Where is the normal location of a CHT sensor?

Where is the normal location of a CHT sensor?

The normal location for the Cylinder Head Temperature sensor, or CHT as it’s generally called, has traditionally been under a spark plug for a given cylinder. The problem with this location is that anytime the spark plug is checked or changed, the CHT wires have to be moved and this will sooner or later result in breakage.

How big of a ring do I need for a CHT sensor?

Obtain some 1/4″ rings and drill them out slightly to fit the head bolt. If you can find a metric terminal lug, so much the better. In some cases, depending on the manufacturer, a 5/16″ ring can be used nicely if the ID vs. OD of the ring is thin enough to allow it to seat in the milled land where the stud screws into the head.

Are there CHT sensors under the spark plugs?

There have been discussions from time to time about moving the CHT sensors from under the spark plugs to a nearby headbolt. Since I had never seen any reports of anyone’s doing that, I decided I might as well do it and report whatever results I obtained to the Challenger list.

Where do you put the CHT plugs on a Headbolt?

Place the CHT terminal lug on the headbolt stud and replace the coupling nut. Torque it to spec, and you’re done. This new location gives you the freedom to check your plugs as often as you like without fear of damaging the CHT terminals when the plugs are removed or installed.

The normal location for the Cylinder Head Temperature sensor, or CHT as it’s generally called, has traditionally been under a spark plug for a given cylinder. The problem with this location is that anytime the spark plug is checked or changed, the CHT wires have to be moved and this will sooner or later result in breakage.

There have been discussions from time to time about moving the CHT sensors from under the spark plugs to a nearby headbolt. Since I had never seen any reports of anyone’s doing that, I decided I might as well do it and report whatever results I obtained to the Challenger list.

Obtain some 1/4″ rings and drill them out slightly to fit the head bolt. If you can find a metric terminal lug, so much the better. In some cases, depending on the manufacturer, a 5/16″ ring can be used nicely if the ID vs. OD of the ring is thin enough to allow it to seat in the milled land where the stud screws into the head.

Place the CHT terminal lug on the headbolt stud and replace the coupling nut. Torque it to spec, and you’re done. This new location gives you the freedom to check your plugs as often as you like without fear of damaging the CHT terminals when the plugs are removed or installed.