In my endeavours to discover whether my 4.6 block is sound, I need to pressure test it. Obviously I need to blank off the water passages, then pressurise, if there are no leaks it should maintain pressure, if there are any significant leaks then pressure will drop rapidly. What pressure should I go to on a cold block? I was thinking around 3 bar or 45 psi. Anyone know what pressure is considered ideal?
Thanks in anticipation.
Andy.
Pressure testing water jackets, 4.0, 4.6 block.
Moderator: phpBB2 - Administrators
-
- Newbie
- Posts: 21
- Joined: Mon Jul 12, 2021 10:37 pm
-
- Helpful or Confused
- Posts: 115
- Joined: Mon Dec 31, 2018 2:29 am
- Location: Thornbury New Zealand
Re: Pressure testing water jackets, 4.0, 4.6 block.
I been thinking the same with my block . I figured Id go with the rated pressure of the radiator cap .......to start with
I wish I was young again , Id be heaps smarter than the first time
-
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Re: Pressure testing water jackets, 4.0, 4.6 block.
Ideally you'd test it on a warm block, as hairline cracks might seal well when cold, but get much bigger when warm.
Normal cooling systems usually operate around 1 bar at most, so a 2-3bar test would seem reasonable. And it's not a large or rapid loss in pressure....it would be any loss of pressure is a concern.
Normal cooling systems usually operate around 1 bar at most, so a 2-3bar test would seem reasonable. And it's not a large or rapid loss in pressure....it would be any loss of pressure is a concern.