Land Rover Discovery Engine pressure Test Videos
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Recovery Vehicle
Joined: Feb 2009
Posts: 1,151
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From: Denver, CO
Land Rover Discovery Engine pressure Test Videos
Hello All,
I parted out a 2004 Discovery in April of 2010. This is my last big part to be sold. The engine died from vapor lock or something similar. All the parts looked great. I had this engine block, crank cleaned at a machine shop. They didnt have a large enough cage over their dip tank to pressure test the block. But they were cool enough to give me aluminum blocks for clamping and heavy rubber gasket material so I could do it at home. Here is my video(s) after a short afternoon and evening of creating the seals with clamps and the air nipple connection. It turned out well so far. 2nd video will be officially dipping it in water in my utility sink to verify there are no bubbles. Similar method used for a bike tire inner tubes back in the day when you wanted to find the hole. No bubbles means no cracks or slipped cylinder sleeves. Though on this 04 I see no ledge on the bottom of the cylinder sleeves so the liners could slip it looks like. Guess the jury is still out on that one.
Video 1
2004 Land Rover Discovery Engine pressure Test
Now all is completed. I left the block at 35psi for about 60 minutes and no air pressure was lost form my compressor air guage. Next I immersed the block one half at a time in the utility sink. No bubbles! so it is double verified good.
Video 2
2nd 2004 Land Rover Discovery Engine pressure Test
I parted out a 2004 Discovery in April of 2010. This is my last big part to be sold. The engine died from vapor lock or something similar. All the parts looked great. I had this engine block, crank cleaned at a machine shop. They didnt have a large enough cage over their dip tank to pressure test the block. But they were cool enough to give me aluminum blocks for clamping and heavy rubber gasket material so I could do it at home. Here is my video(s) after a short afternoon and evening of creating the seals with clamps and the air nipple connection. It turned out well so far. 2nd video will be officially dipping it in water in my utility sink to verify there are no bubbles. Similar method used for a bike tire inner tubes back in the day when you wanted to find the hole. No bubbles means no cracks or slipped cylinder sleeves. Though on this 04 I see no ledge on the bottom of the cylinder sleeves so the liners could slip it looks like. Guess the jury is still out on that one.
Video 1
2004 Land Rover Discovery Engine pressure Test
Now all is completed. I left the block at 35psi for about 60 minutes and no air pressure was lost form my compressor air guage. Next I immersed the block one half at a time in the utility sink. No bubbles! so it is double verified good.
Video 2
2nd 2004 Land Rover Discovery Engine pressure Test
Last edited by bosshogt; Feb 3, 2011 at 02:51 PM.
Thread Starter
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Recovery Vehicle
Joined: Feb 2009
Posts: 1,151
Likes: 30
From: Denver, CO
My oven is not big enough!
Yeah my kitchen oven is not big enough to heat the block 
Sounds like more work for the test but understand how the steel sleeves and the aluminum block could expand and contract at different rates. So to those who are in the know, what are engine makers using today for cylinders...all aluminum, thicker steel sleeves? Like Honda/ Toyota...all aluminum blocks, do they have steel sleeves, I'm wondering what they have done to make there engines so reliable. Seems the reason ours fail so much is the steel sleeve wall is about 1\16" thick kinda dumb, with the pistons running at 680 to 4000rpm and combustion in their no wonder they fail!
Sounds like more work for the test but understand how the steel sleeves and the aluminum block could expand and contract at different rates. So to those who are in the know, what are engine makers using today for cylinders...all aluminum, thicker steel sleeves? Like Honda/ Toyota...all aluminum blocks, do they have steel sleeves, I'm wondering what they have done to make there engines so reliable. Seems the reason ours fail so much is the steel sleeve wall is about 1\16" thick kinda dumb, with the pistons running at 680 to 4000rpm and combustion in their no wonder they fail!
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