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- May 14, 2011
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- On the Ridge, TN
Once I decided to remove the heater hoses off mine, I went whole hog and removed the pipe nipples out of the motor as well, using 3/8" stainless plugs.
Refilled radiator, started the car up to check for leaks - and it started puking out the overflow tube within a couple minutes.
Both temperature gauges went soaring and it finally occurred to me "ah, trapped air pocket"....but why was it puking out the overflow?
Hmmm, radiator cap (new, BTW) must be messed up. No worries, I have a spare...
slapped that one on and things went south pretty quickly after that.
I'm thinking what the hell, this thing runs cool normally and I've done nothing odd or radical here??
Finally looked at first radiator cap. "VENTED"
Looked at my new replacement again: "NON-VENTED"
Oops.
Cleaned up the first one, suffered the geyser that erupted when I slowly took the other one back off the radiator, refilled radiator again and put the vented one back on.
Car is happy again.
What did I learn today?
1. Removing heater hoses from a 440 takes away one way they naturally vent their air pockets.
2. THESE CARS NEED A VENTED ^%$@$^% RADIATOR CAP.
Oy. All part of the process, I guess...
Refilled radiator, started the car up to check for leaks - and it started puking out the overflow tube within a couple minutes.

Both temperature gauges went soaring and it finally occurred to me "ah, trapped air pocket"....but why was it puking out the overflow?
Hmmm, radiator cap (new, BTW) must be messed up. No worries, I have a spare...
slapped that one on and things went south pretty quickly after that.

I'm thinking what the hell, this thing runs cool normally and I've done nothing odd or radical here??
Finally looked at first radiator cap. "VENTED"
Looked at my new replacement again: "NON-VENTED"
Oops.
Cleaned up the first one, suffered the geyser that erupted when I slowly took the other one back off the radiator, refilled radiator again and put the vented one back on.
Car is happy again.

What did I learn today?
1. Removing heater hoses from a 440 takes away one way they naturally vent their air pockets.
2. THESE CARS NEED A VENTED ^%$@$^% RADIATOR CAP.
Oy. All part of the process, I guess...