Taking off heat exchangers on a six, where to get the long hex tools? Options

[olav]

I need to take off my heat exchangers to get to my valve covers to change the gasket because it seems to be leaking.

Where does one get the long Allen head tool that fits into the heat exchanger canals to remove the exhaust bolt nuts?

Also, are they 10mm or what?

Thanks.


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[olav]

I think it's Fe2O3

Here's something I found on the web so it must be true:


"First of all, lets just define rust. Rust occurs when iron combines with oxygen to form iron oxide. There are different types of iron oxide but rust forms only when there is plenty of oxygen available and is characterised by that red-brown colour.

Now iron will not react with the oxygen in the air. Do you remember when you were in kindergarten? Your teacher probably asked you to hold hands with another child when you went outside. Well in air an oxygen travels around in partnership with another oxygen. In this combined state the oxygen in the air does not react with iron.

When the oxygen in the air dissolves in water (this oxygen is what allows fish and other aquatic life to breathe), each oxygen separates from its partner and goes round on its own. Iron can combine with oxygen in this singular state and does so.


Here's an interesting experiment to try out:

Iron does not react with water; it reacts with the oxygen contained in the water. You can prove this with a simple experiment:

1) Place an iron nail in a test tube with water

2) Place an iron nail in a test tube with recently boiled water (boiling removes the free oxygen in the water)and seal it with a rubber bung to prevent any oxygen getting in.

3)Place an iron in a test tube with oil (oxygen cannot dissolve in oil)

4)Place an iron nail in a test tube with a small amount of calcium chloride to keep the air dry and seal the test tube to prevent continued moisture entering.

Only no. 1 will show rusting."