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3.2 Manual, exhaust clip.

Ceramicolive
Posts: 26
Joined: Sun Oct 15, 2017 2:10 pm

3.2 Manual, exhaust clip.

Postby Ceramicolive » Mon Sep 23, 2019 10:58 am

The car has never got to full operating temp since I have owned it and consistently will drop down to cold when on a run, I had a quick look and it seemed a doddle, two bolts, quick change of thermostat, top up with coolant and bobs your mothers brother.

Well It didn't go that well, I must point out I was careful to tighten the bolts evenly but even that didn't stop this happening.

IMG_20190923_101603734.jpg
IMG_20190923_101603734.jpg (1.27 MiB) Not viewed yet

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IMG_20190923_101607156_HDR.jpg (1.38 MiB) Not viewed yet


I have just found a replacement online so the car is laid up in my garage until that arrives. I'm unsure of why it broke so easily, perhaps it already had a stress fracture I couldn't see, I'm just hoping the next one doesn't do the same.

Any advice from those who have done a successful change?
Last edited by Ceramicolive on Sat Oct 05, 2019 5:40 pm, edited 1 time in total.

katar83
Posts: 2752
Joined: Tue Aug 23, 2011 11:17 am
Location: Cambridge

Re: 3.2 Manual, thermostat woes!

Postby katar83 » Mon Sep 23, 2019 12:21 pm

Did you try to fit an o-ring? Lots of thermostats will come with an o-ring, it should not be used here. When you fit the thermostat into its cover and try to fit it all onto the housing it should fit flush with the housing with barely any gap. When tightening it all up, if you feel its getting tighter and there is still a gap between cover and housing, stop immediately, there is something wrong and you should undo and check everything again.
Basically any force on each side of the cover when its not flush with the housing and you'll break it.
I've broke two myself over the years, these days when changing thermostat I get to it like to a newly born child :lol:
1997, 4.0 LWB X300 - Unlucky car but still a daily driver.
1988, 3.6S XJS - Never ending restoration project.
1994, 3.2S X300 - Accident damaged, October 2015. Gone!
1994, 3.2S XJ40 - Long gone.

Ceramicolive
Posts: 26
Joined: Sun Oct 15, 2017 2:10 pm

Re: 3.2 Manual, thermostat woes!

Postby Ceramicolive » Mon Sep 23, 2019 4:37 pm

katar83 wrote:Did you try to fit an o-ring? Lots of thermostats will come with an o-ring, it should not be used here. When you fit the thermostat into its cover and try to fit it all onto the housing it should fit flush with the housing with barely any gap. When tightening it all up, if you feel its getting tighter and there is still a gap between cover and housing, stop immediately, there is something wrong and you should undo and check everything again.
Basically any force on each side of the cover when its not flush with the housing and you'll break it.
I've broke two myself over the years, these days when changing thermostat I get to it like to a newly born child :lol:


Hi Thanks for the tip, I've got another housing on the way and yes embarrassingly I did try to fit it with the o ring against my better judgement. Every day is a school day :D

abercanadian
Posts: 1330
Joined: Tue Oct 16, 2012 6:50 am
Location: Vancouver Island

Re: 3.2 Manual, thermostat woes!

Postby abercanadian » Mon Sep 23, 2019 6:31 pm

Katar - I think the X300 is an o-ring delete but the 40 uses one? Mine always does. The o-ring has to be on the right side of the stat though and I may be mistaken but isn't the o-ring in the pic under instead of over the stat?

Larry
Image
94 XJ40 VDP vin 701729
Oyster Metallic/Doeskin on Aero Alloys
230,000 Kilometers 143,000 Miles
Daily Driver

94 XJ40 SOVEREIGN vin 703632
Diamond Blue Metallic/Barley
111,000 Kilometers/69,000 Miles
Parts Car

katar83
Posts: 2752
Joined: Tue Aug 23, 2011 11:17 am
Location: Cambridge

Re: 3.2 Manual, thermostat woes!

Postby katar83 » Mon Sep 23, 2019 7:24 pm

Correct Larry, X300 = no o-ring, but 40 does use one. Probably why so many people break these, btw these covers are still available from JCP for ~£50
1997, 4.0 LWB X300 - Unlucky car but still a daily driver.
1988, 3.6S XJS - Never ending restoration project.
1994, 3.2S X300 - Accident damaged, October 2015. Gone!
1994, 3.2S XJ40 - Long gone.

Ceramicolive
Posts: 26
Joined: Sun Oct 15, 2017 2:10 pm

Re: 3.2 Manual, exhaust clip.

Postby Ceramicolive » Sat Oct 05, 2019 5:42 pm

New housing arrived and was a ten minute job, in other news I also fitted a pair of straight pipes from Simply Performance to replace the existing back boxes, Fruity!

https://youtu.be/lrDqtt-nL6k

naki_k
Super Moderator
Posts: 28654
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: 3.2 Manual, exhaust clip.

Postby naki_k » Thu Oct 10, 2019 5:03 am

Sporty.
How does it sound at motorway cruising speed?
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6 x2
93 6.0 XJ81 XJ12
94 4.0 XJR
94 4.0 Daimler
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

Morgan1
Posts: 164
Joined: Thu Dec 08, 2016 10:45 pm
Location: Aberdare, south Wales

Re: 3.2 Manual, exhaust clip.

Postby Morgan1 » Thu Oct 10, 2019 7:43 pm

How much were the back boxes please. I looked on the website but no prices.
1992 Jaguar xj6 3.2 litre.
2016 Audi A6 S line.
2016 Ford Fiesta zetec.

Ceramicolive
Posts: 26
Joined: Sun Oct 15, 2017 2:10 pm

Re: 3.2 Manual, exhaust clip.

Postby Ceramicolive » Sun Oct 13, 2019 12:12 pm

naki_k wrote:Sporty.
How does it sound at motorway cruising speed?


I'm not sure as I haven't driven it on the motorway since I fitted them, it has the potential to be a bit droney depending on engine speed at a guess. I have the original back boxes in case I have a change of heart.

Ceramicolive
Posts: 26
Joined: Sun Oct 15, 2017 2:10 pm

Re: 3.2 Manual, exhaust clip.

Postby Ceramicolive » Sun Oct 13, 2019 12:16 pm

Morgan1 wrote:How much were the back boxes please. I looked on the website but no prices.


Here is a link

https://www.ebay.co.uk/itm/JAGUAR-XJ8-X ... 2749.l2649

bear in mind the original tips internal diameter isn't big enough to reuse with the new pipes, I ordered some larger XJR style tips from adamesh.