2.5TD to 200 Tdi

[90 Mellis]

Just in the process of doing a 200Tdi conv. to my 2.5TD 90. I've heard that the 200Tdi temp sender will not pair up with the 2.5TD gauge(false readings?).

Can I just change the sender over to a 2.5TD type?? Are they the same fitting/thread??

Cheers Mike

[JST]

i am doing the same conversion at the moment. From the last one we did on DSNs motor you can use the tdi one but it will read low on the def gauge (thats with a disco engine) What engine variety is yours?

I am not sure if a 200tdi def engine with def temp sensor will work as normal with the td guage.

i am currently doing a disco 200 into a def and am going to try it first with the disco 200 sender, then with a def 200 sender then with a TD sender.

Note the td sender will NOT go straight into the existing thread, you will need to re do it, 5/8UNF from the thread on the int forum at the moment.

TD sender : PRC3559

Def 200tdi: PRC 8593

dont know the MPN for a disco 200 sender as already have on of those!

[western]

Use the correct Defender 200Tdi sender unit PRC8593 for the water temp gauge, it won't give correct readings with any other sender. my 110 was a 2.5Td, had a Defender type 200Tdi fitted 12 years ago, the sender mentioned ^^^^ works fine with the TD gauge

[Diesel_90]

got a disco 200 in my C reg 90, temp works but reads in the red when its at normal temp. ive lernt how to "read" the guage and just put up with it. never had any probs

[90 Mellis]

Opps forgot to mention that it is a Disco 200 Tdi i'm fitting!! So can I just fit a Def 200Tdi sender to correct the gauge reading??

Cheers Mike

[selectcase]

Not sure of this helps but when i fitted my 200tdi disco engine in to my 2a swb i used an adaptor pt no ERC 8973 about £5 from a lr dealer. This threads in to the 200tdi head and allows me to use my series sender unit so keeping the correct reading.

the adaptor was originally fitted to the 2.5 petrol engines that were fitted to 90's

[western]

or obtain the lower part of the thermostat housing for a Defender 200Tdi, it's a straight swap but hoses may need adjusting

[JST]

Well the disco engine i have just fitted to a defender had its first trial run today and with PRC8593 fitted in the std disco housing the temp gauage sits bolt upright when upto temp in a std TD temp gauge.

[90 Mellis]

Cheers JST-I'll get one on order!! So it is a straight swop into the original hsg?? Your a bit ahead of me on the conversion, i'm just making my exhaust downpipe. Decided to have a go in stainless and teach myself Tig welding in the process!!lol

Mike

[JST]

only have the fuel filter to mount and the air filter to sort now.

ref the temp sender, its the same thread (or appears to be) but the 'probe' is longer so the thread wont go all the way in. i screwed mine in first time with PTFE tape on it, didn't over tighten it and its fine, all connected up , no leaks and good as std one.