Help!!! I need to drain the water out of my GT-40

**get6** · 09-17-2004, 05:01 PM

check your manual, but i would start by draining the water jackets on each side of the engine (one plug on either side near the spark plugs), draining the exhaust manifolds (hex screw on the end of the manifold), draining the strainer and draining the hoses and water pump (plug in the bottom of the hoses on the front of the engine). others might recommend more but i would start there.

**Onthewater** · 09-18-2004, 01:20 AM

if you can't get it drained, keep it heated.

**ag4ever** · 09-18-2004, 09:05 AM

I usually just put marine/rv antifreeze in mine. I get it at wally world, and $5 - 10 is enough to do it, so I am not too concerned about loosing it when I want to go out if it warms up some.

**882001** · 09-18-2004, 10:10 AM

its hard to believe its 13 degrees anywhere, its gonna be 98 today, here. if its only gonna be that cold for a night or two i would go with awhat on the water said. throw a small heater, one of those boat dehumidifiers{heat sorce and a fan} or a drop light under the cover.

**nms1991** · 09-18-2004, 11:49 AM

There is 5 plugs on the engine and 2 on the V-drive. 3 of the plugs on the engine are for the block which take a 9/16 wrench , one on each side of the engine and one in the elbow at the front of the engine between the raw water pump and the circulation pump. Then you need to drain the v-dive which all you have to do is pull one of the square headed plugs at the side near the top of the case. Then you need to drain both exhaust manifolds with the plugs at the end of the manifolds, also you need to drain all of the hoses and water strainer to keep them from freezing. If you have the boat on a hoist in the lake you can just lower it down till the boat is just in the water but not floating and the boat will stay the same temp as thje lake water. But if you have it on a trailer you can use a drop cord light to keep the engine compartment warm, but make sure it does not lay on any carpet or vinyl surface.

**SGY** · 09-21-2004, 08:36 AM

Check this out. Seems pretty slick. Has anyone had experience with this?

http://www.boatsafeheaters.com/

**ClemsonDave** · 10-07-2004, 07:55 AM

I used to carry wrenches, sockets etc. and find all of the plugs to draing the block.

Now, my new boat('03 SN) has a shower on it. Here is what I do...
I installed two petcocks (one at the temp sensor, the other on the other side of the block at bottom.

Pull the boat out of the water.
Run the shower. ( this gets almost all of the water out )
Open two petcocks.
DONE!

Other idea... if you have power nearby, put a lamp in the engine cover. Turn it on and close the engine cover.

dave

**SWCC-PART-MAN** · 10-07-2004, 08:37 AM

drop lights and heaters are a good idea but 1 night with a power loss and your up that well known body of water without means of propulsion. there are 5 plugs in the motor: 2 in the block- starb. above the tranny cooler. port- behind the raw water pump. 1 in the bottom of the elbow next to the raw pump. 1 in the bow side of each exh. man. pull the hose atop of the raw pump abd blow the v-drive water back into the motor. DONE. remember to stabilize the fuel and drain showers and heaters. 15 min. will save thousands. you'll need a 9/16 and a 1 1/16 wrenches. boda-bing your FULLY covered.
jason 903-882-8593

**DTrump** · 10-09-2004, 04:09 PM

Originally posted by SWCC-PART-MAN

drop lights and heaters are a good idea but 1 night with a power loss and your up that well known body of water without means of propulsion. there are 5 plugs in the motor: 2 in the block- starb. above the tranny cooler. port- behind the raw water pump. 1 in the bottom of the elbow next to the raw pump. 1 in the bow side of each exh. man. pull the hose atop of the raw pump abd blow the v-drive water back into the motor. DONE. remember to stabilize the fuel and drain showers and heaters. 15 min. will save thousands. you'll need a 9/16 and a 1 1/16 wrenches. boda-bing your FULLY covered.
jason 903-882-8593

well, I read through a few of these post, and decided this would be a good topic for my buddy, that wants to D.I.Y winterize. I printed this off, and he and I went to his boat house. Well, something mr man here forgot to mention is what to do with the 1 1/16th and 9/16 wrench, to drain the water strainer, and the trans cooler. luckily, we decided best to call a tech, to make sure what we were doing was right. The tech said that the 1 1/16 was for the later model engines have a brass plug for each exhaust manifold, and to drain the water filter, and the trans cooler too. I know that people like to help, and I am sure we all appreciate there efforts, but be thorough in your description, don't just spout off at the mouth, because you think you have this vast knowledge of everything having to do with boats. I made a comment in another post about calling yourself a tire kicker, instead of a horses mouth.......... in case you did not understand, this is because (and you said it yourself) the horses mouth (a dealer) knows there product, and a tire kicker does not.............. ie, that makes you a tire kicker.

No flaming intended, just constructive criticism.

**captainron** · 10-09-2004, 04:53 PM

Glad you said somethin D- I was fixing to go out to the lakehouse and drain mine 2.

**captainron** · 10-10-2004, 05:03 PM

My exhaust manifold drain plugs ended up having a half inch square hole in the back of them. I used my half inch ratchet to remove them.

**SWCC-PART-MAN** · 10-11-2004, 09:01 AM

sorry about the miss on the 1/2" square headed plugs in the older boats there dtrump. here at swcc we have replaced those plugs in all of the boats in the feild that we service with the 1 and 1/16 plugs. reason being that they can strip so easily where you put the wrench to remove them. i also thought it would be self explainatory what to do with the wrenches but i will explain further for you next time.

**sperbet** · 10-18-2004, 05:49 PM

Ok, so I am to the point where I have to drain the water out of the engine. Up until now I was just dropping a couple lights in the engine bay and calling it good. I have found (2) plugs on the v-drive and drained them, (2) plugs on the engine block (1 on each side at the bottom), and (2) on the manifolds(which I have not figured how to get out yet because it takes some kind of tool I don't have, it is a brass plug with a square insert at the end. A wrench definitely doesn't work). I have not been able to find either plug near the raw water pump. I'm pretty sure I do know where the water pump is because I pulled the hose out of it and did get some water out. I cannot find either plug at the back and cannot find what "elbow" that was discussed earlier. I think I am missing 2 more plugs. I also have a heater and a hot water shower. How do I drain them??? I know, I'm clueless thanks for the help.

**skinautique** · 10-18-2004, 07:04 PM

Sperbet,
I am assuming that you have an earlier GT-40 in your boat (approximately 95-97) so you will need a ratchet to put in there and remove the two manifold plugs. To find the elbow, look at the corner of the engine that is on the port side, closest to the transom of the boat. You will see your impeller pump that is driven by a belt and just to the inside of that, you will see a "u" shaped elbow. On the bottom of that elbow is the drain hole. Now you did say that you have a heater and a shower so one of your heater hoses might be hooked up to that point. If that is the case, pull the hose off and lay the hose in the bottom of the bilge. You will find the other heater hose on the top of the engine. It is mounted almost directly above the area I just had you looking at. It will be the same colored hose that you took off from the "u" fitting (If that is where your hose is located). You need to hold the upper hose and blow air through it until you get it emptied out through the bottom hose. It is going to take a lot of air because the hoses go all the way up and under the dash. Your shower is pretty easy to drain. Disconnect the "hot" line from the block and close the cold valve and turn the pump on. This will empty out the hot line. Then you can turn off the "hot" valve and open the cold one to empty that line out.
Make sure that you empty the water strainer bowl and drain the transcooler and the line coming off from the bottom of it.
Hopefully the picture that I attached will help you out. If youa re still unsure, I would strongly recommend that you take it to a dealer to let them show you where these plugs are. It is alot cheaper than having to buy a new engine.

Help!!! I need to drain the water out of my GT-40

Help!!! I need to drain the water out of my GT-40

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