Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 9th September 2010, 22:20   #1
crashmarks
Loves to post
 
Rover 75 Connoisseur SE Tourer Auto

Join Date: Feb 2010
Location: Wakefield
Posts: 408
Thanks: 12
Thanked 8 Times in 8 Posts
Default Diesel thermostat definative answer

Regarding my enquiries with the UK technical manager into whether BMW ever used a hotter thermostat in the M47R engine, this is the reply I have received. This comes from the BMW development engineers in Germany.

The M47R, as we called the engine, was different to the engine for the
320D. For the Rover ( 75) and Land Rover ( Freelander) application we
used the first common rail injection system.
I went back into my documentation and have spoken to the "older"
colleagues in the development about the "cold" running engine.
We have never used different Thermostat during the life span of the
entire M47 engine ( D and R), so we do not have different thermostats to
choose from. We have introduced different thermostats for the late M57
D.
Anyway, we are sure, you cannot change the behavior of the engine with a different thermostat. At the time when we introduced the direct
injection diesel engine we had problems to get the engine to proper
working temperature, because it was so efficient.

We remember that we had big problems to get enough heat for the
passenger compartment heating, therefore we had additional heating.
Basically it would not help to get a different thermostat, because the
engine will not deliver more heat and therefore the operation
temperature of the thermostat does not matter.

I assume the cars are mostly driven in cities and will not get too much
load on the engines. There is no other way to get the engine to hotter temperatures as to put load on them ( faster driving or uphill driving !).
Sorry for this disappointing news , but if they want to play with
thermostats, then I would recommend that they will take one out of the
car and go to a spare part depot and have a look if they can find
another one from a different car, which will fit. At that time, the
supplier used mostly the same design for different car manufacturer.

BMW Group UK

So thats it boys back to the drawing board
crashmarks is offline   Reply With Quote
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 14:39.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd