 | CAUSE:
If you have found this site, you are probably aware of the problem some of the Vauxhall C20XE and C20LET GM heads suffer from, commonly known as the `porous head`. The following pages will hopefully help you understand the problem and possible fixes.
Cause - Click to read up about one of the most common cause of `mayo in the water` on the C20XE and C20LET engines and the misconception that is the porous head.
FIXES:
Outlined are two guides which will help you understand how to fix the problem of the `porous head`.
Solid Tubing - Click to gain an insight on how to use a solid tubular bar to solve the problem.
Hollow Sleeving - Click to gain an insight on how to use a hollow tubular sleeve to solve the problem.
Pipe Size - As a guide the size of pipe which a few people have reported using is: 8mm in diameter and 87mm in length. I would sugest using an aliminium tube where possible so there is no cross metal corrosion, and no warping due to different expansion rates. See the visitors section for links to sites which maybe using / detailing the fix.
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Most people who would atempt to fix their own 'porous head' will know the cost of a new head, or the cost of getting a company to fix the problem.
The information provided on this site, is for educational purposes only. If you decide to use the information to D.I.Y fix your own head, we accept absolutely no responsibility.
If you use any of this information and end up damaging your engine / head it is your own fault!
We also cannot guarentee that if you follow the information on this site, that it will fix your problem. It could be somewhere else masking as the common fault, it could be you haven't done it correctly, this is not our fault!
Sorry to have had to add this, but we want to make sure you understood that the information is supplied to educate you on the problem. We cannot be held responsible for what you do with it.
Some of the pictures on this site have been taken by us, whilst some of the pictures have been collected off forums. We thank all those who took the pictures, however we are not sure who the pictures actually came from. If you have a problem with us using any of your pictures, please contact us.
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