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  1. #1
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    Default Brass Drain Plug... Please Advise :)

    Hey guys,

    I got a quick question I just bought a 08 Q4 last weekend and I noticed to while I was cleaing there is a brass plug right beside the regular drain plug. Its on there extremly tight so I didn't force it off. Can anyone tell me whats it for and if i need to keep it off while I store the boat?

    Thanks for the help....

    I post on the tahoe forum and no one repled

  2. #2
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    Default Re: Brass Drain Plug... Please Advise :)

    got any pics ??
    ~~ This boat runs on gas, NOT thanks ~~

  3. #3
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    Default Re: Brass Drain Plug... Please Advise :)

    Here is a couple of pics... thanks for the help

    photo1.JPG

    photo2.JPG

  4. #4
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    Default Re: Brass Drain Plug... Please Advise :)

    From the Pix it could be anything.
    The obvious question is, What is on the inside of the plug?
    Is it just a hole in the transom, or is there a hose connected to it going to somewhere?

  5. #5
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    Default Re: Brass Drain Plug... Please Advise :)

    ^+1
    ~~ This boat runs on gas, NOT thanks ~~

  6. #6
    Lieutenant Commander zopperman's Avatar
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    Default Re: Brass Drain Plug... Please Advise :)

    looks like a garboard drain to me...
    Zak

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  7. #7
    Vice Admiral NYBo's Avatar
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    Default Re: Brass Drain Plug... Please Advise :)

    Yep, that's a standard garboard plug and fitting. The question remains as to just what it drains. It's too high to be for the bilge (which uses the other drain in the one picture).
    Bob
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  8. #8
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    Default Re: Brass Drain Plug... Please Advise :)

    Im not to sure if I even know what a Garboard Drian is for? very new to boating haha

  9. #9
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    Default Re: Brass Drain Plug... Please Advise :)

    Technically, a "Garboard Drain" would be the drain next to the Garboard.
    The Garboard (Old Dutch word) is the first hull plank next to the keel on a wooden ship.
    Today, the Garboard drain refers to the bilge drain at the bottom center of the transom.

    Technically, your Garboard Drain is the Black Plastic drain to the lower right of the brass fitting in the photo.
    The Brass fitting that you have is normally sold for use as a Garboard Drain .... But not in this case.
    In this case it is just a plugged, fancy Thru Hull Fitting.

    All of this is interesting but does not answer the original question, "What is the Brass Fitting for? "

    That takes us back to the other un-answered question posed to you ...
    "What is on the inside of the Brass Fitting, A hole? A hose to somewhere? WHAT???"

    Answer that question and you will answer the first question.

  10. #10
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    Default Re: Brass Drain Plug... Please Advise :)

    I have tried to see if there is a hose or anything attached to it, and I am not able to fully get back there. So i'm just not going to worry about haha...

  11. #11
    Admiral smokeonthewater's Avatar
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    Default Re: Brass Drain Plug... Please Advise :)

    take the plug out.... pour water into any compartment you think might drain through it.... when you see water you have found it.... My bet is you have a compartment that doubles as a built in cooler
    Kevin

    Quote Originally Posted by Tinnie
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    1981 Wellcraft V-20 CC Fisherman (FREE BOAT)
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    Fresh clean cheap oil is better then old dirty expensive oil any day

  12. #12
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    Default Re: Brass Drain Plug... Please Advise :)

    I would but someone said it was a drain for my motor oil, so I don't want oil pouring out. I thought about trying that tho....

  13. #13
    Admiral smokeonthewater's Avatar
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    Default Re: Brass Drain Plug... Please Advise :)

    well if it IS for draining oil there will be a hose from it to the oil pan and there BETTER be a valve at the pan AND finally, if it were my boat and it WAS for oil, I'd be getting rid of it.

    either way, loosen it up and see if oil starts to seep out (I doubt it) or if you find water or air behind it
    Kevin

    Quote Originally Posted by Tinnie
    But, where are the reevets?
    1981 Wellcraft V-20 CC Fisherman (FREE BOAT)
    1989 Wellcraft Monte Carlo 28(Build thread here)
    1992 Hotsports Jet'n'Cat Yam 701 WR3 drivetrain "SS George Washington"
    90's Yamaha WRIII and a pair of 95 Kawasaki ZXI-900's
    Fresh clean cheap oil is better then old dirty expensive oil any day

  14. #14
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    Default Re: Brass Drain Plug... Please Advise :)

    It is a drain for the engine oil. Loosen the plug, it's attatched to a tether that's attatced to a drain line. Take the cap off the end of the drain line and the engine oil comes out. (Done outside of the boat of course)
    2010 Tahoe Q7i
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  15. #15
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    Default Re: Brass Drain Plug... Please Advise :)

    smokeonthewater... Why would you get rid of it if its for oil?


    bellhop... how sure or you its for oil? and is there any reason why I would need to take the plug out?

  16. #16
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    Default Re: Brass Drain Plug... Please Advise :)

    It for a stern shower. You just didn't get the rest of the option.

  17. #17
    Admiral smokeonthewater's Avatar
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    Default Re: Brass Drain Plug... Please Advise :)

    Quote Originally Posted by dmoss8928 View Post
    smokeonthewater... Why would you get rid of it if its for oil?


    bellhop... how sure or you its for oil? and is there any reason why I would need to take the plug out?
    because the ONLY thing I want screwed into the bottom of my oil pan is a plug.... I want it tight and NOT leaking... I don't want any valve that could fail or be opened or a hose that could fail. Further IMHO the ONLY good way to change oil in a boat is by pumping it out through the dipstick.
    Kevin

    Quote Originally Posted by Tinnie
    But, where are the reevets?
    1981 Wellcraft V-20 CC Fisherman (FREE BOAT)
    1989 Wellcraft Monte Carlo 28(Build thread here)
    1992 Hotsports Jet'n'Cat Yam 701 WR3 drivetrain "SS George Washington"
    90's Yamaha WRIII and a pair of 95 Kawasaki ZXI-900's
    Fresh clean cheap oil is better then old dirty expensive oil any day

  18. #18
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    Default Re: Brass Drain Plug... Please Advise :)

    Quote Originally Posted by sschefer View Post
    It for a stern shower. You just didn't get the rest of the option.
    So your sure its for a shower? if so where does it drain from?

  19. #19
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    Default Re: Brass Drain Plug... Please Advise :)

    Quote Originally Posted by dmoss8928 View Post
    So your sure its for a shower? if so where does it drain from?
    Hmmmm
    ReHab
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  20. #20
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    Default Re: Brass Drain Plug... Please Advise :)

    Quote Originally Posted by smokeonthewater View Post
    well if it IS for draining oil there will be a hose from it to the oil pan and there BETTER be a valve at the pan AND finally, if it were my boat and it WAS for oil, I'd be getting rid of it.

    either way, loosen it up and see if oil starts to seep out (I doubt it) or if you find water or air behind it
    ^This. Open it up and find out. Even if it is oil, loosing a teaspoon of oil isn't going to matter.
    1976 Mark Twain 200VBR w/Mercruiser 233 (Ford 351w) "Heart & Soul"

  21. #21
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    Default Re: Brass Drain Plug... Please Advise :)

    Many new Merc motors are coming with a fitting installed on the oil pan drain. This fitting is connected to a hose, which has another threaded fiting on the other end. The intention is (when the boat is out of the water) you can remove the garboard plug, and pull the hose thorugh the garboard drain hole. With the drain hose pulled thorugh the garboard drain hole, you can remove the fitting on the end of the hose to drain the oil from the oil pan rather than sucking through the dipstick. So, if there is a remote drain hose on the oil pan, and if this garboard installation is intended for that remote drain hose, then unscrewing it would do nothing but open the hole which the drain hose would need to be stuck through. It WOULD NOT drain oil immediately by opening the garboard plug. It would be silly that you would connect to oil to an underwater inlet. In the event of failure, you're introducing water directly to the oil.

    This is how it is on my Merc 496.

  22. #22
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    Default Re: Brass Drain Plug... Please Advise :)

    I have an 06 Q6 with the exact same plug. It is to drain your oil. If you remove that plug there will be a tether as mentioned earlier. Pull the tether which will pull out the drain hose which will have a treaded plug on the end. Remove that plug and that will drain your oil. Personally I cannot imagine changing the oil without this...

    R
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  23. #23
    Admiral smokeonthewater's Avatar
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    Default Re: Brass Drain Plug... Please Advise :)

    Quote Originally Posted by dmoss8928 View Post
    So your sure its for a shower? if so where does it drain from?
    sschefer was making a joke LOL

    It looks like we have it narrowed down.... just pull the plug.... Don't be SKEERED
    Kevin

    Quote Originally Posted by Tinnie
    But, where are the reevets?
    1981 Wellcraft V-20 CC Fisherman (FREE BOAT)
    1989 Wellcraft Monte Carlo 28(Build thread here)
    1992 Hotsports Jet'n'Cat Yam 701 WR3 drivetrain "SS George Washington"
    90's Yamaha WRIII and a pair of 95 Kawasaki ZXI-900's
    Fresh clean cheap oil is better then old dirty expensive oil any day

  24. #24
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    Default Re: Brass Drain Plug... Please Advise :)

    Quote Originally Posted by Rentaltux View Post
    I have an 06 Q6 with the exact same plug. It is to drain your oil. If you remove that plug there will be a tether as mentioned earlier. Pull the tether which will pull out the drain hose which will have a treaded plug on the end. Remove that plug and that will drain your oil. Personally I cannot imagine changing the oil without this...

    R
    Awesome thanks for all the help guys!!!

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