Bilge drain plug

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If you decide to change to the original style, you should do the MrMcD modification to the drain port when you put the drain port in.
You can read about it in the link below.

I'd call it the McDrain 

The picture(s) disappeared but it's basically cutting a groove in the female threads down to the hull so you can drain the maximum amount of water out when the plug is removed

Maybe he can repost the picture

link

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KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11155	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Topic: Bilge drain plug Posted: January-06-2022 at 2:40pm
	If you decide to change to the original style, you should do the MrMcD modification to the drain port when you put the drain port in. You can read about it in the link below. I'd call it the McDrain The picture(s) disappeared but it's basically cutting a groove in the female threads down to the hull so you can drain the maximum amount of water out when the plug is removed Maybe he can repost the picture link

MrMcD Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3764	Post Options Post Reply Quote MrMcD Report Post Thanks(0) Quote Reply Posted: January-06-2022 at 12:12pm
	No advice on the type of plug to buy but I would upgrade to the 5200 which is stronger than the 4200. It is not like your drain plug will ever need to be removed in the future.

Wilhelm Hertzog Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Senior Member Joined: June-14-2014 Location: Cape Town Status: Offline Points: 349	Post Options Post Reply Quote Wilhelm Hertzog Report Post Thanks(0) Quote Reply Posted: January-06-2022 at 8:28am
	For some reason (that 'some reason' probably relating to dollars and cents saved by a PO), my boat's bilge drain plug is what I take to be a drain plug meant for a transom, not for a bilge. It looks like this Perko one: It is mounted on the inside of the hull - there is no flange securing the drain against the outside of the hull. Before realising that this is not the right drain plug for a bilge, and because there was a slight leak around the plug, I re-bedded (and screwed) the drain to the hull some time ago with a 4200 equivalent. It has been solid and dry ever since, but it seems evidently less secure than a proper drain that has a flange on the outside of the hull. The thought of the water pressure against the drain eventually popping the current drain assembly out gives me shudders, so I want to upgrade to the right assembly. The original Nautique drain seems to be a flange style. I see there are also thru-hull style drain assemblies available. Any pro's and con's to take note of between the two different styles? Any recommendations?
	1982 Ski Nautique PCM351W RR II Velvet Drive 10-17-003 1:1 II PerfectPass Stargazer Do not go gentle into that good night. Rage, rage against the dying of the light.

Bilge drain plug

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