Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

tailpan replacement !!

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by riz, Jul 4, 2001.

  1. riz

    riz 3/4 ton status

    Joined:
    Mar 7, 2000
    Posts:
    6,026
    Likes Received:
    0
    Location:
    Wisconsin
    <font color=purple> Please help me out with as much info as you all can on this ......... I just ordered a new rear floor assembly for my Blazer and I need to know how I have to go about doing the job,,,,,,,,,,,what all has to be done to replace the rear tailpan ??? Any advise would be greatly appreciated !

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  2. Waxer

    Waxer 1/2 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    1,857
    Likes Received:
    0
    Location:
    Long Beach, CA.
    I recently replaced my tailpan due to failure. I didnt order it, I made it. Here is the directory full of pics. This will be WAY stronger than the stock design ever was.
    http://www.rockreadyk5.com
     
  3. riz

    riz 3/4 ton status

    Joined:
    Mar 7, 2000
    Posts:
    6,026
    Likes Received:
    0
    Location:
    Wisconsin
    <font color=purple> Nice job ! But the question still remains ........ I have a whole new rear floor assembly including the tailpan on order so I need to know how I go about getting the old one out and the new one in ........any help please !!!!

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  4. Waxer

    Waxer 1/2 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    1,857
    Likes Received:
    0
    Location:
    Long Beach, CA.
    Well when I took the old one out, it was spot welded to the bed and bolted to the body. So its going to be a fun job. You can locate the spot welds and drill them out. The unbolting will be pretty self explainatory. Hope this helps

    Crawlin the rocks with my K5
    <A target="_blank" HREF=http://www.rockreadyk5.com>http://www.rockreadyk5.com</A>
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,172
    Likes Received:
    1,381
    Location:
    E-town baby!
    Riz, send Boss a pm if he hasn't responded yet...I know he just did the tailpan replacement thing. AFAIK you'll have to remove the body mount bolts on the two rear most locations and loosen the next two sets of body mounts. That will allow you to jack the body up a bit for working room.
    Obviously the tailgate will need to be removed as well as the rear bumper, and I would drop the gas tank as well. Then like Waxer said you'll have to determine where the spot welds are and drill them out.

    I'm sure Boss has much more detailed pictures and advice for you.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  6. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    Well if your replacing the floor over the tail pan then take a sawszall and cut it off where it meets the up rights and cut the floor free and take it out in peices. Most of the perimeter of the floor is bolt in so it will be the easier part to replace. Now there is a ton (about 28) pinch welds accross the floor securing to the tail pan. MAJOR pain in the butt to drill out. That's why if your replacing it just hack it out. There is a weld at each corner where the bed meets the up right and one from tail pan to the up right in the back. Then there is 4 bolts each side.
    You got to get the rear of the body about 6 inches off the frame to slide the tail pan in and out. The fun part is if the truck is still on it's suspension the frame keeps wanting to come up with the body LOL. I had to high lift the body from the tail pan to get it lifted enough. What I would do is jack the body off the frame and slide a 4x4 beween the body and frame that is long enough to get under the wheel wells to suport the body. Leave the floor in to stabalize the body. Then cut out the tail pan and install the new one. Once you got the new tail pan in you can set the body back down on the new tail pan to suport the body while you replace the floor. Your going to have to loosen all the body bolts and remove the nuts on all but the foward ones to do the job. Really if you got the gear weld up a brace that will bolt into the bed rail where the top bolts down and lift it from there. Most of use don't have a A frame or lift to do it that way but it would be the easist. I did it with the 4x4 and it was a major pain but my floor was good so I had all the fun with the spot welds.
    The tail pan is the hard part of the job. once you get it in then the rest is down hill and almost bolt in. Don't forget you will need to drill some holes in the floor to spot weld the ribs of the floor to the tail pan. 2 each rib where it hits the pan is how the factory did it.
    Now I did the same as waxer. I made my own tail pan. I used c Channel instead of Box. I also made it 7 inches wide so the rear legs of my roll cage sit on it.

    It's not my damn planet monkey boy!
    <A target="_blank" HREF=http://communities.msn.com/OffroadK5s>http://communities.msn.com/OffroadK5s</A>

    Grim-Reaper
     
  7. Itali83

    Itali83 1/2 ton status

    Joined:
    Feb 12, 2001
    Posts:
    795
    Likes Received:
    0
    Location:
    Westbrook Maine
    RIZ and I are both doing the exact same thing. Thanks for the info grim. Sounds like we are in for some fun. so you need to lift the body that much to get the tail pan out??? Can I leave my top on?? I don't want to buckle my quarters or damage anything. I'm just worried about the bracing and not damaging the body part. getting the old one out won't be bad. I'll just cut it all up so I wont need to lift ip up, but getting the new one in will pose a prob. Now, the new floor looks like it is all one piece. tail pan and everything. The way you said it was that you put the tail pan in, with the old floor, got that in, then too the old floor out and put new one in?? is that the best or only way to do it. I hate to cut apart a brand new floor, but you gotta do what you gotta do. thanks
    Ben 87 Jimmy
     
  8. Boss

    Boss 1/2 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    2,550
    Likes Received:
    0
    Location:
    Maryland
    Thanks for the heads up tRusty!

    Ok, I did this on my 75 a while back, and will say, that it was a major pain in the Ahole!
    I did it differently then Grim. I also didn't fab mine up like Grim and Wax, I bought the replacement Rear Tail Pan from JCW for $109 or something.
    Anyhow, I replaced the rear part of the floor with 16gauge sheetmetal. B/c after you remove the old tailpan, you'll want to replace that part of the floor b/c the breaking the spot welds rips up the floor a little. That was a major pain. I used an Oxy-Acety torch and went to town.

    Oh, forgot to mention, remove the tail gate. I also removed the gas tank. You'll want to do that, b/c it will be in the way.
    Now, remove those two rear bolts that goes through the bodymounts and holds the bed to the frame. Then use a bottle jack with a board and jack up the bed a little.
    I didn't jack the up the body way high like Grim or anything to get the old tailpan out. Mine kinda broke off at the end so, I took them out easily. Oh, don't forget to unbolt the tailpan from the quarter panel. I think there are like 4 bolts each side.

    Now, when I put the new one in, I took my sawzall and cut the new tailpan in half. I put one half in and then the other. I then matched them back up perfectly (this is where you need to be perfect) and welded them back up. This way, I avoided jacking up the body really high.
    After that, it's all simple, bolted the new pan in. welded new metal on top. Then welded the metal to the tailpan. Made some spot welds too by drilling a small hole and welded that up, like factory.
    I think that about covers it. I do have many pics like tRusty said (b/c I plan on doing an article on this), but Zing.com, where I downloaded them is out, so I don't have these pics online, just on disk, and I don't have the disk here, so I'll have to remember to do that sometime if you would like.
    Boss

    89' 1 TON of FUN K5
     
  9. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    The floor comes with the tail pan attached?....Ohhhhh that's going to be some entertainmet I can garantee!
    If that tail pan is already welded to the floor I don't see how you will be able to do the job without taking the body off the frame. or atleast getting the rear about 8-10 inches up so you can slide the floor in over the frame. It has to go in from the bottom and were talking 6 ft of floor. No way you can do the 4x4 trick. The body will have to be lifted from above. Maybe a hoist through the top would work but I would be leary of suporting the body with the top...kind of goes agains how it was designed to work. You guys need to make a brace that bolts to the top of the bed rails and lift from there.

    It's not my damn planet monkey boy!
    <A target="_blank" HREF=http://communities.msn.com/OffroadK5s>http://communities.msn.com/OffroadK5s</A>

    Grim-Reaper
     
  10. riz

    riz 3/4 ton status

    Joined:
    Mar 7, 2000
    Posts:
    6,026
    Likes Received:
    0
    Location:
    Wisconsin
    <font color=purple> I knew I should've learned to weld ! Well, maybe now's the time...............

    Thanks for the input guys ........Boss, if you could send those pics to me it would be great !

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  11. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    I am in the process of replacing my second floor pan. It is a GM original replacement cargo floor with tailpan. I will take photos and write procedures on how to do so. The process is not hard if you have an extra set of hands. I will post everything on Sunday or Monday. If you have any ?'s before hand shoot me an email. I might write and post the procedures tommorow night.

    1987 Jimmy Sierra Classic, Palisades Park, NJ 07650
     
  12. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    Actually when the floor is out, you can spread the quater panels enough to slide the floor in. The floor will have to go in on an angle and then dropped down, this is when you spread the quarters a little.

    1987 Jimmy Sierra Classic, Palisades Park, NJ 07650
     
  13. Itali83

    Itali83 1/2 ton status

    Joined:
    Feb 12, 2001
    Posts:
    795
    Likes Received:
    0
    Location:
    Westbrook Maine
    yunit I would love pics and ad a little write up!!!!!! Any help will help. SO if you could PM a write up to me and I'm willing to bet that RIZ wants one too, it would be very much apreciated. Thanks ane please keep in touch.
    Ben 87 Jimmy
     
  14. riz

    riz 3/4 ton status

    Joined:
    Mar 7, 2000
    Posts:
    6,026
    Likes Received:
    0
    Location:
    Wisconsin
    <font color=purple> You bet your a$$ I'd like some photos and a write up ! That would be great ! Send any and all pics to kev-n-rock@pressenter.com .............

    Here we go, Ben !!!!!!!

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  15. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    I will hopefully post everything on Sunday.

    1987 Jimmy Sierra Classic, Palisades Park, NJ 07650
     
  16. Itali83

    Itali83 1/2 ton status

    Joined:
    Feb 12, 2001
    Posts:
    795
    Likes Received:
    0
    Location:
    Westbrook Maine
    Sweet yunit, you da man!!!!!! We'll be waiting. :-)
    Ben 87 Jimmy
     
  17. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    Just picked up the digital camera so everything is ready to go. Later, Pete.

    1987 Jimmy Sierra Classic, Palisades Park, NJ 07650
     
  18. riz

    riz 3/4 ton status

    Joined:
    Mar 7, 2000
    Posts:
    6,026
    Likes Received:
    0
    Location:
    Wisconsin
    <font color=purple> Sounds great , Pete !

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  19. Chief Brody

    Chief Brody Chief of Amity Police Premium Member GMOTM Winner

    Joined:
    May 18, 2010
    Posts:
    7,636
    Likes Received:
    297
    Location:
    Alabama
    Wish I could see these pictures too
     
  20. Big Ray

    Big Ray 1 ton status Premium Member

    Joined:
    May 17, 2009
    Posts:
    10,555
    Likes Received:
    681
    Location:
    Eastern NC
    :haha::haha::haha::haha::haha:



    check the date on this thread




    :doah::D
     

Share This Page