Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

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Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Spysea » Tue Oct 24, 2017 9:08 am

Hello, I am new to the forum, new to boat ownership, and new to the regal brand. I just got the 35SC and would like to install a permanent water heater bypass kit to make it easier in the future. My boat is over an hour away and I am hoping someone on here is familiar and can save me a trip so that I can order the correct kit for installation this weekend. TYIA!

Does Regal use 15mm or 1/2in. plumbing systems (fresh water tubing, quick connects)?

I am hoping to turn this....
water heater 1.jpg
Old setup with no bypass


into this!
water heater 2.jpg
Permanent bypass kit
2014 - Regal 35 Sports Coupe - Twin VP 5.7GiCE-300-P
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Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Rpontual » Wed Oct 25, 2017 4:05 pm

I also have a 35SC, I believe it is 15mm. Please read viewtopic.php?f=5&t=10420&hilit=Check+valve

If you search for “35SC” you will find many of my posts, as I made several modifications some of the old posts might be of value to you. I put “35SC” in the title of my posts because the forum search function does not accept “35”.

What is the benefit of by-passing the water heater?
Romulo

2018 Bavaria R40 Coupe, Diesel
2015 Regal 35SC, Diesel - SOLD
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Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Regal3260 » Thu Oct 26, 2017 9:42 am

Us up north need to winterize our boats. When winterizing the water system you want to bypass the water heater, you ideally don't want anti-freeze going through the water heater. On mine, which I have easy access to, I just disconnect the hot elbow connector from the heater and pull out the supply tubing from elbow going into the heater and connect the two together. I know I posted some pictures before and can post them again later. I only do this twice a year and its easy to do. The bypass kit does look nice though.

Cheers,
Mark
Regal 3260
Toronto, ON
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Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Spysea » Thu Nov 02, 2017 8:10 pm

I bought the bypass kit in hopes of installing it but it got way more complicated than that. The bypass kit only comes in 1/2" so I would have to have a bunch of converters to 15mm. Seems like way too many more failure points to make it worth while. Glad I bought the supplies to do as Regal3260 states, unhook both from the heater and connect directly to each other. This was no small task however as I had to jam my entire upper body into a uncomfortably tight spaces while laying across my engines to reach the cold side.

I need to go back to the store to see if they have the elbow converter 1/2" to 15mm. This will allow me to connect the converter elbow directly to the water heater and a 1/2" pipe leading to the bypass kit. Then only one set of additional connections is required to convert back to 15mm after the bypass kit. Now that I think of it I will definitely get some longer piping to make the bypass easily accessible.
2014 - Regal 35 Sports Coupe - Twin VP 5.7GiCE-300-P
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Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Rpontual » Fri Nov 03, 2017 7:16 am

I have a 35SC and do not have to winterize here in Florida, but I recall that it was impossible to reach those batteries to verify the electrolyte level. While you are working on these are you should consider this device: viewtopic.php?f=4&t=10032
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2018 Bavaria R40 Coupe, Diesel
2015 Regal 35SC, Diesel - SOLD
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Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Spysea » Sat Nov 04, 2017 12:41 am

Rpontual wrote:I have a 35SC and do not have to winterize here in Florida, but I recall that it was impossible to reach those batteries to verify the electrolyte level. While you are working on these are you should consider this device: http://regalownersforum.com/forum/viewt ... =4&t=10032


I saw that thread and was planning on doing this over the winter, maybe I can kill two birds...... Thanks so much for linking it up, it sounds like even a year later you are a fan of these. Any drawbacks that you have experienced?
2014 - Regal 35 Sports Coupe - Twin VP 5.7GiCE-300-P
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Location: RI

Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby gwido1 » Sat Nov 04, 2017 9:54 am

On Amazon you can buy a 15mm to 1/2 fitting
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Re: Regal 35 Sport Coupe Plumbing Diameter 15mm? 1/2in?

Postby Rpontual » Sat Nov 04, 2017 2:27 pm

Spysea wrote:
Rpontual wrote:I have a 35SC and do not have to winterize here in Florida, but I recall that it was impossible to reach those batteries to verify the electrolyte level. While you are working on these are you should consider this device: viewtopic.php?f=4&t=10032


I saw that thread and was planning on doing this over the winter, maybe I can kill two birds...... Thanks so much for linking it up, it sounds like even a year later you are a fan of these. Any drawbacks that you have experienced?


I was never able to verify the electrolyte level before. I cannot even get to the last cap of the second battery, and even if I could I would be able to see the level without a remote camera. After I installed these, I routinely check the level without any effort. If I ever have to replace these batteries I will purchase AGM batteries and get rid of this, but for now this is what I need.
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2018 Bavaria R40 Coupe, Diesel
2015 Regal 35SC, Diesel - SOLD
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