P38A Car history

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Copper-nickel tubing, such as Cunnifer and Nicopp is strong enough for brake pipes, some European cars come with it as standard and it’s also worth noting the word “copper” is not completely true, talking about copper-nickel tubing, you do not use just plain copper!, for OBVS reasons. The nickel, iron, and manganese content present in the alloy are key ingredients to it's strength.

The upside is Copper doesn't generally leak, however copper corrosion on the inside of the pipes is likely if the brake fluid isn't kept fresh, as moisture content will erode the pipes and reek havos with the system as cooper particles run free.

The strength of Copper Nickel is just below steel JUST.. Upside is it doesn't dissolve and **** Fluid everywhere like steel ;) ;)
 
Cheers. So, block thickness no issue but heat dissipation might be in a badly maintained block.

Hmmm. On the other hand my diesel is reliable apart from the effin clutch.
3.5 was bored out an extra 200 thou to give the 3.9 ,4 l 4.2 and 4.6 all have same bore dia as 3.9 but different strokes except 4l which is a 3.9 in all but name , heat is the issue as well as machining accuracy as block now has thin walls, first 3.9s cracked on the passenger side of block generally as water pump favoured the other bank so it was that side prone to get too hot, they changed water pump on later 3.9s which gave better coolant flow to both banks ,a 4.6 is more prone than a 4l as it produces more heat
 
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