The only critical part is the wax bulb ....

Lot of cogitations about it ...3 years ago:


http://www.the75andztclub.co.uk/foru...ght=Thermostat

Mike

Hi,

Is necessary to open a small hole in the inline thermostat?

Regards,
FB

Hi fbzr,
the answer is "no" If you do the engine will not reach the required temperature.

Pete.

The tests done with and without a bleed hole with the in-line stat indicates it has a significant effect on running temperature (reduced). Obviously, the size of the effect depends on the size of the hole. I'd anticipate a similar effect with the default type, but I'm not aware of any tests with it.

TC

No hole required
We've fitted many of these stats with no issues
(other than we don't fit them to cars which are likely to tow a caravan due to the fact the inline stat is 30% smaller than OEM)

In certain circumstances the extra maximum flow of the OEM is required when towing up hill on a very hot day for example!

Without the bleed hole the system won't fully self bleed until the first warm up trip has been completed.
You might see the temp rise once to 105deg C but once the air pockets from the top hose have pumped back into the header tank everything will be fine after that.
Don't forget to pressure check to 10 PSI or check for leaks after the first few trips. ;)

Thanks for the answers ...and excellent modification...and explanation :bowdown:

The hole was even the bleeding of air pockets ... nothing else ...

With the inline stat the temp gauge keeps in 9 o'clock or moves between 8 and 9 o'clock?

Regards,
FB

That suggests the variation is between 65C and 75C, which is too low. Run the Trip screen Diagnostic Mode to see the actual temperatures.

TC

...one more diesel with inline stat :D

Installation:

Stainless band cut (dremel)
http://i59.tinypic.com/oumlh0.jpg


The inline stat (Vernet 89°C)
http://i57.tinypic.com/fb03g4.jpg


Let's go!
http://i57.tinypic.com/1z20qbr.jpg


With fairy detergent, hot water, steel pipe (great help) and a lot of strength ...stat slid ...
http://i58.tinypic.com/wanifa.jpg


Within 5 cm...
http://i58.tinypic.com/2428sjl.jpg


Done! The second clamp is for the stat does not slide
http://i59.tinypic.com/2gsil2o.jpg

The result was the first 40 miles temperature was maintained between 84-89ºC.


One question, someone has already withdrawn the stat to replace it? It should be a very hard work too.


Regard,
FB

Oh dear No need to push it in that far or remove the hose!

The copper wax bulb needs to be as close to engine block as possible fot accurate temperature detection.

With the correct rubber lubricant (synthetic based not fairy liquid) they can be removed.

We just removed an inline stat today because a new water pump was being fitted and while dismantled we recommended for not much extra a new OEM stat could be fitted.
Owner said yes please so the deed was done. :)

:}
...The copper wax bulb is 10mm inside the plastic inion :shrug:

...When I have to replace the water pump stat inline will leave too ;)

Regard,
FB