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engine block drain plugs
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Author:  skidaddytn [ Thu Nov 06, 2014 1:29 pm ]
Post subject:  engine block drain plugs
Does anyone know if they sell longer brass drain plugs for the block? I was thinking it would be easier to get them in and out if they protruded an inch further out. Especially the one on my port side as there are many wires and hoses routed right on top of the plug.
Author:  Jdpber [ Fri Nov 07, 2014 12:46 pm ]
Post subject:  Re: engine block drain plugs
use the fixed drain thru brass plugs. this is what i have and they only need 3/4 turn and they drain, nothing to remove or loose.

http://www.ebay.com/itm/NEW-Quicksilver-Mercruiser-Manifold-and-Block-Drain-Plug-Kit/261269782635?_trksid=p2054897.c100204.m3164&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140407115239%26meid%3Da15c6f03577f4eb69240eb95f8e83617%26pid%3D100204%26prg%3D20140407115239%26rk%3D1%26rkt%3D30%26sd%3D271440795559
Author:  skidaddytn [ Mon Nov 10, 2014 5:32 pm ]
Post subject:  Re: engine block drain plugs
Nice! I could use those as is, or loctite them together to create my own longer plugs. Usually the water just pours out, but this year I had to probe one of the manifold drains to get it to flow. I think removing them makes it easier to detect if you have blockage.
Author:  Technologic80 [ Mon Dec 08, 2014 4:00 pm ]
Post subject:  Re: engine block drain plugs
Yuck. I have the ones that Jdpber recommended on my T-4.3 engines in my 278 Vista, and they are NOT fun to get at (at least in my bilge). Especially if you drop the wrench/socket/socket with extension/whole rachet with socket with extension down in the bilge. :evil: Sometimes that happens multiple times. And the I start cussing in multiple tongues, lol.

I dont have these yet, but this style has been recommended to me several times by my marine mechanic:
http://www.ebay.com/itm/MERCRUISER-MARI ... 56&vxp=mtr

They are blue, easy to spot, and you can use your thumb (cant drop that in the bilge!) :lol:

I plan on buying some and install them at the end of a piece of short pipe so I can reach them really easily. Having twin engines and a cramped bilge with a generator and hot water heater, makes draining the engines a NIGHTMARE.
Author:  LouC [ Mon Dec 08, 2014 6:48 pm ]
Post subject:  Re: engine block drain plugs
I would not use the Merc plastic ones, because when they get stuck they break off in the drain. Which will result in stream of profanities issuing from the bilge, scaring children and old ladies. I use the old school OMC/Volvo ones, simple brass drains with the T handle on the end. Expensive but you can put a small adjustable on them and easily get them out.
Author:  Vintage Beauty [ Tue Dec 09, 2014 6:59 am ]
Post subject:  Re: engine block drain plugs
LouC wrote:
I would not use the Merc plastic ones, because when they get stuck they break off in the drain. Which will result in stream of profanities issuing from the bilge, scaring children and old ladies. I use the old school OMC/Volvo ones, simple brass drains with the T handle on the end. Expensive but you can put a small adjustable on them and easily get them out.


My engine block plugs are just like this. A few turns to drain through, or you can pull the t-handle valve and ream the port if debris is slowing water flow.
The only downside (probably for any plug) is those plugs are HOT if you drain when you come off the water. I only do this in the fall when days are nice for boating but nights are getting close to freezing. I like to drain at the launch when we pull out (before I forget, and so the bilge can drain completely on the way home).
This year I added some drain petcocks to my exhaust to eliminate the need for wrenches to drain that part of the system too.
http://www.amazon.com/gp/product/B00835 ... UTF8&psc=1
http://www.amazon.com/gp/product/B0044F ... UTF8&psc=1
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