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Heat expands it. You could soak it in PB blaster, followed by propane. A few heat/ cool cycles will break it free. Then use freeze it on the plug, and with a well fitting wrench, it may move.
I have to tell you, that 50 year old cast iron boss may crack. It would be safer to drill it hollow, hacksaw one slot, and turn it out.
Its a ton of work either way, and may not go well.
I agree with Big2Bird... I dont think i would mess with any of those plugs in the heads.
I dont think you will need a temperature controlled switch for the condenser fan. As you stated, this AUX fan is only for the condenser when it reaches a certain pressure (254 psi). I dont think engine temperature really needs to be a considered variable when it comes to condenser temp/pressure.
My aux only comes on in stop and go traffic on hot days. You could wire up a switch to ground an just flip that to see if you get any benefit. Most AC systems like a cool condensor. A lot of cars do run the AUX condesor fan (if equipped) all the time when the compressor is engaged but I just dont think you need that or an engine temp controlled switch in this case. Let the trinary call it if it needs it. Just my $.02. I would leave those coolant plugs alone.
Including the wiring docs for the other guys to look over
I agree with Big2Bird... I dont think i would mess with any of those plugs in the heads.
I dont think you will need a temperature controlled switch for the condenser fan. As you stated, this AUX fan is only for the condenser when it reaches a certain pressure (254 psi). I dont think engine temperature really needs to be a considered variable when it comes to condenser temp/pressure.
My aux only comes on in stop and go traffic on hot days. You could wire up a switch to ground an just flip that to see if you get any benefit. Most AC systems like a cool condensor. A lot of cars do run the AUX condesor fan (if equipped) all the time when the compressor is engaged but I just dont think you need that or an engine temp controlled switch in this case. Let the trinary call it if it needs it. Just my $.02. I would leave those coolant plugs alone.
Including the wiring docs for the other guys to look over
good advice thanks. I will just let the pressure switch tell the fan when to kick in.
