UPDATED|


____________________________________
Tony Merrygold, The Open Road
Warwick, England

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7/15/15 7:10pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
SMP
Former Member
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Winchester, MA - USA

Vette(s):
1979 L48

Joined: 9/8/2014
Posts: 2
/member_uploads/29901_30000/29912/2618B_IMG_2103.JPG

Hi-I actually modified the passenger seat differently than the driver seat.  I think this method is better than the method I outlined above but takes a little more time. The new method is more "robust" than the other technique.  Both techniques work really well and the seats are much more comfortable.  The technique involves a spacer that conforms to the shape of part of the hinge and separates the top and bottom parts of the hinges where they contact each other.  I actually used a very large picture hook that I had and bent it to conform to the shape of the hinge. The picture hook worked well because the metal was fairly pliable but also thick. I then fastened the spacer on each side to the upper part of the hinge with a small screw. Now when the seat back is upright the upper and lower parts of the hinge are separated by the space which chafes the angle of the seat back.  A relatively thin peace of metal changes the angle of the upper part of the seat a fair amount.  You can't see the spacer since it gets covered by the decorative plastic hinge cover. The attached photo hopefully will help.  The trick is to patiently bend the metal with 2 pairs of needle nose pliers to get the metal to approximate the curve of the hinge.
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7/16/15 3:59am - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
TheOpenRoad
Former Member
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, - United Kingdom

Vette(s):
1978 C3 Special Edition Indy Pace Car

Joined: 7/15/2015
Posts: 6
Great Thank. I'll try and find time to have a look at it over the weekend.

____________________________________
Tony Merrygold, The Open Road
Warwick, England

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7/24/15 1:08pm - Reply: 'Re: 1980 SEAT BACK ADJUSTMENT'
maierar
Standard Member
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Southampton, NY - USA

Vette(s):
1980 dark blue metalic T-top coupe 2003 50th anniversary convertible

Joined: 7/12/2006
Posts: 17
I have the same problem on my '80.  I split a length of thick-walled hose lengthwise and put it over the lip that the seat back touches.  It is much better now and it can easily be removed.
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