Metal thermostat housing KV6 - Page 4

Jules · 25th February 2009, 12:02

Just looked on a new OEM housing

Part No PEM 101050
The material is Polyamide Nylon PA66 and the operation temps are:

-78 Deg C to 121.1 Deg C so close to the upper limit temp wise.

Here's the info: http://www.polymerweb.com/_datash/pa66.html

Bernard LPG · 25th February 2009, 12:12

THat spec sheet says 'degrees F'

Jules · 25th February 2009, 12:34

Thanks Bernard
I've converted the post which now puts a different light on it doesn't it

workaholic_ro · 25th February 2009, 14:46

Quote:

Originally Posted by BigRuss

Well I'm only going off the tech info.

http://www.dynalabcorp.com/technical_info_abs.asp

Russ

Actually I don't think it is a mistake, just an improper description. It is not about melting, polymers has a so called "vicat point", it shows the temperature which starts to cause the material distortion. It is oftenly used in thermoforming, the required temperature for this process is above but close to this point.
If you consider that a material starts to melt when distorting you can call it "melting temperature".

workaholic_ro · 25th February 2009, 14:52

Quote:

Originally Posted by majedm75

I shall have my thermostat checked when I will have the cam belts changed next month. My car has also been loosing some coolant liquid since last summer (all in all: about 1 litre refill since then)
I will mention his thread to the garage manager as well as he quoted me a lot of stuff ranging from hoses to gaskets etc... and did not mention the thermostat...

It's a Vee and loosing coolant.

Don't bother to look anywhere else. 99% it is the thermostat. Look for orange stains between the cylinder banks. You only have to remove the engine cover for that. An 8mm socket wrench to undo two screws and a small battery torch.

EXMSRalph · 25th February 2009, 17:11

The plastic that the thermostat housing and attached pipes is made out of is specifically PA66-GF30

Jules · 25th February 2009, 17:33

No wonder they fail then!
Shame the housing wasn't originally made out of Peek-gf30

But as mentioned before, the seam of the very similar housing situated on the front of the L - Series engine doesn't seem to fail

kaiser · 25th February 2009, 18:36

They should have been made out of metal in the first place.
It is mind boggling what is going on sometimes. I guess the majority of engines made today are issued with such sub-standard stuff.
It will last the guarantee period, then who cares.
Modern mentality?
Absurd.
Just to add from the spec sheet of this plastic mentioned above, it clearly states service temperatures up to 80 degrees. If this is an undisputed fact, then the designers have knowingly used an inferior material. If Rover was still in existence, I guess some enterprising soul could actually sue for damages. There must be thousands of people who have had serious economic issues because of this incompetence/negligence.

JohnDotCom · 25th February 2009, 18:47

I believe BMW's suffer very similar type fault on some models according to neighbour who has this sort of Problem at the Mo.
Not sure what model it is off hand.

kaiser · 25th February 2009, 19:14

In view of the above, then for the V6 guys, we are talking the thermostat housing itself, the 90 degree pipe sitting next to the thermostat, the thick pipe linking the thermostat to the back of the engine, the elbow on the radiator, possibly the radiator, possibly the expansion box, although the last two might be different materials.
For the 1.8T it will be the T-piece, the elbow on the radiator and the quick connector to the engine/block and, possibly the radiator/expansion box.

As an add on, I saw a picture of the oil pick up (in Haynes), looks like the same sh**

25th February 2009, 12:02	#31
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	Pe66 Just looked on a new OEM housing Part No PEM 101050 The material is Polyamide Nylon PA66 and the operation temps are: -78 Deg C to 121.1 Deg C so close to the upper limit temp wise. Here's the info: http://www.polymerweb.com/_datash/pa66.html __________________ [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 Last edited by JohnDotCom; 25th February 2009 at 15:00..

25th February 2009, 12:34	#33
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	Thanks Bernard I've converted the post which now puts a different light on it doesn't it __________________ [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

25th February 2009, 17:33	#37
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	No wonder they fail then! Shame the housing wasn't originally made out of Peek-gf30 But as mentioned before, the seam of the very similar housing situated on the front of the L - Series engine doesn't seem to fail __________________ [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 Last edited by Jules; 25th February 2009 at 17:40..

25th February 2009, 18:36	#38
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	They should have been made out of metal in the first place. It is mind boggling what is going on sometimes. I guess the majority of engines made today are issued with such sub-standard stuff. It will last the guarantee period, then who cares. Modern mentality? Absurd. Just to add from the spec sheet of this plastic mentioned above, it clearly states service temperatures up to 80 degrees. If this is an undisputed fact, then the designers have knowingly used an inferior material. If Rover was still in existence, I guess some enterprising soul could actually sue for damages. There must be thousands of people who have had serious economic issues because of this incompetence/negligence. Last edited by kaiser; 25th February 2009 at 18:42..

25th February 2009, 12:12	#32
Bernard LPG I really should get out more....... 75 V6 Saloon 2003 LPG MGZT V8 260 LPG Join Date: Dec 2006 Location: Evesham Posts: 2,134 Thanks: 0 Thanked 1 Time in 1 Post	THat spec sheet says 'degrees F'

25th February 2009, 17:11	#36
EXMSRalph Gets stuck in ZS180, MGF, Rover 400, MG Montego Join Date: Sep 2007 Location: Sittingbourne Posts: 534 Thanks: 0 Thanked 0 Times in 0 Posts	The plastic that the thermostat housing and attached pipes is made out of is specifically PA66-GF30

25th February 2009, 18:47	#39
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	I believe BMW's suffer very similar type fault on some models according to neighbour who has this sort of Problem at the Mo. Not sure what model it is off hand.

25th February 2009, 19:14	#40
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	In view of the above, then for the V6 guys, we are talking the thermostat housing itself, the 90 degree pipe sitting next to the thermostat, the thick pipe linking the thermostat to the back of the engine, the elbow on the radiator, possibly the radiator, possibly the expansion box, although the last two might be different materials. For the 1.8T it will be the T-piece, the elbow on the radiator and the quick connector to the engine/block and, possibly the radiator/expansion box. As an add on, I saw a picture of the oil pick up (in Haynes), looks like the same sh**