Temp sender fitting
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I have tried for years to get my temp gauge to approximate the actual coolant temperature.
I replaced my original gauges with new Smiths classic gauges as the originals were beyond repair.
The temperature gauge is Smiths (Caerbont) P/N BT2204/00B.
The sender that I believe matches that is TT380300. Caerbont says they use the TT681101. They are checking the respective ohmic values. I am currently using an Intermotor P/N GTR120 which is said to match the TT681102. The gauge presently reads 10 to 15 C high.
From my brief experiments I consider the GTR110 (interpart) a closer ohmic range. Unfortunately that is a 5/8-18 thread. It appears that the present sender, a 1/8-27 npt thread, fits into a fitting which screws into the block and appears to be the 5/8-18.
Has anyone successfully removed this fitting from the block without damage to the head?
Picture attached.
Bob
I replaced my original gauges with new Smiths classic gauges as the originals were beyond repair.
The temperature gauge is Smiths (Caerbont) P/N BT2204/00B.
The sender that I believe matches that is TT380300. Caerbont says they use the TT681101. They are checking the respective ohmic values. I am currently using an Intermotor P/N GTR120 which is said to match the TT681102. The gauge presently reads 10 to 15 C high.
From my brief experiments I consider the GTR110 (interpart) a closer ohmic range. Unfortunately that is a 5/8-18 thread. It appears that the present sender, a 1/8-27 npt thread, fits into a fitting which screws into the block and appears to be the 5/8-18.
Has anyone successfully removed this fitting from the block without damage to the head?
Picture attached.
Bob
- rdssdi
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Bob,
My car is a 1968 S4 Elan. I measure the thread into the head that you refer to as, 3/8" NPT, which is 18 threads to the inch and very close to 5/8" O.D.
My Elan has different temperature gauge arrangements, but has an adaptor that screws into the head, and unscrewed OK.
Richard Hawkins
My car is a 1968 S4 Elan. I measure the thread into the head that you refer to as, 3/8" NPT, which is 18 threads to the inch and very close to 5/8" O.D.
My Elan has different temperature gauge arrangements, but has an adaptor that screws into the head, and unscrewed OK.
Richard Hawkins
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- Joined: 05 Jul 2008
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