Engine Temp Sender Adapter help
Discussion
Hi Guys
I made it back home last night after an 18 hour flight... and was up at 2AM in the garage!! (Ok Ok I'm up because I am jet lagged, but still...)
I was able to get my hands on an adapter that has been recommended previously on PH to install a water/coolant temp sender into the LS engine block.. The sender is a Stack ST764 with a 1/8" NPT thread... the hole on the engine head is a M12X1.5 ... I picked up an Autometer 2277 adapter (M12X1.5 to 1/8" NPT) made for coolant gauges... now I have two problems:
1) The hole in the adapter is not large enough for the sender probe to fit through... Should I drill out the hole in the adapter and make it larger, or is it ok to slightly reduce the sender probe size (assuming its a solid piece - not sure how these senders work)
2) The size of the adapter is such that even IF the probe fits through the hole, the tip of the probe will only barely be exposed to the flowing coolant- is that sufficient area for the sender to work?
Thanks!
I made it back home last night after an 18 hour flight... and was up at 2AM in the garage!! (Ok Ok I'm up because I am jet lagged, but still...)
I was able to get my hands on an adapter that has been recommended previously on PH to install a water/coolant temp sender into the LS engine block.. The sender is a Stack ST764 with a 1/8" NPT thread... the hole on the engine head is a M12X1.5 ... I picked up an Autometer 2277 adapter (M12X1.5 to 1/8" NPT) made for coolant gauges... now I have two problems:
1) The hole in the adapter is not large enough for the sender probe to fit through... Should I drill out the hole in the adapter and make it larger, or is it ok to slightly reduce the sender probe size (assuming its a solid piece - not sure how these senders work)
2) The size of the adapter is such that even IF the probe fits through the hole, the tip of the probe will only barely be exposed to the flowing coolant- is that sufficient area for the sender to work?
Thanks!
If it was me... with the issues as you have describe... I would be turning down the diameter of the sender as well as maybe reducing the depth of the "hex nut" part of the adapter on my trusty lathe....I would have thought that as long as the sender is in contact with some water (which it will be) then it will work. Best of luck.
Hi,
I did the same thing in his older engine.
Magnifying hole reduces the thickness of the wall of the thread.
Adapter often crack when tightening and leaves the thread in the hole. Trouble removing it will not, but it is not a good solution. He practiced 3 times with the same result. The only solution is to change the sensor. Maybe you something to match. This is not a good solution. Problems guaranteed.
good luck
Georg
I did the same thing in his older engine.
Magnifying hole reduces the thickness of the wall of the thread.
Adapter often crack when tightening and leaves the thread in the hole. Trouble removing it will not, but it is not a good solution. He practiced 3 times with the same result. The only solution is to change the sensor. Maybe you something to match. This is not a good solution. Problems guaranteed.
good luck
Georg
Gassing Station | Ultima | Top of Page | What's New | My Stuff