It is a restrictor valve, part number 116197, and has a valve and spring
inside. I'm not sure of its purpose, though, since other cars did not
have its equivalent. Maybe Randall knows. It was special order only as
early as the TR4A years. Rimmer Bros. online catalogue shows that they
have it, but also shows it as "not always fitted".
Regards, Bill
Slightly Classics
Tucson
john.dunham@teradyne.com wrote:
>I have come across a pretty crusty, rusty part
>(apparently not available by the big 3) I realize that it is a restrictor
>valve. This is a pretty tall hex piece that fits in between the 5 way
>valve (that bolts to the frame) and the line that feeds from the brake MC.
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