1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

remove exhaust and intake manifold

Discussion in '40- & 55-Series Tech' started by chaka, Feb 21, 2007.

  1. chaka

    chaka

    Messages:
    195
    Likes Received:
    0
    Joined:
    Apr 16, 2003
    Location:
    Washington DC
    Hello all,
    I am finally finding time to push forward with replacing my exhaust. I am removing the manifolds to have them milled, as well as to gain access to a sheared off exhaust pipe stud.

    That being said, I have removed the carb, EGR and Gulp valve. I have also removed the 4 nuts that hold the manifolds on to the block. In the picture I have circled two of them.

    Should this thing pull right off? I don't know how long it has been since it was last off the block, but I am having trouble getting it off and have only used a rubber mallet to whack it a few times to try and free it up. No luck.


    any suggestions? I am so close to getting this thing off and being able to drive this rig!
    CU exhaust manifold copy.jpg
     
  2. Degnol

    Degnol

    Messages:
    8,121
    Media:
    16
    Albums:
    1
    Likes Received:
    16
    Joined:
    Jan 22, 2003
    Location:
    Kansastitty
    How many nuts/fasteners have you removed? I count 8 if you include the bolts on the ends.

    Ed
    2F 001.jpg
     
  3. chaka

    chaka

    Messages:
    195
    Likes Received:
    0
    Joined:
    Apr 16, 2003
    Location:
    Washington DC
    so is it safe to assume there are 4 above and 2 at the end and 2 below? I think my ends aren't there...so that may leave 2 more below... any tricks to getting to these?
     
  4. Degnol

    Degnol

    Messages:
    8,121
    Media:
    16
    Albums:
    1
    Likes Received:
    16
    Joined:
    Jan 22, 2003
    Location:
    Kansastitty
    Socket and extension. I run a header, but in my case I put the socket on the nut then attach the extension and ratchet. The socket will not fit between the intake and the header.......IIRC. The ends are used with a header and certain manifolds, but many exhaust manifolds do not have a provision for fasteners at the ends, maybe just later ones?

    Ed
     
  5. Nomis

    Nomis

    Messages:
    1,191
    Likes Received:
    17
    Joined:
    Feb 12, 2004
    Location:
    Tampa
    Showoff. . . .
    That thing running yet? :flipoff2:
     
  6. Degnol

    Degnol

    Messages:
    8,121
    Media:
    16
    Albums:
    1
    Likes Received:
    16
    Joined:
    Jan 22, 2003
    Location:
    Kansastitty
    Yup. Old, often-posted pic. But it does show the studs nicely:D

    Ed
     
  7. IDave

    IDave

    Messages:
    7,167
    Media:
    1
    Albums:
    1
    Likes Received:
    23
    Joined:
    Jan 3, 2003
    Location:
    McCall, ID
    Ed's a studly kinda guy.


    Likes to show his studs.
     
  8. Degnol

    Degnol

    Messages:
    8,121
    Media:
    16
    Albums:
    1
    Likes Received:
    16
    Joined:
    Jan 22, 2003
    Location:
    Kansastitty



    I offer to show my studs all the time, but the number of takers is dwindling:frown:


    ed
     
  9. chaka

    chaka

    Messages:
    195
    Likes Received:
    0
    Joined:
    Apr 16, 2003
    Location:
    Washington DC
    Ok. So thanks to the studly diagram I have removed the 2 remaining nuts underneath the intake manifold. Now I was trying to get the manifold assembly off, but I have one final pipe running from the cooler to the intake. Anyone know what size the connection is? seems to be bigger then anything i've got other than channel locks, and I don't want to strip it.

    it is #2, #27 on this page, and mine is assembled the way the inset is next to the pipe diagram (2 ends both screw in instead of connecting via a flange of sorts.


    http://www.sor.com/sor/cat047.tam?xax=16423&page.ctx=cat047.tam

    so can anyone advise?
     
  10. Fast Eddy

    Fast Eddy

    Messages:
    14,297
    Likes Received:
    1,969
    Joined:
    Apr 5, 2006
    Location:
    Morgan Hill, CA
    Pull off the whole EGR assembly by disconnecting 10, 12 and the whole #7.

    [​IMG]
     
  11. chaka

    chaka

    Messages:
    195
    Likes Received:
    0
    Joined:
    Apr 16, 2003
    Location:
    Washington DC
    Fast Eddy,

    My assembly doesn't have a #12. it has another 27 on the veritcal connection... i was curious if anyone knew the size of it... or if the manifolds could comea part with it still attached?
     
  12. kulangot

    kulangot

    Messages:
    1,731
    Likes Received:
    112
    Joined:
    Apr 15, 2003
    Location:
    Los Angeles California
    Try an impact "wobble" socket.

    1/2 inch snap on version will run you about 45 bucks and is a pleasure to use even if you don't have an impact gun (yet). Matco is cheaper but Snap-On is better (I have both).

    -Stumbaugh
     
  13. Pin_Head

    Pin_Head

    Messages:
    14,348
    Likes Received:
    1,942
    Joined:
    Feb 6, 2002
    Location:
    OC, CA
    Just remove the bolts holding the EGR cooler to the block and remove the entire manifold assembly as a unit. If you need to fool with the EGR plumbing, you can do it with the manifold out so that you have room to work on it.
     
  14. snailwagon

    snailwagon

    Messages:
    1,042
    Likes Received:
    3
    Joined:
    Jun 11, 2004
    Location:
    high desert, ca
    1974 had a different attachment to the exhaust manifold than depicted in the SOR diagram. I think it is a 23mm nut or something. At the least, use a large crescent wrench.

    Take a ruler and measure it, most cruiser bolts/nuts in that range varied by 2mm increments.

    Do you really need an EGR?
     
  15. Waorani

    Waorani

    Messages:
    406
    Likes Received:
    7
    Joined:
    Jun 7, 2006
    Location:
    Auburn, AL
    I'm getting ready to stick my intake manifold and new MAF headers on. Exclusive of the two end bolts I think originally there were only 2 studs and the remaining 4 were bolts. I like studs better - any reason not to use studs on all 6 ?
     
  16. mr_manny

    mr_manny

    Messages:
    1,655
    Likes Received:
    12
    Joined:
    Apr 10, 2004
    Location:
    san pancho, ca
    I'm using studs, they are still available from toyota for a few bucks a peace...

    [​IMG]