Hee I'm very relaxed Kaiser!
But it's a few owners with cold running and longer warm up (than they are used to) who are dissappointed.
Just trying to help but your very informed explanations are not helping us achieve our goal of a fantastic modification.

I've been reluctant to fit any more because the 5 member's installs were only 90% happy and I want them to be 100% happy!!

So lets work out together what the next step is.

Jules, you state this:
Do you have any update on this? I.e. have there been any long term problems or is everything perfect when using the original stat in Kaiser's housing?

I'm asking because I would like a metal thermostat housing that is less likely to break that the plastic one, but don't want cooling running or longer warm-up.

The only disadvantage I can see with this is that the themostat itself isn't being replaced whilst the system is taken apart, and new stats are only available in OEM housings (AFAIK).

Not sure now as respected member David3807 fitted on OEM stat in his metal housing only to find his was running too hot (around 100C) with Fan running excessively.

He then put Kaisers stat back after blanking the 5mm hole up (which we've now proved DOES shorten the warmup time) and now runs cooler again but still cooler than it should be due to the 80C stat Kaiser chose instead of 82C as chosen by MGR.

I just wish we could get Kaiser to put 82 C stats in his housings instead of 80C.
If he could also make the Housing internal bypass seating the same as OEM, we would order 100's of them! (that design change prevents us from choosing to fit the OEM Stat insert)

But at the moment I'm back to fitting OEM plastic types as there were just too many members reporting cooler than previous running temps plus longer warmup times.

Cooler engines cost us that valuable MPG here in cold UK, but I think Kaiser has yet to be convinced of this!!

Having today had a metal Kaiser and Stat fitted, is there any update?

Update:

Tourer 2.5 Auto

Original 4.5/5mm hole in stat blocked and another 1mm hole drilled. Kaiser stat refitted.

Last time I checked (about 4 weeks ago when the weather was cooler than today) engine was running about 92/93c which is a little cooler than before with original MGR stat and also a little cooler than my saloon 2.5 Auto which runs at about 96/97c. However warm up time only a little longer than with original MGR stat.

The downside of the smaller hole is that engine is pretty quick to get to 100c when I release accelerator and revs drop a bit - like leaving a motorway on a downhill exit ramp to a roundabout. Remember my cars are autos and a manual car will retain revs a bit more and thus coolant circulation. Ok the fan cuts in at 100/101c (I still have three speed fans on both cars) and reduces the temp but fan certainly working more often.

And thats where I have left matters for the moment largely cos the stat is giving engine temps pretty much the same as the MGR original and on cost grounds as I was paying for all the swapping about. The X Part dealer was pretty reasonable on his charges and I am sure that I was not charged the full time taken but nevertheless it was costing.

Would be nice to see what a Kaiser stat with say 1.5/2mm bypass hole would do though.

Which brings me to another potential downside really. In my research I looked for another stat 'element' opening at say 82c but couldnt find one that would fit. Thats not to say they dont exist just that I couldnt trace one. I tried Googling the trade name of the Kaiser stat and I believe they are commonly available in USA and South Africa but I found nothing in the UK. So what happens if/when the stat fails/sticks ??

Wow, noted the time of your response (do you sleep?).


Question:
Does the ECU tell the car to inject more fuel if the temp is below the old 92c general operating temp?

or does it not matter once the needle is pointing at 9 o'clock or if the temp is in the region of 75-85c.
M

In my view, getting the running temperature close to 100C average is ideal for the diesel. I know many people here start to panic whenever the ODB shows 100C or slightly above as if there's something amiss. Providing the stat is working and the cooling system is mechanically sound, there is a vast cooling capacity available and will ensure the coolant is maintained in the safe band. Remember this tops out at 115C. If you do some research through diesel enthusiast forums and also the reports produced by commercial haulage groups, you'll find the one thing that makes diesels run at their most efficient is getting the temperature up to three figures. I remain a lone voice on this but I'm expecting someone sooner or later will bite the bullet and stop worrying.

TC

Understood but does that apply to Petrols as well ???

Sometimes not so well !!!

As far as running temp goes, yes. They seem to do so it as standard anyway.

TC