72 TA : New Project

[njsteve]

I threw some info out there on the Temperature Sender thread and thought I'd repost it here as well.

https://www.yenko.net/ubbthreads/ubbt...6&page=all

Since it is really expensive to find an original, vintage Delco temp sender that reads correctly, the Wells brand from your local AutoZone ended up being the best and closest calibrated bet. And at $6, it sure beats the hundreds that some people want for an original 1513321. Note: the later Delco replacements are not calibrated correctly and as a result the temp gauge reads way too high - which is the same problem exihibted by the Lectric Limited sender I tested.

Here is the chart I made up comparing the $6 Wells TU5, the $25 Lectric Limited, and a vintage GM 1513321 temp sender. The test was done with a pot of water on the stove. The senders were immersed to the top of the threads and then tested with an ohm meter once the water temp stabilized at each temperature level.

80 degrees: Wells at 650 ohms, LL at 573 ohms, GM at 549
90 degrees: Wells at 526 ohms, LL at 445 ohms, GM at 524
100 degrees: Wells at 429 ohms, LL at 365 ohms, GM at 409
110 degrees: Wells at 328 ohms, LL at 266 ohms, GM at 365
120 degrees: Wells at 283 ohms, LL at 227 ohms, GM at 323
130 degrees: Wells at 250 ohms, LL at 200 ohms, GM at 272
140 degrees: Wells at 216 ohms, LL at 170 ohms, GM at 227
150 degrees: Wells at 198 ohms, LL at 155 ohms, GM at 195
160 degrees: Wells at 173 ohms, LL at 133 ohms, GM at 175
170 degrees: Wells at 157 ohms, LL at 119 ohms, GM at 157
180 degrees: Wells at 135 ohms, LL at 101 ohms, GM at 140
190 degrees: Wells at 120 ohms, LL at 89 ohms, GM at 125
200 degrees: Wells at 109 ohms, LL at 79 ohms, GM at 109
212 degrees: Wells at 104 ohms, LL at 75 ohms, GM at 102