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Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
T
TRDejaVu
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The 2 valve mounting bolts go through the valve then through the aluminum spacer block before screwing into captive nuts on the firewall. The short heater pipe comes out through the firewall and goes into the heater valve passing through an o-ring in the spacer block.
The other pipes are pop riveted through the firewall, but this one isn't. What holds this heater pipe in place to prevent it from being forced out of the valve due to coolant pressure? I suspect that I am missing something on the pipe.
The other pipes are pop riveted through the firewall, but this one isn't. What holds this heater pipe in place to prevent it from being forced out of the valve due to coolant pressure? I suspect that I am missing something on the pipe.