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914World.com _ 914World Garage _ CHT
Posted by: NARP74 Jul 17 2022, 12:21 PM
My guess is this is not factory. Where should it be on a 3.2?
Posted by: SirAndy Jul 17 2022, 12:54 PM
Posted by: Dave_Darling Jul 17 2022, 03:42 PM
That looks to be a ring thermocouple which would be used for a gauge. They are made to go under spark plugs, generally.
It should not have anything to do with the FI; you don't really need it.
--DD
Posted by: emerygt350 Jul 18 2022, 05:42 AM
It looks like it is in poor shape too. I wouldnt reuse it even if you put it where it belongs (around a spark plug). A cht gauge is a fantastic thing to have, but I wouldnt trust that one's readings.
Posted by: Luke M Jul 18 2022, 07:24 AM
My guess is this is not factory. Where should it be on a 3.2?
On a 3.2 the cht sensor screws into the side of the #3 cylinder head.
Look at the sheet metal covering that rear section you should see the wire hanging through it. That is if its in a 911 and factory motronic. If not it could be covered up with the engine sheet metal . Either way look at the #3 head.
Posted by: emerygt350 Jul 18 2022, 08:35 AM
My guess is this is not factory. Where should it be on a 3.2?
On a 3.2 the cht sensor screws into the side of the #3 cylinder head.
Look at the sheet metal covering that rear section you should see the wire hanging through it. That is if its in a 911 and factory motronic. If not it could be covered up with the engine sheet metal . Either way look at the #3 head.
I think we are looking at an aftermarket cht sender, not a part of the injection system.
Posted by: NARP74 Jul 18 2022, 09:02 AM
It's in a 914, I am guessing it is just for the gauge. I can't imagine that working for the FI. It is not a sensor or sender. I need to follow it back to see where it goes.
Posted by: emerygt350 Jul 18 2022, 09:57 AM
It's in a 914, I am guessing it is just for the gauge. I can't imagine that working for the FI. It is not a sensor or sender. I need to follow it back to see where it goes.
The sender for gauge chts are exactly like that. Just a ring of metal on a wire. A special ring, and a special wire.
Posted by: Luke M Jul 18 2022, 11:51 AM
My guess is this is not factory. Where should it be on a 3.2?
On a 3.2 the cht sensor screws into the side of the #3 cylinder head.
Look at the sheet metal covering that rear section you should see the wire hanging through it. That is if its in a 911 and factory motronic. If not it could be covered up with the engine sheet metal . Either way look at the #3 head.
I think we are looking at an aftermarket cht sender, not a part of the injection system.
I was answering the question on the location. What the op has posted is not a factory 3.2 cht sensor nor right location. The 3.2 org cht sensor is screwed into the side of the #3 cyl head and can be accessed through the rear engine sheet metal. What is pictured could be aftermarket unit that is supposed to go under a spark plug. Check the #3 head and you'll see a section that is milled off and has a hole with threads.
Posted by: emerygt350 Jul 18 2022, 06:37 PM
Yes, but are you describing the location of the cht that the ecu uses or the cht a gauge would use. That there, is something a gauge would use.
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