XK8 / XKR ( X100 ) 1996 - 2006

Replacing Thermostat Housing and Tower

Thread Tools
 
Search this Thread
 
Old Feb 23, 2012 | 08:24 PM
  #1  
berlin1977's Avatar
Thread Starter
|
Senior Member
Joined: Jan 2012
Posts: 404
Likes: 70
From: Newberry SC
Default Replacing Thermostat Housing and Tower

Just wanted to thank Gus and GGG for their assistance. Your detailed pics of the tower change out was a great help the bent 8 mm wrench was the trick. I did make one small change. I bent one for the open end and one for the box end. I also add a piece of 3/8 in (10 mm) square key stock to the wrenches making them 7 to 8 inches long. This made the wrench long enough to clear the top of the tower. Then used a 3/8 or 10 mm to remove and reinstall the bolts.
Graham thanks for the your help with the drain plug and sensor issue. Cleaned and dryed them out and all the codes cleared.

Life is easy when you have a group of Jag nuts to assist.
Jim
 
Reply
Old Feb 24, 2012 | 01:06 AM
  #2  
ken qv's Avatar
Member
Joined: Apr 2010
Posts: 91
Likes: 11
From: Tampa
Default

good deal... i did mine yesterday too!
 
Attached Thumbnails Replacing Thermostat Housing and Tower-p1011979.jpg  
Reply
Old Feb 24, 2012 | 02:27 AM
  #3  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,003
From: Durham, UK
Default

Originally Posted by ken qv
good deal... i did mine yesterday too!
Is that a black plastic screw cap on your replacement tower?

The one I used, and all the ones I've seen advertised, have aluminium caps.

Graham
 
Reply
Old Feb 24, 2012 | 08:47 AM
  #4  
ken qv's Avatar
Member
Joined: Apr 2010
Posts: 91
Likes: 11
From: Tampa
Default

Yes... it came with an aluminum cap BUT the seal seems different and i don't remember exactly when/who but a guy that works on these and has for many years says that the aluminum caps have often developed small leaks, but used in conjunction with a new plastic cap= Never a problem. I just took his word for it and threw the aluminum one in my parts box...just in case
 
Reply
Old Feb 24, 2012 | 09:03 AM
  #5  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,003
From: Durham, UK
Default

Originally Posted by ken qv
Yes... it came with an aluminum cap BUT the seal seems different and i don't remember exactly when/who but a guy that works on these and has for many years says that the aluminum caps have often developed small leaks, but used in conjunction with a new plastic cap= Never a problem. I just took his word for it and threw the aluminum one in my parts box...just in case
I got mine from British Parts UK. The first one they sent was a roughcast finish exactly like yours but the cap wouldn't screw down. There was no chance of a watertight fit.

Sent it back. They replaced it immediately without question and also refunded my postage cost. The replacement was a smooth casting:

Replacing Thermostat Housing and Tower-xk8-4.0-new-thermostat-housing-fitted.jpg

The cap fitted perfectly and the car is now sold but I'll remember your comment on using a new plastic cap if I need to fit an aluminium replacement tower on this car.

Thanks,
Graham
 
Reply
Old Feb 24, 2012 | 03:09 PM
  #6  
Gus's Avatar
Gus
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2008
Posts: 11,356
Likes: 2,234
From: Berlin Md.
Default

Kudos to you. On the road again.
 
Reply
Old Feb 24, 2012 | 05:34 PM
  #7  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,003
From: Durham, UK
Default

Originally Posted by berlin1977
Just wanted to thank Gus and GGG for their assistance. Your detailed pics of the tower change out was a great help the bent 8 mm wrench was the trick. I did make one small change. I bent one for the open end and one for the box end. I also add a piece of 3/8 in (10 mm) square key stock to the wrenches making them 7 to 8 inches long. This made the wrench long enough to clear the top of the tower. Then used a 3/8 or 10 mm to remove and reinstall the bolts.
Graham thanks for the your help with the drain plug and sensor issue. Cleaned and dryed them out and all the codes cleared.

Life is easy when you have a group of Jag nuts to assist.
Jim
Jim,

That 'super wrench' is worth posting a photo with measurements for those who are looking to solve the same tower replacement problem in future.

Graham
 
Reply
Old Feb 25, 2012 | 10:44 PM
  #8  
EZDriver's Avatar
Veteran Member
Joined: Dec 2010
Posts: 2,125
Likes: 279
From: Holly Lake Ranch, Texas
Default

Are we talking about a new designed plastic cap or just a new one of the existiong design?
 
Reply
Old Feb 28, 2012 | 12:17 PM
  #9  
2000CAXK8's Avatar
Senior Member
Joined: Nov 2010
Posts: 199
Likes: 5
From: LONG BEACH
Default

I am gonna be getting my tstat house via UPS in the next 5 hours or so...

Question: Can I siphon the coolant out of the Thermostat or do I have to remove the plug from the bottom of the radiator?
 
Reply
Old Feb 28, 2012 | 12:25 PM
  #10  
Gus's Avatar
Gus
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2008
Posts: 11,356
Likes: 2,234
From: Berlin Md.
Default

Draining it from the radiator is the right way to go.
 
Reply
Old Feb 28, 2012 | 01:23 PM
  #11  
2000CAXK8's Avatar
Senior Member
Joined: Nov 2010
Posts: 199
Likes: 5
From: LONG BEACH
Default

Grrrr, I looked everywhere and can't find the drain plug. Is it hidden by the snow dam?

EDIT: looks like its on the back of the radiator facing the passenger seat. I was expecting it to be on the bottom facing down.

http://matt.zenfolio.com/xk-coolant-...tat---v1-1.pdf
 

Last edited by 2000CAXK8; Feb 28, 2012 at 01:35 PM.
Reply
Old Feb 28, 2012 | 01:36 PM
  #12  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,003
From: Durham, UK
Default

Originally Posted by 2000CAXK8
Grrrr, I looked everywhere and can't find the drain plug. Is it hidden by the snow dam?
The radiator drain plug is lower right hand side facing towards the engine. You're looking for a black plastic plug with a crossed slotted head:

Replacing Thermostat Housing and Tower-radiator-drain-plug.jpg

Move to one side as you undo it.

Graham
 

Last edited by GGG; Feb 28, 2012 at 05:50 PM.
Reply
Old Feb 28, 2012 | 03:49 PM
  #13  
2000CAXK8's Avatar
Senior Member
Joined: Nov 2010
Posts: 199
Likes: 5
From: LONG BEACH
Default

well I hit a minor hiccup. I drained the radiator via the plug on the bottom of the radiator but because the thermostat is cold and closed there is coolant filling the bottom half of this:



I think i'll have to siphon that out after all
 
Reply
Old Feb 28, 2012 | 04:14 PM
  #14  
Gus's Avatar
Gus
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2008
Posts: 11,356
Likes: 2,234
From: Berlin Md.
Default

I think you will find the coolant leakage is minimal at this point just open it slowly.
 
Reply
Old Feb 28, 2012 | 05:13 PM
  #15  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,003
From: Durham, UK
Default

Try to avoid coolant spillage over the serpentine belt either by wrapping with a large plastic bag or removing it. Once these have had coolant on them they start to squeak.

Graham
 
Reply
Old Feb 29, 2012 | 03:43 AM
  #16  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,003
From: Durham, UK
Default

Originally Posted by berlin1977
.........the bent 8 mm wrench was the trick. I did make one small change. I bent one for the open end and one for the box end. I also add a piece of 3/8 in (10 mm) square key stock to the wrenches making them 7 to 8 inches long. This made the wrench long enough to clear the top of the tower. Then used a 3/8 or 10 mm to remove and reinstall the bolts.
Jim
Photos of berlin1977's wrenches:

Replacing Thermostat Housing and Tower-berlin1977-wrench-01.jpg

Replacing Thermostat Housing and Tower-berlin1977-wrench-02.jpg

Clearly shows the bend needed and how the square key extension makes it easier to remove and reinstall the bolts.

Thanks to Jim for this.
 
Reply
Old Mar 2, 2012 | 10:25 PM
  #17  
berlin1977's Avatar
Thread Starter
|
Senior Member
Joined: Jan 2012
Posts: 404
Likes: 70
From: Newberry SC
Default

Thanks Graham for posting the pics, I am sorry that I have not responded sooner but it has been on of those 70 hr work weeks. Gus had used/cut a slot in the bolts so a screw driver could be used. Which differently made the instalation easier. But I did not have a vise to cut the slots in the bolts. I had bent the 8 mm wrench and tried to use the vise grips but could only get about a 1/8 of a turn on the bolt. I purchased a second 8 mm wrench and bent them for open and box end. added the 3/8 in or 10 mm key stock to the back off the wrench which gave additional clearence from the tower. With the key stock it made the wrench between 7-8 inches in length, which cleared the top of the tower. (1 st. pic) Used a 3/8 in or 10mm wrench on the key stock to remove the back 2 bolts. Like the old saying "There is more then one way to skin a CAT!!" My cost was around $26 bucks. I hope this helps Jim
 
Reply
Old Jun 7, 2014 | 12:07 PM
  #18  
Richy_T's Avatar
Senior Member
Joined: Oct 2011
Posts: 104
Likes: 3
From: Dickson, TN
Default

Just replaced my thermostat housing with the aluminum one yesterday and now it's leaking at the top. :/
 
Reply
Old Jun 7, 2014 | 03:27 PM
  #19  
RJ237's Avatar
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2010
Posts: 8,833
Likes: 2,920
From: Douglasville Ga.
Default

There have been a number of reports on leaking covers. Who supplied the tower? Often the threads are not cut properly, so take the o-ring out and make sure it screws on a little further. If that is not the problem, look for a larger o-ring.
 
Reply
Old Jun 7, 2014 | 03:36 PM
  #20  
jonscot's Avatar
Senior Member
Joined: Apr 2014
Posts: 233
Likes: 71
From: Stuart, FL
Default

would a crow-foot wrench on a socket extension fit here - its raining outside, so I don't have the chance to go try it...
 
Reply



All times are GMT -5. The time now is 01:06 AM.