Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: kingplym on 26 June 2009, 21:58:27

Title: how to change a thermo stat
Post by: kingplym on 26 June 2009, 21:58:27
can someone please link me to the change a thermostat  page, i have had a tipple and cant seem to find it ::) ;) :y
Title: Re: how to change a thermo stat
Post by: Entwood on 26 June 2009, 22:02:01
Easiest way is to take it to the "Dynamic Duo" ... and watch them struggle !!! 

I was really glad it was them doing it, not me, when it wouldn't go back together the way it should ........ :)

Job was done, at the agreed price, in a very professional manner. I would recommend them to anyone .. :)

Title: Re: how to change a thermo stat
Post by: JamesV6CDX on 26 June 2009, 22:12:48
EGR nut off and EGR valve unplugged
Rear plenum breather hoses off
Throttle and cruise cables off
Rear multiram connector and vacc line off
Idle control valve and connector off
2 x Front air intake hoses off
2 x passenger side cable tray bolts off
4 x plenum bolts out, and remove air intake plenum

6 x torx bolts removed for upper manifold. E12 socket required and mid length extension bar.

Fuel injector connector off (large connector at rear of engine, connected to upper manifold).

Lower inlet divider off (more torx bolts!)

Rad hose off the coolant transfer pipe.

Bolt on the front side of the 2-4-6 head removed, (bolt that holds the dipstick tube, lifting eye and coolant transfer pipe).

Coolant transfer pipe seperated from stat housing, and removed.

Stat housing removed, with 2 torx bolts.

Re-fitting is reverse of removal, just ensure all mating faces are clean. Plenum bolts 6nm, ensure all O rings are kept.

It's a job that can be done DIY and will take a couple of hours  :y
Title: Re: how to change a thermo stat
Post by: JamesV6CDX on 26 June 2009, 22:14:14
Obviously, replace O rings on the front link pipe at the same time, you'll need to get these seperately
Title: Re: how to change a thermo stat
Post by: kingplym on 26 June 2009, 22:30:20
thanx boys but i really needed a pic cos im not sure there is a thermo housing or stat to be honest? :-/
Title: Re: how to change a thermo stat
Post by: Martin_1962 on 26 June 2009, 22:40:51
Take off cam belt, take off backing plate.

Break lug off pipe, saw through dip stick bracket, remove head, angle grind off bastard bolt.

Mine was horrible to do
Title: Re: how to change a thermo stat
Post by: kingplym on 26 June 2009, 22:42:35
w ww w w ww ww w w ww wwhat!!!!!!

surely you jest
Title: Re: how to change a thermo stat
Post by: al brown on 26 June 2009, 22:45:58
Spent about hour trying to remove hose from housing and ended up changing the stat with it still partially fitted. Took a while but at least the hose DROPPED OFF when I went to refit the securing bolt for it. Missus thought I lost a hand by my stream of queens english.
Title: Re: how to change a thermo stat
Post by: hotel21 on 26 June 2009, 22:54:59
Quote
w ww w w ww ww w w ww wwhat!!!!!!

surely you jest

Probably not but, there again, he always has to do things his own way rather than the way that the rest of the world does, as per the guide on here....   ::)
Title: Re: how to change a thermo stat
Post by: kingplym on 26 June 2009, 23:32:37
ah yes hotel 21 were is the guide on here please i need picture as i am only a loley sparky

thanx :y
Title: Re: how to change a thermo stat
Post by: hotel21 on 26 June 2009, 23:34:53
Quote
ah yes hotel 21 were is the guide on here please i need picture as i am only a loley sparky

thanx :y

how about this??

http://www.omegaowners.com/forum/YaBB.pl?num=1229464812

step 16 is the one that caused Martin the grief, I think.  Affectionately known as the B'astard Bolt.....  Loads of fun and amusement for the over 12's....   ;D


 :y
Title: Re: how to change a thermo stat
Post by: Entwood on 26 June 2009, 23:43:20
Quote
Quote
ah yes hotel 21 were is the guide on here please i need picture as i am only a loley sparky

thanx :y

how about this??

http://www.omegaowners.com/forum/YaBB.pl?num=1229464812

step 16 is the one that caused Martin the grief, I think.  Affectionately known as the B'astard Bolt.....  Loads of fun and amusement for the over 12's....   ;D


 :y

It was watching the ever so slightly smug grin on a certain gentlemans face as it came out oh so easily ....  but when he tried to refit it ... now that was a different story ........  :)  he then had to earn his fee ...... :)
Title: Re: how to change a thermo stat
Post by: kingplym on 26 June 2009, 23:44:24
just hwat i thought i dont have that silver housing in front of my inlet manfold. is that a prob> :(
Title: Re: how to change a thermo stat
Post by: al brown on 27 June 2009, 00:19:49
If you want to come over and diagnose my suspension pump fault I will help with your stat.
Al
Title: Re: how to change a thermo stat
Post by: kingplym on 27 June 2009, 01:54:18
oh come omn i must ve the only drunk person on sete
Title: Re: how to change a thermo stat
Post by: feeutfo on 27 June 2009, 02:07:17
Quote
just hwat i thought i dont have that silver housing in front of my inlet manfold. is that a prob> :(
I would think you do mate, that is the stat. Probably covered in crap and all tarnished. The one in the link is a new one. Yours wont look like that.

Re stage 16 and the bastard bolt, go easy with the 10 mill spanner on a torx bolt. It will round off if you give it too much welly if its stiff. And when re fitting try and get the parts all lined up with a bradle type tool/scriber/nail or similar in the hole. Hold the parts firmly still with one hand, remove the tool from the hole with the other and fit the bolt, should go straight in....should. :-)

Title: Re: how to change a thermo stat
Post by: Martin_1962 on 27 June 2009, 12:17:58
Quote
Quote
ah yes hotel 21 were is the guide on here please i need picture as i am only a loley sparky

thanx :y

how about this??

http://www.omegaowners.com/forum/YaBB.pl?num=1229464812

step 16 is the one that caused Martin the grief, I think.  Affectionately known as the B'astard Bolt.....  Loads of fun and amusement for the over 12's....   ;D


 :y


Mine rounded - so I left it for two years until I did the valve seals
Title: Re: how to change a thermo stat
Post by: Martin_1962 on 27 June 2009, 12:19:07
Quote
w ww w w ww ww w w ww wwhat!!!!!!

surely you jest


Nope rounded bastard bolt

Mind you I had to fit new valve seals else I would have taken the thermostat out without removing the CTP
Title: Re: how to change a thermo stat
Post by: VXL V6 on 27 June 2009, 14:40:42
Quote
Quote
w ww w w ww ww w w ww wwhat!!!!!!

surely you jest


Nope rounded bastard bolt

Mind you I had to fit new valve seals else I would have taken the thermostat out without removing the CTP

How would you replace the thermostat without removing the coolant transfer pipe?
Title: Re: how to change a thermo stat
Post by: Martin_1962 on 27 June 2009, 20:07:47
Quote
Quote
Quote
w ww w w ww ww w w ww wwhat!!!!!!

surely you jest


Nope rounded bastard bolt

Mind you I had to fit new valve seals else I would have taken the thermostat out without removing the CTP

How would you replace the thermostat without removing the coolant transfer pipe?


With the back cam belt cover removed - I think
Title: Re: how to change a thermo stat
Post by: JamesV6CDX on 28 June 2009, 01:43:38
Quote
Quote
Quote
Quote
w ww w w ww ww w w ww wwhat!!!!!!

surely you jest


Nope rounded bastard bolt

Mind you I had to fit new valve seals else I would have taken the thermostat out without removing the CTP

How would you replace the thermostat without removing the coolant transfer pipe?


With the back cam belt cover removed - I think

Yep, you can fit stat and link pipe as one item, if stripped to this level for other works  :y
Title: Re: how to change a thermo stat
Post by: Zuffenhausen on 28 June 2009, 05:57:55
Quote
EGR nut off and EGR valve unplugged
Rear plenum breather hoses off
Throttle and cruise cables off
Rear multiram connector and vacc line off
Idle control valve and connector off
2 x Front air intake hoses off
2 x passenger side cable tray bolts off
4 x plenum bolts out, and remove air intake plenum

6 x torx bolts removed for upper manifold. E12 socket required and mid length extension bar.

Fuel injector connector off (large connector at rear of engine, connected to upper manifold).

Lower inlet divider off (more torx bolts!)

Rad hose off the coolant transfer pipe.

Bolt on the front side of the 2-4-6 head removed, (bolt that holds the dipstick tube, lifting eye and coolant transfer pipe).

Coolant transfer pipe seperated from stat housing, and removed.

Stat housing removed, with 2 torx bolts.

Re-fitting is reverse of removal, just ensure all mating faces are clean. Plenum bolts 6nm, ensure all O rings are kept.

It's a job that can be done DIY and will take a couple of hours  :y

Should have had the thermostat changed as a precaution when the cam cover gaskets were done then. :-? :( :'(
Title: Re: how to change a thermo stat
Post by: Martin_1962 on 28 June 2009, 11:26:49
All depends how tight bastard bolt is.

Mine was loctited in and rounded >:(
Title: Re: how to change a thermo stat
Post by: JamesV6CDX on 28 June 2009, 12:08:57
Quote
All depends how tight bastard bolt is.

Mine was loctited in and rounded >:(

You need some irwin sockets Martin :y
Title: Re: how to change a thermo stat
Post by: psl on 28 June 2009, 13:06:08
is it worth replacing the B Bolt with a non torx bolt once its out?
Title: Re: how to change a thermo stat
Post by: JamesV6CDX on 28 June 2009, 14:47:30
Quote
is it worth replacing the B Bolt with a non torx bolt once its out?

Nope, torx is best....
Title: Re: how to change a thermo stat
Post by: shammster on 28 June 2009, 21:14:09

Can't agree with that, changed for a hex head, now can undo with a normal ring spanner, and if required a hammer!