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3000 Express Thru Hull drain replacements
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Topic author - Junior Member
- Posts: 30
- Joined: Fri May 17, 2019 7:42 am
- Home Port: Irondequoit Bay- lake Ontario
- Vessel Info: 2002 3000 Express Crusader Captains Choice
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3000 Express Thru Hull drain replacements
All of the above is great, but now I am stressing out about all of the remaining thru hulls, particularly the several that are right on and in the waterline! I cannot imagine access to most of these within the engine room! Please provide horror story details for me so I can beginning planning my fall/winter work!
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- Joined: Sun Apr 19, 2020 11:17 pm
- Vessel Info: 3000 Express Cummins 4BTA's
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3000 Express Thru Hull drain replacements
Ive replace every thru hull on the boat (and eliminated the ones on the sides on the waterline) I have access to to area through access doors that I installed.
With the four on the transom you have three options
Marelon or Trudesign composite (both are very good products) Marelon was what the boat was installed with from the factory
Bronze however they will need to be included in the bonding system
Stainless from Gemlux however they will need to be included in the bonding system
11/8 90’
https://gemlux.com/collections/cast-boa ... oducts/820
Trudesign (Gemlux are the US distributors)
https://www.trudesign.nz/marine/products
Marelon
https://www.forespar.com/marelon-marine ... bing.shtml
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Topic author - Junior Member
- Posts: 30
- Joined: Fri May 17, 2019 7:42 am
- Home Port: Irondequoit Bay- lake Ontario
- Vessel Info: 2002 3000 Express Crusader Captains Choice
- Has thanked: 5 times
- Been thanked: 9 times
3000 Express Thru Hull drain replacements
The first photo of the access door is by the helm behind what is my fire extinguisher it appears. I am assuming that the 2 forward bilges and the air conditioning drain can be accessed there. The cabin sink sump and some other drains can be accessed under the bathroom sink I think? Also it looks like marelon does not carry a 90 degree 1 1/8" hose barb option for the stern now. Are any of the others 90 degree or are they straight?
3000 Express Thru Hull drain replacements
I used 1" stainless straight thru hulls cut down in length and used a 1" bronze elbows and a custom stainless washer on the inside. I had to re-thread the elbows extra deep. I'm using the elbow as the thru-hull nut. Made sure that there were enough threads for the assembly to tighten up correctly.
It would have worked better if I had re-threaded the elbows to straight thread to match the thru-hulls, but I got them tight before running out of thread.
Sealed everything with 4200. My aft ones are well above the water so I didn't bother to add bonding to them.
I had to abandon my original hoses as they were secured with a clamp way in the back corner far from reach. New ones have a air-break loop above the thru-hull.
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- Member
- Posts: 69
- Joined: Sun Apr 19, 2020 11:17 pm
- Vessel Info: 3000 Express Cummins 4BTA's
- Been thanked: 23 times
3000 Express Thru Hull drain replacements
The first photo of the access door is by the helm behind what is my fire extinguisher it appears.
Yes, there’s a smaller door on the other side
I am assuming that the 2 forward bilges and the air conditioning drain can be accessed there. The cabin sink sump and some other drains can be accessed under the bathroom sink I think?
Mine is set up different now - from memory this is how it was from the factory
Port side
Three thru hull fittings on the waterline
11/8’ - access from engine room. Shower sump
2’ - access from engine room. Upper deck/live tank/air intake box drain
11/8’ - access from under bathroom sink. Kitchen/Bathroom sink sump
Starboard side
2’ On the waterline. Upper deck/air intake box drain. Access from engine room
1 1/8’ above the waterline. Engine room bilge pump. Access from engine room
3/4 above the waterline. Aircon discharge, access in cabin (under the AC/DC electrical panel)
Also it looks like marelon does not carry a 90 degree 1 1/8" hose barb option for the stern now. Are any of the others 90 degree or are they straight?
The stern thru hulls are two inch,I used straight on mine, 90’s would have been better, these two together should work
https://gemlux.com/collections/thru-hulls/products/8831
https://gemlux.com/collections/marine-a ... ducts/8758
There is also four 2’ 90’s on the lowerdeck under the stainless strainers, they connect to the four 2’ in the stern, these are the only ones that will fit.
https://www.ebay.com/itm/TH-Marine-Thru ... 272?_ul=IN
Iv’e attached a factory build pic,circled are the Starboard thru hull connections
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Topic author - Junior Member
- Posts: 30
- Joined: Fri May 17, 2019 7:42 am
- Home Port: Irondequoit Bay- lake Ontario
- Vessel Info: 2002 3000 Express Crusader Captains Choice
- Has thanked: 5 times
- Been thanked: 9 times
3000 Express Thru Hull drain replacements
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