Diesel thermostat definative answer - Page 103

BigRuss · 15th August 2011, 23:07

The way to test is when the cars moving to get best results, on idle it can reach normal and above, but you may find it won't reach 88 when moving

Russ

Jules · 15th August 2011, 23:36

Agree with Russ.
The only sure way to test stat is at 50 MPH in Top Gear.
Should reach and maintain 88C pretty much regardless of ambient temp.

M47 Diesels don't produce enough heat at idle to reach operating temp.

Arctic · 16th August 2011, 00:08

HI Russ/Jules will do much appreciated for your help will test over the next few days

Arctic

spyder · 16th August 2011, 06:31

My Gates arrived yesterday, will fit over the weekend and see how things work out.I get temps of 80-82 max. and about 42MPG on average. Time will tell.

Of course the gates arrived in a box big enough for an alternator-so was well packed. Took a week to get here though.

Arctic · 16th August 2011, 08:34

My Gates Thermostat arrived again today

someone must have double packed it,

or sent the order out twice i wonder if tomorrow will bring another my wife always says thing come in three's

as you state packed in a box big enough to hold about 20 if not more.

Big Fra · 16th August 2011, 10:29

Hi chaps, I'm just catching up on this thread, but i'm struggling with comprehending it.

Can someone please explain the point of fitting an extra thermostat to the car, and how this mod works?

I can see it is a popular mod, and if it benefits the running and/or mpg i'll certainly do it too.

Cheers

davidm_uk · 16th August 2011, 16:44

Ordered my Gates stat from Rockauto
http://www.rockauto.com/catalog/moreinfo.php?pk=1862100
yesterday about midday and it arrived 9:30 am this morning - brilliant service!

(and yes, bloomin great big box)

Mike Noc · 17th August 2011, 08:27

Quote:

Originally Posted by Big Fra

Hi chaps, I'm just catching up on this thread, but i'm struggling with comprehending it.

Can someone please explain the point of fitting an extra thermostat to the car, and how this mod works?

I can see it is a popular mod, and if it benefits the running and/or mpg i'll certainly do it too.

Cheers

Two reasons for fitting - failure of the original (they tend to fail in the open position) or replacing the original to try and get an increase in running temperature for better running efficiency and a warmer cabin in cold weather.

The problem is the M47R engine runs relatively cool on light loads. Also the original thermostat is not easy to get to as, coming from BMW, the engine was derived from a rear wheel inline set up, not front wheel drive transverse as fitted to our cars.

So although in many cases the original failed thermostat is left in place this is a replacement thermostat not an extra one.

If you have the time this thread is a very interesting read right from the start - not sure its definitive yet though!

Mike

craig8661 · 17th August 2011, 08:44

im waiting for my gates stat orderd it from a different company cost me £12 deliverd from the mainland this one is going to be fitted into helens 75 as mine i had a new stat of jules for mine

scouseeric · 18th August 2011, 10:53

Well its a lovely day so i decided to get this 'stat fitted. the problem i had cutting the band i found was actually cutting from front to rear which damaged the hose because of the lip on the plastic housing.
So anyone about to do the job, take care and cut the band from the back toward the front which is flat, hope that makes sense!
took the car for a new tyre, a 3 mile trip with the diagnostics on and the temp reached 82c, better than its 74c max before. Soon see what the mpg goes to next week when its filled!

Eric

15th August 2011, 23:07	#1021
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	The way to test is when the cars moving to get best results, on idle it can reach normal and above, but you may find it won't reach 88 when moving Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

15th August 2011, 23:36	#1022
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Agree with Russ. The only sure way to test stat is at 50 MPH in Top Gear. Should reach and maintain 88C pretty much regardless of ambient temp. M47 Diesels don't produce enough heat at idle to reach operating temp. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

16th August 2011, 00:08	#1023
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,692 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	HI Russ/Jules will do much appreciated for your help will test over the next few days Arctic __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

16th August 2011, 06:31	#1024
spyder This is my second home 75 CDT Auto Tourer , Rover 45 , Astra, Zaffira, Chev Captiva Join Date: Mar 2011 Location: Wilts Posts: 3,342 Thanks: 203 Thanked 436 Times in 360 Posts	My Gates arrived yesterday, will fit over the weekend and see how things work out.I get temps of 80-82 max. and about 42MPG on average. Time will tell. Of course the gates arrived in a box big enough for an alternator-so was well packed. Took a week to get here though. __________________ Chrome skull caps, EGR cleaned (original housing), Mondeo lower mounting, 12V outlets in the armrest and tourer boot, cat fixed, working FBH, Lidl plenum covers, DD with reverse camera.New speakesr/Tweeters with MDF rings. wood dash, Memory leather seats, wooden finished steering and handbrake, Xenon headlights.

16th August 2011, 08:34	#1025
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,692 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	My Gates Thermostat arrived again today someone must have double packed it, or sent the order out twice i wonder if tomorrow will bring another my wife always says thing come in three's as you state packed in a box big enough to hold about 20 if not more. __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

16th August 2011, 10:29	#1026
Big Fra Avid contributor Vauxhall Insignia Join Date: Jul 2011 Location: Blantyre Posts: 206 Thanks: 0 Thanked 0 Times in 0 Posts	Hi chaps, I'm just catching up on this thread, but i'm struggling with comprehending it. Can someone please explain the point of fitting an extra thermostat to the car, and how this mod works? I can see it is a popular mod, and if it benefits the running and/or mpg i'll certainly do it too. Cheers __________________ WHEN WILL IT END? ER, it has!

16th August 2011, 16:44	#1027
davidm_uk Regular poster R75 CDTi Saloon (53 reg) Join Date: Jul 2008 Location: St Albans, Hertfordshire Posts: 78 Thanks: 3 Thanked 2 Times in 2 Posts	Ordered my Gates stat from Rockauto http://www.rockauto.com/catalog/moreinfo.php?pk=1862100 yesterday about midday and it arrived 9:30 am this morning - brilliant service! (and yes, bloomin great big box)

17th August 2011, 08:44	#1029
craig8661 Posted a thing or two rover 75 tourer cdt Join Date: Feb 2011 Location: Chesterfield Posts: 1,924 Thanks: 3 Thanked 4 Times in 4 Posts	im waiting for my gates stat orderd it from a different company cost me £12 deliverd from the mainland this one is going to be fitted into helens 75 as mine i had a new stat of jules for mine __________________ http://i984.photobucket.com/albums/a...y%20se/sig.jpg spoilt as i own a cdt auto connoisseur se cdt auto member 829 mods so far synergy 2 heated washer jets cant really add anything else as it has it all lol

18th August 2011, 10:53	#1030
scouseeric Passed Away 75 contemporary se cdti Join Date: Dec 2010 Location: Liverpool Posts: 1,579 Thanks: 0 Thanked 0 Times in 0 Posts	Well its a lovely day so i decided to get this 'stat fitted. the problem i had cutting the band i found was actually cutting from front to rear which damaged the hose because of the lip on the plastic housing. So anyone about to do the job, take care and cut the band from the back toward the front which is flat, hope that makes sense! took the car for a new tyre, a 3 mile trip with the diagnostics on and the temp reached 82c, better than its 74c max before. Soon see what the mpg goes to next week when its filled! Eric

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