Thread: TDi Thermostat

The right t/stat as in I think it's the right dimensions, unlike what's listed in the catalogue.

I'll measure up an old genuine one here in the morning to double check.

Originally Posted by 1disco

I have been making the same enquiry know for a couple of weeks, and keep getting told NO. Even in the UK. If you can find one let me know Too PLEASE!

Have discovered that Land rover direct are showing 88, 82, & 78 degree themostat. Im going to try the tridon TT388-180 as advised on other replies.

I got a chance to measure up some thermostats today. I have the OEM one from my HS2.8tgv, a OEM 300tdi, a Tridon TT388-180 and a Tridon TT265-180

Both the HS2.8tgv and the 300tdi are exactly the same. Both are marked "Waxstat" on the top, both have 88c stamped on the bottom ring. Both measure up the same.

Measurements are as follows: Main OD, Height and bottom OD

OEM 300tdi: 52, 40, 33
Tridon TT388-180: 52, 40, 33
Tridon TT265-180: 54, 37, 28

I went to Autobarn the other day and they carry "Stant", unfortunately they had some problems looking at part numbers and they were a bit unorganised. They had one that looked like the right size, but was 195f crack temp. Im pretty sure it was ST5-195. I looked at Stant's website, but couldnt find to look at T/stat specs. It would only allow Vehicle make and model to decide part#, and typicaly it was only American listings so they didnt even have a TDI. Autobarn did have a listing for one. Once again there was some comfusion with LR part numbers for the Stant as with the Tridon catalouge

Stant make and Tridon make 2 types, normal and superflow. Not sure about the Stant, but the Tridon type was still 88c crack temp.

Pics are from left to right: 300tdi OEM, Tridon TT388-180, Tridon TT265-180

FYI. The TT265
54, 35, 28 is for a 200TDI.

What you are after is the Tridon TT2000-180.

Land Rover Defender Discovery Range Rover Tridon High flow Thermostat P/N TT2000-180
$ 20.00


** BRAND NEW **


Land Rover Defender - Land Rover Discovery - Range Rover

Tridon High flow Thermostat

Thermostats bearing the High Flow logo are Tridon High Flow thermostats. Tridon’s range of High Flow thermostats are designed to improve cooling system performance. The High Flow thermostat has a larger valve allowing up to 50% more coolant flow, eliminating the need to use a cooler temperature thermostat.
Tridon High Flow Thermostats are designed to upgrade the vehicles standard thermostat.

Suits:

LAND ROVER DEFENDER 110 3.5L 1984 - 1991
LAND ROVER DEFENDER 2.5L 1992 - 1999
LAND ROVER DEFENDER 2.5L 1999 - 2005

LAND ROVER DISCOVERY ML BL 3.5L
LAND ROVER DISCOVERY ML BL 3.9L
LAND ROVER DISCOVERY ML 3.9L
LAND ROVER DISCOVERY GM 4.0 1999 - 2002

Originally Posted by ugu80

What you are after is the Tridon TT2000-180.

Land Rover Defender Discovery Range Rover Tridon High flow Thermostat P/N TT2000-180
$ 20.00


** BRAND NEW **


Land Rover Defender - Land Rover Discovery - Range Rover

Tridon High flow Thermostat

Thermostats bearing the High Flow logo are Tridon High Flow thermostats. Tridon’s range of High Flow thermostats are designed to improve cooling system performance. The High Flow thermostat has a larger valve allowing up to 50% more coolant flow, eliminating the need to use a cooler temperature thermostat.
Tridon High Flow Thermostats are designed to upgrade the vehicles standard thermostat.

Suits:

LAND ROVER DEFENDER 110 3.5L 1984 - 1991
LAND ROVER DEFENDER 2.5L 1992 - 1999
LAND ROVER DEFENDER 2.5L 1999 - 2005

LAND ROVER DISCOVERY ML BL 3.5L
LAND ROVER DISCOVERY ML BL 3.9L
LAND ROVER DISCOVERY ML 3.9L
LAND ROVER DISCOVERY GM 4.0 1999 - 2002

If you want to cook your 300Tdi or TD5, fit a TT2000

The TT2000 doesn't have the bypass shut off valve, it only suits the V8's. As I mentioned above, don't believe the catalogue, cross reference off measurements only, or just use an OE Waxstat t/stat.

Sooooooo... as I'm about to do a whole lot of work on my 300TDi too, and the thermostat was going to be part of that, is the general discussion leading toward the fact that a lower temp thermostat is better for a defender?

I've got a new OEM one here, don't really do any towing but do load it up for touring in hot weather... (I also think the Vortex diesel heats it up more too...)

It's hurting to sit on the fence... but I'm not sure which side to jump.

not sure why you want a cooler thermostat.

my tdi200 has been running for about "ohh too many months now" with no fans and Im not having a problem with over heating yet.

I suspect you may have other problems if the cooling system is not dealing with normal loads.