Sunroof Drain Fix

Discussion in '80-Series Tech' started by JerseyCruiser, Oct 7, 2007.

  1. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    There are many out there including myself that have had the misfortune of wet carpets and drowned out rockers due to blocked sunroof pan drains and or blocked slit drains in the rocker cavity. Unfortunately for what ever reason Toyota decided to let the spill over water along with whatever debris to empty into the rocker cavity leading to soaked carpets and more importantly the malignant creep of rust. I have devised a way for the sunroof to drain to the outside of the vehicle instead of the rocker by extending the drain tube and having it exit through the first drain plug in the rocker.

    1- Remove the inside molding/kick panel from the PS and DS and the first drain plugs on both sides.

    2- Pull out the black vinyl hoses inside the body cavity they are behind the wires that are stuffed in there. NOTE use some work gloves I cut my finger on some of the sharp edges inside that cavity, also DO NOT pull down hard on the drain tube if it pops off the sunroof pan shame on you!

    3- I used a hard 1/8 plastic water line to snake from the drain plug to the opening in the kick panel to use as a guide to push the the drain tube extension on. When the guide is snaked up from the bottom it will be in the small space next to the door hinge not the space where the tube normally drains I tried but was unsuccessfully.

    4- I purchased some black vinyl hose from Home Depot with a an outside diameter of 5/8 and an inside diameter of 1/2 which slips perfectly into the existing drain tube.

    5- The 5/8 hose fits snugly in the round rocker drain hole, I used lots of dish soap to help it along the way. Its a bit tricky it helps to pull the guide while pushing the new tube from the bottom.

    6- When you have the new tube extending from the rocker drain to the kick panel opening you are going to glue them together with PVC cement make sure both tubes are cleaned with PVC primer. Push the the 5/8 hose into the existing drain as far as you can and inch or two will be fine.

    7- After the cement has cured you are going to pull the slack out of the tube so its straight and not kinked.
    Some tips:

    Use plenty of soap while pulling the tube back down and it helps to push it from the top at the same time. If it gets stuck push it back up and add more soap don't keep pulling.

    Make sure that the tube is in the corner of the of the body cavity towards the outside of the body because its wider, you can feel it with your finger. The DS pulls down easier then the PS

    8- After the hose is straight you can trim the excess off leaving a few inches extending down.

    You are done! If your drain tubes get clogged you can simply push some string trimmer line completely through them to dislodged and debris. I would not block up the rocker drain slits but make sure they are unclogged to let any condensation drain through them. I'm going to spray some Eastwood Rust Encapsulator inside the rocker the best I can followed up with some of their Anti-Rust spray.

    :cheers:
    George
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    Last edited: Oct 7, 2007
  2. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    ...
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  3. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    ,,,
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  4. sandcruiser

    sandcruiser

    Messages:
    3,622
    Location:
    San Francisco, CA
    thanks for posting. good idea. I think that I'll leave a little less than 2 or 3 inches hanging out- for aesthetic's sake- but like the idea of offering the drain a better place to go than inside the rocker.

    And the tube should help prevent too much water/dirt from entering the panel from below as well.
  5. gray

    gray

    Messages:
    1,450
    JerseyCruiser;
    can you post a few more photos from further back and/or wider angle to give us spatially challenged
    a better idea of where you are working, etc.
    Thx
    g
  6. gray

    gray

    Messages:
    1,450
    Not to hijack the thread, but maybe Jersey Cruiser can give an opinion on
    cleaning the drains (this has been covered before; just asking)
    when attempting to clean the drain tubes, can you screw things up by using compressed air? Like blowing the tubes off their connection points? I believe most have suggest using some sort of wire.

    g
  7. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    Glad to see some interest in my mod! I have mentioned above that from the sunroof you can fish a piece of line from your string trimer aka weed wacker to clean them out. It goes in easy up until the last foot or so then it gets hard to make the last bend with a little work I have gotten it all the way down. I don't think you will ever need to unclog them again and that was the main purpose of routing them to the outside, besides rusting your rocker out. What part do you want more pictures of?
    Last edited: Oct 24, 2007
  8. gray

    gray

    Messages:
    1,450
    I think I figured it out, I am slow sometimes;
    you were working on the front drain lines that come down the A pillar, is that correct?

    There are two more that come down inside the B pillar; correct?

    G
  9. 40thEd

    40thEd

    Messages:
    15
    Location:
    Republic of Masachusetts
    After pulling out the whole interior sans dashboard and door panels, and having my 2 sons stand by to look where the leaks were coming from, I found the front passenger's drain was clogged by a spider egg nest about 1 inch down. I cleared it with an 8 inch long cable tie and checked it by blowing (by mouth) through the tubes. I should have checked the drain tubes before pulling the interior, as I should have known the leak could not have been the poor quality/busted roof rack.

    2 lessons: 10 year old drain tubes don't taste too good, and the previous owner loved McDonald's French Fries and Andes mints.
  10. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    Correct, they are the front drain lines that are inside the A pillar the rear drains are inside the C not the B pillar.
  11. zcruiser

    zcruiser Needs monitoring

    Messages:
    1,182
    Location:
    Hillsborough, NC
    Jersey, that is an awesome solution, thanks for the DIY and photos.

  12. gray

    gray

    Messages:
    1,450
    Ok,
    Now wondering how my DS seat belt gets damp after a hard rain?
    I thought the drain went down the B pillar; someone said
    overflow could do it.

    g
  13. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    Yes your front belt will/can get wet from overflow if its excessive especially if you have the one piece molded headliner.
  14. gray

    gray

    Messages:
    1,450
    That must be it; I do have the one piece molded headliner(is there
    another type?);
    Why would the headliner make a difference in how the water drained??

    Will have to get some weedwacker nylon

    g
  15. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    The headliner does not affect how the sunroof drains it only affects where you will see the leak 1991-94 have a suspended headliner that has a vinyl backing and is stitched together. The leaking sunroof on your 80 will spill over and pool up on the headliner then drip along the B pillar and above the DS door, they older style will leak at a seam above the of $hit handles on the A pillar.
    Last edited: Jan 14, 2008
  16. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
    Here are some more pictures of were the drains exit the rocker, and the access hole with the PS kick panel removed.
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  17. Kief

    Kief

    Messages:
    4,381
    Location:
    Southwest Oregon
    What kind of floor covering do you have or are those just covers?
  18. JerseyCruiser

    JerseyCruiser

    Messages:
    534
    Location:
    North Jersey
  19. harper68

    harper68

    Messages:
    258
    Location:
    Reno
    Anyone have their rear seat belts get wet fron this?
  20. wussyPup

    wussyPup just another VI Cruiser

    In that last picture (above), would it have been easier to shorten the existing tube by a few inches so that the new 5/8 hose could be inserted without kinking the existing tube?

    -Steve

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