Expansion tank fitting
Have an account? Register

Forgot your password?

Forgot your username?

Likes Likes:  0
+ Reply to Thread
Results 1 to 3 of 3
  1. #1
    I'm a grown up member now !
    Join Date
    Feb 2017
    Post Thanks / Like
    V8107e is offline

    Expansion tank fitting

    Next question I need answering, my 302 keeps chucking water out the overflow when it gets hot, I've been told to fit an expansion tank to remedy it. On my rad, it's got the take-off under the cap for an overflow and on the opposite side of the rad at the top, there's an inlet/outlet that's been blanked off. So the question is where do I plumb the outlet from the expansion tank to? (If that makes sense!!) Cheers

  2. Remove Advertisements

  3. #2
    Official RnS Addict Perfect65's Avatar
    Join Date
    Jun 2011
    Keeston, H/west
    Post Thanks / Like
    Perfect65 is offline
    I had a similar thing because I was putting too much coolant in. I fitted an open catch tank on the overflow to monitor the outflow and found no problem if I just about topped the core tubes in the header. If you have a tall rad it's surprising how much the level rises when hot but of course you cannot check it without scolding yourself.
    If you want a sealed system where the overspill is drawn back when the engine cools you need an expansion tank with its own pressure cap and the current filler neck has a non pressure cap that Is just for topping up on first fill. All my own experience but others may offer a different opinion of course.
    Greatest discombobulations to all my readers.

  4. #3
    Rods 'n' Sods Junkie
    Join Date
    Aug 2016
    Post Thanks / Like
    ranchero72 is offline
    stick the drain pipe from the pressure cap in a bottle. it will catch the water that spill out and suck it back in when the engine cool's down.provided you have a pressure cap
    with a return valve

+ 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.

Where you live, Town\City\County etc.

Please enter your full name
This field cannot be edited once it has been completed other than via contacting the site admin. Please make sure the information is correct first time.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Similar Threads

    1. Replies: 1
      Last Post: 20-10-2012, 13:36
    2. Expansion Tank Placement
      By Curnie in forum Tech Discussion
      Replies: 6
      Last Post: 18-06-2012, 18:00
    3. Replies: 0
      Last Post: 10-10-2011, 15:24
    4. Expansion Tank Water System Plumbing
      By BlueGenePop in forum Tech Discussion
      Replies: 5
      Last Post: 06-02-2011, 21:18
    5. Replies: 10
      Last Post: 20-09-2009, 17:15


    Posting Permissions

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