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Removal of Air Smog system 87 v30 454 4BRL Carb

Discussion in 'Engine & Performance' started by Patrick Majers, Oct 24, 2020.

  1. Patrick Majers

    Patrick Majers Junior Member

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    Hi all, Im pretty new to the carbureted engine world, and have developed a rusted out tube that is connected in 4 spots on my drivers side exhaust manifold. I have a 1987 V30 with a 454 4 barrel carburetor. After a little research, I have found that it is apart of a smog system that most people seem to remove, so I was wondering what all I go through to remove that entire system. Basically all that I know is that I pulled the drivers side tubes off of the other 3 ports into the manifold, so I will have to pull the other side and weld those holes shut on the manifold. My truck is a plow truck, so everything is rusty as hell, so unscrewing those nipples isn't an option. This truck also has 2 air pumps that I need to remove, so I went ahead and removed the top one, and a couple of the obvious lines. Now i'm at a bit of a standstill, so any help you guys can provide would be much appreciated!
     
  2. bucket

    bucket Super Moderator Staff Member

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    You can remove both pumps, the associated hoses and also the secondary charcoal canister if it's still there. Replace the alternator belt with Dayco# 5060530.
     
  3. Patrick Majers

    Patrick Majers Junior Member

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    You have any pictures? Im heading to my shop now to post pictures of what I have done so far


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  4. AuroraGirl

    AuroraGirl Supporting Member Supporting Member

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  5. Patrick Majers

    Patrick Majers Junior Member

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    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    I have marked with an X what else i am taking out. Once those items are removed, and I weld the exhaust manifold holes shut, i am basically unsure of what else needs to be removed/ done. FYI, i am trying to get the nuts removed from the manifolds, so i can screw in a pipe plug, before i am resulting in welding them shut.


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  6. Patrick Majers

    Patrick Majers Junior Member

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    [​IMG]
    This is everything I have removed so far


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  7. bucket

    bucket Super Moderator Staff Member

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    That other air pump is about all you have left.

    This is everything I removed:
    20200803_213606.jpg

    I wouldn't throw the parts out either. The reason I had that picture handy is because recently I had come across a fella in Colorado that needed those parts. So they are in Colorado now and will be used again.
     
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  8. Patrick Majers

    Patrick Majers Junior Member

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    Why did you remove that other steel filter? Also, I would like to know what to remove on this diagram.[​IMG]


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  9. bucket

    bucket Super Moderator Staff Member

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    I removed the flame arrestor (pretty sure that's what it was anyway) because it seemed restrictive. The butt dyno confirmed it.

    I only removed the stuff 100% directly related to the smog pumps. The engine ran great and I didn't see the need to remove anything else.

    On my '84 (small block then) though, I removed every last scrap of uneeded underhood hoses and valves. It was all a cobbled mess in that case. I plumbed in a PCV valve, spark advance, brake vacuum and hvac supply. Those last two are not needed on a non-ac truck with hydroboost brakes.
     
  10. Patrick Majers

    Patrick Majers Junior Member

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    So the thing inside the actual filter is the flame resistor? And you left the parts on each exhaust manifold??


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  11. bucket

    bucket Super Moderator Staff Member

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    Yes, I left the injection lines in place but they were in good condition. I only crimped the main inlet closed to prevent minor exhaust leaks. I would have removed them too, but they were seized in the manifolds.
     
  12. Vbb199

    Vbb199 B-rate Hillbilly Customs

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    Holy vaccuum hoses batman! Wow! Lol
     
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  13. bucket

    bucket Super Moderator Staff Member

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    This is kinda funny.

    Pre-smog '78 (AC pump not installed though):
    20191201_093218.jpg

    '86 height of smog:
    2020-08-03_12-53-47.jpg
    2020-08-03_12-54-41.jpg

    ^^It was frustrating just to check/add oil. Let alone replace a thermostat or change the plug wires.
     
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  14. Patrick Majers

    Patrick Majers Junior Member

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    Both sides on mine were rusted out, so i just ripped them off, and broke the nut off with my breaker bar, then i plan on welding the holes shut. Does that sound sufficient?[​IMG]


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  15. Patrick Majers

    Patrick Majers Junior Member

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    And then any of the vacuum lines that came off of the pumps, I will trace back to a T, or wherever it enters something, and cap it off. And any electrical plugs that i disconnected, I will just leave and wrap in electrical tape. Please comment anything else I am missing, or if I should do something differently. Wont be working on this again til Friday since I’m waiting on a water pump. Should also give ample time for others to see this post.
     
    Last edited: Oct 26, 2020

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