Results 1 to 5 of 5

Thread: Cylinder head vacuum test bench

  1. #1
    Davezj's Avatar

    Offline
     
    Name
    Dave
    Join Date
    Jan 2006
    Last Online
    09-01-2024
    Membership ID
    255
    Posts
    16,245
    Country
    England
    Location
    Manchester
    Car
    VR-4
    My Garage
    Visit
     

    Cylinder head vacuum test bench

    Has anyone used a cylinder head vacuum test bench.

    I am going to build one for my head rebuild work I am going to do.

    Here is a for sale test bench And how it works

    https://youtu.be/8kKNWSjAy9I

    Sent from my MI 5s using Tapatalk

    Bye for Now!

  2. #2
    Davezj's Avatar

    Offline
     
    Name
    Dave
    Join Date
    Jan 2006
    Last Online
    09-01-2024
    Membership ID
    255
    Posts
    16,245
    Country
    England
    Location
    Manchester
    Car
    VR-4
    My Garage
    Visit
     
    I have all the parts required but my pump creates a much better vacuum than 30 in hg (-1bar). I have a -1 bar vacuum gauge but goes all the way past the -bar to the stop point.

    So i will have to look for a gauge that can cope with the higher vacuum level probably 1.5e-6 bar (1.5e-3 mbar).
    It is Very simple setup really.

    But I would like to know if anyone has any experience of using them.

    Sent from my MI 5s using Tapatalk
    Last edited by Davezj; 12-10-2017 at 03:02 PM.

  3. #3

    Offline
     
    Name
    Sean
    Join Date
    Aug 2010
    Last Online
    16-03-2024
    Posts
    1,381
    Country
    New Zealand
    Location
    Mount Maunganui
    Car
    Legnum VR4
     
    if your gauge is reading past 30 inches of vacuum, its broken, that is the absolute max, you can only take so much air out of a space.

  4. #4
    Davezj's Avatar

    Offline
     
    Name
    Dave
    Join Date
    Jan 2006
    Last Online
    09-01-2024
    Membership ID
    255
    Posts
    16,245
    Country
    England
    Location
    Manchester
    Car
    VR-4
    My Garage
    Visit
     
    Yes very true.
    I got my decimal places wrong.
    The calibration on the gauge I used must have been off.
    I have a couple of of others on order.
    1.5e-3 mbar is quite close to zero. So definitely good enough for a vacuum test bench.
    It is basically a backing pump for a tuurbomolecular pump that creates the higher vacuum levels.
    I don't need 1e-9 mbar like our TOF mass spec instrument we build at work.

    We create our own little bit of space in all out instrument.
    Lol.


    Sent from my MI 5s using Tapatalk

  5. #5
    Davezj's Avatar

    Offline
     
    Name
    Dave
    Join Date
    Jan 2006
    Last Online
    09-01-2024
    Membership ID
    255
    Posts
    16,245
    Country
    England
    Location
    Manchester
    Car
    VR-4
    My Garage
    Visit
     
    i will post pictures of mine when i connect it all up.

Similar Threads

  1. EGT vs Cylinder Head Temperature (CHT)
    By Grid in forum Engine
    Replies: 23
    Last Post: 23-09-2015, 09:02 PM
  2. Boost, vacuum leak test
    By Lexis in forum Turbos, Exhaust & Induction
    Replies: 7
    Last Post: 01-12-2014, 02:20 PM
  3. Cylinder head porting
    By Rally205 in forum General / Questions
    Replies: 12
    Last Post: 03-06-2009, 10:28 PM
  4. re:fto cylinder head
    By zedy1 in forum General / Questions
    Replies: 3
    Last Post: 13-11-2003, 09:53 PM
  5. cylinder head
    By liva in forum UK Parts for Sale / Wanted
    Replies: 5
    Last Post: 13-11-2003, 09:39 PM

Posting Permissions

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