JMB RetrofitsBadger5
Results 1 to 9 of 9
  1. #1
    Neutral

    Status
    Offline
    Join Date
    Dec 2010
    Location
    Newcastle-upon-tyne
    Posts
    93

    how much should a thermostat open?

    Talking to a friend of mine, he told me the thermostat should be opening all the way, but the one I put in only opens a bit. The old one I took out opened a lot more, but the water temp wouldn't really get over 60. Now it gets to 90 and stays there, so what's right?

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,121
    90 and stays there is correct, how do you know how much its opening...lol

  4. #3
    Welly's Avatar
    VX220 SC Driver :)

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Gloucestershire
    Posts
    10,695
    The old school trick of thermostat testing - put it in a cup of boiling water.....

    Yes mate, now that's some old school mechanics right there!! lol
    ------------------------------------------------------------------------------------------
    "Marriage is like a coffin and each kid is another nail."
    Homer Simpson





  5. #4
    Neutral

    Status
    Offline
    Join Date
    Dec 2010
    Location
    Newcastle-upon-tyne
    Posts
    93
    That's what I did, it only opened slightly, the old one opened a lot more. My theory was: Old thermostat, must be a weak spring and opening too which meant there was too much water going through the radiator and making it too cold. New thermostat, not opening as much because the spring wasn't weak. However, he's got me doubting myself now.

  6. #5
    Welly's Avatar
    VX220 SC Driver :)

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Gloucestershire
    Posts
    10,695
    As long as water can pass through then the amount it opens isn't really that relevant.

    Bear in mind that the water system is under pressure which will help it open.
    ------------------------------------------------------------------------------------------
    "Marriage is like a coffin and each kid is another nail."
    Homer Simpson





  7. #6
    Neutral

    Status
    Offline
    Join Date
    Dec 2010
    Location
    Newcastle-upon-tyne
    Posts
    93
    Yeah, i'll just not worry, I always keep an eye on the temp. I do 30 miles for work and it hit 90 and just sat there the whole time so must be fine

  8. #7
    Dani_B19's Avatar
    Audi-sports own special child.

    Status
    Online
    Join Date
    Nov 2008
    Location
    Barnsley
    Posts
    7,233
    Keep in mind how hot the water in the cups going tobe, it's going tobe constantly cooling down, the only way to see if the thremostat will fully open is to pop it in a pan of boiling water and maintain the temp above 90 degeress . Can also do some boiled egg's with soliders while your at it, win win haha.
    Driving the most secretive S3 on ASN

  9. #8
    Welly's Avatar
    VX220 SC Driver :)

    Status
    Offline
    Join Date
    Aug 2009
    Location
    Gloucestershire
    Posts
    10,695
    Quote Originally Posted by Dani_B19 View Post
    Can also do some boiled egg's with soliders while your at it, win win haha.
    You my friend, are a genius.
    ------------------------------------------------------------------------------------------
    "Marriage is like a coffin and each kid is another nail."
    Homer Simpson





  10. #9
    Dani_B19's Avatar
    Audi-sports own special child.

    Status
    Online
    Join Date
    Nov 2008
    Location
    Barnsley
    Posts
    7,233
    Haha, i do try welly, doesnt always come across that way though lol.
    Driving the most secretive S3 on ASN

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO