Re: Temp sending Unit
Posted by HH56 On 2011/1/22 17:53:22
51-6 temp senders are pretty much interchangeable electrically. They will all need a resistance of approx 10 ohms hot and around 80 ohms cold. One Packard vendor sells one temp sender and has it labeled 51-6. There may be a bit of variation at the hot end which probably explains the different numbers 51-2 and 53-4 Packard did have an issue with reading hot on some cars and did some fine tuning with a resistor first and then a "recalibrated" sender.
One poster has given a Standard Motor TS4 as an interchange for 55-6. That appears to be a rather generic number but in looking, it should cross to the Echlin TS6464 and another slightly less expensive sender from Mileage Plus --both available at Napa. They were used on some 57 on Fords with the same generation of King Seely gauges we used. Haven't tried one but the specs look good if it has the right thread. For $10-15 +/-, might be worth a try and see how it reads. Here is the Napa info.
The 50 and earlier were a different breed and I don't know if the sender from a 53 will work. Some were thermal type but used straight resistance, and some were thermal but used a bimetal open/close element at senders. Other years had magnetic gauges which I believe need a different resistance to the King Seeley.
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One poster has given a Standard Motor TS4 as an interchange for 55-6. That appears to be a rather generic number but in looking, it should cross to the Echlin TS6464 and another slightly less expensive sender from Mileage Plus --both available at Napa. They were used on some 57 on Fords with the same generation of King Seely gauges we used. Haven't tried one but the specs look good if it has the right thread. For $10-15 +/-, might be worth a try and see how it reads. Here is the Napa info.
The 50 and earlier were a different breed and I don't know if the sender from a 53 will work. Some were thermal type but used straight resistance, and some were thermal but used a bimetal open/close element at senders. Other years had magnetic gauges which I believe need a different resistance to the King Seeley.
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