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Thread: Bypassing Heater Core - Pros & Cons

  1. #1
    Join Date
    Jul 2008
    Location
    Adelaide, SA
    Posts
    271

    Bypassing Heater Core - Pros & Cons

    Hi Y'all

    After finding a bit of coolant residue under the dash of my VR6, I have looked up numerous thread regarding heater core replacement and have found the possibility of instead bypassing it completely as a cheaper and easier for the moment until I can afford to get it fixed properly.

    For those who have bypassed their heater core entirely I was wondering if there are any draw backs at all apart from not being able to use the heater?

    Any info is much appreciated.

  2. #2
    Join Date
    Apr 2008
    Location
    Canberra
    Posts
    77
    I have bypassed the heater core in a few of my cars and have never even thought about it.

    If you were thinking oneday you may want to use the heater or some such thing you could just install an under bonnet inline tap. off when its hot, But if it gets very cold you just have to pop the bonnet and turn the tap on.
    ~~~~____~~~~~~~~~_\_____
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  3. #3
    Join Date
    Jan 2008
    Location
    Strathfield,Sydney
    Posts
    996
    my heater core has been bypassed and has never given me any further trouble.personally i think the australian winters are easily bearable and u can even buy one of those small heaters which plug into your cigarette lighter.its something id like to get fixed eventually but hasnt really bothered enough so far.

    76 Scirocco

  4. #4
    Join Date
    Dec 2007
    Location
    Ermington, Sydney
    Posts
    4,421
    Again, I haven't bothered with mine...smells funky if you turn it on, but I hate heat
    Mrk Detailing, premium automotive detailing. Paint correction/protection specialist. PM me

  5. #5
    Join Date
    Feb 2007
    Location
    Perth, WA
    Posts
    2,360
    Heat is delicious! You must have it!
    1996 Golf VR6 Colour Concept Green

  6. #6
    Join Date
    Dec 2006
    Location
    Kilsyth, VIC
    Posts
    6,304
    Users Country Flag
    As long as you actually bypass it and complete the circuit rather than block the pipes, which will destroy your engine, you will be right.

    Technically with the heater on you can reduce your engine temps slightly, the heater core being a radiator and all, but then you would be much hotter Other than that, there shouldn't be any issues bypassing it.

    I have had mine replaced and dang the heater can generate some heat, even in the dead of winter I don't know that I would have the heat full on. Veyr much like the AC, on the right day you will be glad you have it


    If it has an engine or heartbeat it's going to cost you. | Refer a Friend - AussieBroadband $50 Credit

  7. #7
    Join Date
    Aug 2008
    Location
    Bondi, NSW
    Posts
    19
    I ran my VR with the heater core bypassed for about 6 months after it popped (very scary!)
    The only time I noticed a difference in performance was at the track. With the core bypassed the car started to run hot after a few laps. When I replacd the core it held correct temp for a lot longer.
    Under normal driving it was fine with the core bypassed.

  8. #8
    Join Date
    Jan 2007
    Location
    BrisVegas Eastside
    Posts
    24

    Bypassed heater core

    Ive bypassed my heater core over a year ago now. . I got a $10 piece of radiator hose from supercheap and some $2 hose clamps . . .its golden

    the only drama I have now is the wife nagging me to get it fixed so she can have some heat in winter. . . .

  9. #9
    Join Date
    Apr 2008
    Location
    Brisbane
    Posts
    989
    Users Country Flag
    That is good idea ... you will use a little bit less red coolant ...
    R36 > MK5 2006 1.9 TDI > MK4 2003 1.6 Generation > MK3 1995 2.8 VR6 > MK2 1990 1.6 > MK1 1982 1.8 GTI

  10. #10
    Join Date
    Nov 2007
    Location
    West Lakes, South Australia
    Posts
    30

    Why not fix it...

    If you can find a cheap heater core fixing is not that hard.
    Don't go to VW but try Euro Car Parts in your capitol city.

    The biggest issue is the time to replace it. It took me about a day to strip out my dash and then another day to put it all back together...
    While you're in there make sure you wash out the vents in your dash. You can't remove them from the dash as they are help in place with plastic welds.

    Take it from me the longer you leave it the harder it will be to motivate yourself to fix it.

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