fiatmonkey
Tim Hoover
Folks,
I recently posted a thread in Workshop forum asking about replacement heater cores. @Jefco suggested a 124 core with some customization to the heater box. He posts pics of the size differences here I used it as direction and did the following:
I bought a core from VicksAuto
Removed the entire heater box (actually had a spare complete box from a 74 project in the works)
Removed old core, all cables and fan. Next test fit the new core to get an idea of the fitment and what needs to be modified. There are 4 tabs on the lower section of the box that I removed and allowed the core to sit lower:
This definitely helped, but needed a little more space AND it also caused a problem where the heater core now was interfering with the actuator for the lower heater door. To solve this, I modified the actuator arm to shorten the throw and the length of the arm-end that connects to the cable.
Allows it to clear AND shortens the distance of the throw so a quicker/easier opening of the door.
I then trimmed an edge off of the fan shroud as I needed about 1/8 of inch more clearance to get the box to close completely. The other option was to leave the shroud out, but I thought that would make the fan far less efficient.
Making sure the fan has clearance and everything fits perfect! A lot of work (maybe?) but was about 1 1/2 of my time today.
I recently posted a thread in Workshop forum asking about replacement heater cores. @Jefco suggested a 124 core with some customization to the heater box. He posts pics of the size differences here I used it as direction and did the following:
I bought a core from VicksAuto
Removed the entire heater box (actually had a spare complete box from a 74 project in the works)
Removed old core, all cables and fan. Next test fit the new core to get an idea of the fitment and what needs to be modified. There are 4 tabs on the lower section of the box that I removed and allowed the core to sit lower:
This definitely helped, but needed a little more space AND it also caused a problem where the heater core now was interfering with the actuator for the lower heater door. To solve this, I modified the actuator arm to shorten the throw and the length of the arm-end that connects to the cable.
I then trimmed an edge off of the fan shroud as I needed about 1/8 of inch more clearance to get the box to close completely. The other option was to leave the shroud out, but I thought that would make the fan far less efficient.
Making sure the fan has clearance and everything fits perfect! A lot of work (maybe?) but was about 1 1/2 of my time today.