Jump to content

Welcome to TheMalibuCrew!

As a guest, you are welcome to poke around and view the majority of the content that we have to offer, but in order to post, search, contact members, and get full use out of the website you will need to Register for an Account. It's free and it's easy, so don't hesitate to join the TheMalibuCrew Family today!

Sign in to follow this  
Mino

Preventing heater core from freezing

Recommended Posts

Mino

So we had 2 weeks of great weather and then it went back to normal. Temps have dropped into the 20's a couple of times. I know how to drain the engine block, but am looking so suggestions on draining the heater core.

Share this post


Link to post
Share on other sites
Sethro

Just remove the hoses at each end and blow air through the core. Most will say use your own breath (that's what I do) or very carefully use low volume of compressed air. Quick fittings like robtr8 make it very easy.

Share this post


Link to post
Share on other sites
Bill_AirJunky

I can't get to the heater core very easily as it's mounted up, inside the driver's side dash, and there is a subwoofer mounted in front of it.

There is an article in the DIY section on how to install the garden hose fittings above.... similar to the exhaust drain hoses already on most of our boats. I found it's not so easy to get 2 hands down in there to assemble/disassemble those fittings though. I've been using radiator flush Ts installed on the heater hoses at their lowest point in the bilge. I pull the caps off one handed & put them in a cupholder with the hull plugs. Gravity will drain the core if it's installed with the hoses on the bottom edge of the core. And bump starting the motor will blow out anything that happens to be sitting in there.

flushts.jpg

Share this post


Link to post
Share on other sites
BuFootin

So we had 2 weeks of great weather and then it went back to normal. Temps have dropped into the 20's a couple of times. I know how to drain the engine block, but am looking so suggestions on draining the heater core.

Do what robtr8 picture shows. Have them on my 05 and makes draining the core a 30 second task.

Share this post


Link to post
Share on other sites
Mino

Thanks everyone for your input. Looks like I have a new project. Wonder why Malibu doesn't make life easy and just install something like this already.

Share this post


Link to post
Share on other sites
tvano

give a tiny bit of thought to the location and sex of the fittings that you will install.

if that heater core starts to leak you will want to disconnect those fittings and swap them effectively eliminating the heater core without missing a set.

Share this post


Link to post
Share on other sites
davemac

Great little bit of advice, tvano.

Hey... what type of fittings are these, where do you get them, and are they reliable?

TIA

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...