Cooling issue
+ Reply to Thread
Results 1 to 4 of 4

Thread:
Cooling issue

  1. #1
    AAARRRRRGGGGGGG!!!!! Motomatt68's Avatar
    Join Date
    Nov 2009
    Posts
    288

    Default Bypass cooling system not reading warm on gauge

    I am running a raw water system in my 383. I have this bypass set up.

    Polished Stainless Thermostat Kit For Chevy, 455 Olds

    The temperature sensor is in the intake manifold. The gauge reads cold (below 130 the lowest it reads) if I crimp both the tubes going from the tees where the water pump is normally to the thermostat housing the gauge jumps right up to 190 and stays there. As soon as I let them go it drops back down to below where the gauge reads.

    How do I fix this? Do I have something set up wrong?

    Thanks, Matt.
    Last edited by Motomatt68; 05-31-2015 at 08:29 PM.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    AAARRRRRGGGGGGG!!!!! Motomatt68's Avatar
    Join Date
    Nov 2009
    Posts
    288

    Default

    I will try to draw a picture if this makes no sense...

  4. #3
    AAARRRRRGGGGGGG!!!!! Motomatt68's Avatar
    Join Date
    Nov 2009
    Posts
    288

    Default

    I solved my problem by adding a gate valve between the tees where the water pump normally goes and the bypass thermostat. I believe that the resistance in the engine water passages was high enough that it allowed water coming from the bypass to flow into the intake manifold just enough to cool the sensor which was near the thermostat.

    By necking down the bypass water it equalized the pressure stopping the back flow.

    I hope this helps someone in the future.

    Matt

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member BGMAN's Avatar
    Join Date
    Jan 2008
    Posts
    568

    Default

    you shouldn't need that gate valve there. Something else is wrong. Are you sure you have everything installed correctly? Hoses going to the correct ports? You have that plastic 4 vane valve in there? Thermostat installed correctly? Thermostat has a bypass hole drilled into the side of it?

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95