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  1. #1
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    Default L81...Back to stock

    ok, here's what I've got:

    L81 w 53,ooo miles
    1. Headers with no O2 bung. Connector wire hanging in engine compartment.
    2. Aftermarket air cleaner. I have the original air cleaner but will need the plastic intakes in front of radiator and on the side.
    3. EGR does not have vacuum line hooked to it.
    4. electric choke is being held open. (with a wire...you have to see a picture of that.)

    The car runs fine but I know it will run better if I fix this stuff. The question is where do I start? I would assume that I would start with the O2. Any opinions you have would greatly be appreciated!
    Thanks!
    Todd

  2. #2
    Moderator bill81vette's Avatar
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    IF you want to put the 81 back to stock,you will need a set of the
    exhaust manifolds...these were a one year item,they can be had but they are rare....or you can have a fabricator/welder drill a hole and weld a nut on the headers to get the O2 sensor to work.

    air cleaner parts can be had from most of the corvette parts houses.
    if you have a service manual or AIM (assembly instruction manual)you can find out where the vacuum line is coming from to reconnect it.
    is the electric choke parts even there?????
    if you have any more question don't hesitate to ask!!!!
    Bill and Gail...save the wave
    NCRS member 42415
    1981 St.Louis car #2735
    all matching numbers

    born Sept 18,1980
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  3. #3
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    Default

    The electric choke parts are there. Maybe I just need to replace the choke. I will keep my headers so I will try to find somebody to weld in a bung for me. After that I should be able to plug that right in. I am wondering though, since the carb has been adjusted to run without the O2, will I end up having to tune the car again? I'm new to all of this and learning as I go. I will be ordering the rest of my parts to complete the air cleaner assembly. I've been told by many that the original is way better that the aftermarket air cleaners. Any help you can give me would be great.
    Thanks!
    Todd

  4. #4
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    Default

    btw...my car is very close to yours. My number is 03368. I think it was made in September 80 as well but I'm not sure.
    Todd

  5. #5
    Moderator bill81vette's Avatar
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    Quote Originally Posted by Moser28 View Post
    btw...my car is very close to yours. My number is 03368. I think it was made in September 80 as well but I'm not sure.
    Todd
    do you know how to read the date code in the door jamb plate???
    Bill and Gail...save the wave
    NCRS member 42415
    1981 St.Louis car #2735
    all matching numbers

    born Sept 18,1980
    Cruisefest 2008
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    Cruisefest 2010
    Cruisefest 2011
    Cruisefest2012



    Without Trucks......
    You would be Hungry,Homeless and Naked!!!!!!



  6. #6
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    Are you talking about the plate on the body or sticker on the door? I also have the original window sticker.
    As far as my O2 is concerned, I am having problems finding someone to weld a bung in for me because my car doesn't have cats and nobody will work oanything related to the exhaust. I may put cats back on in the future but I want to take care of this first.

  7. #7
    Moderator bill81vette's Avatar
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    inside the drivers door,on the front of the body,there is a metal tag affixed to the body with the date code of when your vette was built.
    Bill and Gail...save the wave
    NCRS member 42415
    1981 St.Louis car #2735
    all matching numbers

    born Sept 18,1980
    Cruisefest 2008
    Cruisefestous 2009
    Cruisefest 2010
    Cruisefest 2011
    Cruisefest2012



    Without Trucks......
    You would be Hungry,Homeless and Naked!!!!!!



  8. #8
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    September 23, 1980, Tuesday.

    Thanks for the info!

  9. #9
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    I have the air cleaner plastic parts, let me know if you are interested. I also have a carb, but not sure if I want to part with it yet. I could probably be persuaded into it, though...lol
    Bob

  10. #10
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    Default Headers

    Two things:
    1. Can you take one of the headers off and then take to a shop for the O2 bung welded job?

    2. The original O2 sensor most likely will not work in the header collector due to heat loss. You may have to go to a heated or four wire O2 sensor.

    Also, if the carb has been replaced, has the distributor? If so, then I doubt the CCC system is connected and connecting the O2 sensor is worthless as there is nothing the CCC will be able to adjust.

  11. #11
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    I have removed the header and I have someone welding a bung for me. The carb is original and really only needs a new choke. The distributer is new and correct for the CCC. Where is a good place for E4ME carb parts?

  12. #12
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    Quote Originally Posted by Moser28 View Post
    I have removed the header and I have someone welding a bung for me. The carb is original and really only needs a new choke. The distributer is new and correct for the CCC. Where is a good place for E4ME carb parts?
    I have used two places in the past. I just did a google search on E4ME and found several places that had parts. The most recent was a guy off of ebay...again do a search for E4ME, he is the retired carb rebuilder one, slow to answer email, but good prices on parts. Best to call him...actually his wife answers the phone.

    Would like to see a picture of that electric chock with the wire.....

  13. #13
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    ok...here is the way I found it.

  14. #14
    L81...Back to stock GerryLP's Avatar
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    Quote Originally Posted by Moser28 View Post
    ok...here is the way I found it.
    Todd,

    The wire for the choke actually crosses over from the driver's side of the car on the inner fender. It is green, and has a funky connector at the end. If you find the wire, but do not find it with a connector, then order Ac-Delco P/N PT102 or GM# 12085480. It comes with a pigtail that should help you reach the choke.

    Perhaps all that it is wrong with the choke is that the heating wire (the green cable I just mentioned) is not connected?

    p.s. It looks from the image that the choke element was perhaps replaced once at least.
    GerryLP

  15. #15
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    Your information is very helpful. I am somewhat new to all of this but I have decided I can do anything I need to do to this car myself, I just need the right information and direction which this forum is the best for that. Anyway, I did some digging and found these two wires. The green one that you spoke about and a black one with a green stripe. I don't know what that one is for. Why would these be disconnected anyway?
    Thanks!
    Todd

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