Pete Attryde Posted April 29, 2008 Share Posted April 29, 2008 On a Discovery 300TDi EDC engine there is a temperature sensor in the head above number 3 piston anyone know what the thread size is as I want to get an adapter to fit a thermo-ouple to the head instead of the original sensor. And before anyone says the EDC won't work with out the sensor, I don't have the EDC fitted any more so the sensor is just filling up the hole to prevent coolant loss. . Quote Link to comment Share on other sites More sharing options...
western Posted April 29, 2008 Share Posted April 29, 2008 you could remove the centre of the existing temp sender & cut a thread in the hole to suit the thermocouple, you'd have a ready made adaptor that you know will fit the cylinder head then & without to much extra expense. Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted April 29, 2008 Author Share Posted April 29, 2008 Cheers Ralph, That is plan B, Plan A is to have one of the lads at work turn an adapter up on a lathe, hence needing to know the thread size. Quote Link to comment Share on other sites More sharing options...
western Posted April 29, 2008 Share Posted April 29, 2008 if he's making a adaptor for you, he ought to have thread gauges in the workshop or tool stores. Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted April 29, 2008 Author Share Posted April 29, 2008 True, but I am not in a position to remove the sender and check the threads as I can't easily work on the vehicle at work. I am leaning more towards plan B at the moment, but if I get it wrong I then can't use my truck until I can get a replacement sender / blanking plug or adapter for the thermocouple to stop the coolant from escaping. I suspect it is probably M10x1 but would just like to confirm this before taking the plunge. Pete. Quote Link to comment Share on other sites More sharing options...
integerspin Posted April 29, 2008 Share Posted April 29, 2008 1/8 NPT. if it's a temp sender. Quote Link to comment Share on other sites More sharing options...
mike4444244 Posted April 30, 2008 Share Posted April 30, 2008 Hi Pete, I'll check it on sat if you like, theres some verniers and a set of thread gauges at the unit, I would have thought it was highly likely to be 1/8 NPT but its a land rover so who knows Mike Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted April 30, 2008 Author Share Posted April 30, 2008 Cheers Mike, I hope it is 1/8 NPT because the fitting for the thermocouple is also 1/8 NPT. Quote Link to comment Share on other sites More sharing options...
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