Tightening Thermostat Housing

Reply Subscribe

Thread Tools

Search this Thread

Oct 29, 2015 | 07:21 PM

Topsales1

Thread Starter

Junior Member

Joined: Oct 2015

Posts: 4

Likes: 0

From: GA

Tightening Thermostat Housing

(2003 XJ8 - added by GGG)

Today, I replaced my thermostat. I have having a difficult time tighing the three brass screws. I'm unfamiliar with the threading but I cannot get all three screws to tighten at the same time are there any suggestions?

Last edited by GGG; Oct 30, 2015 at 02:33 AM. Reason: add Model & Year

Oct 29, 2015 | 07:52 PM

RJ237

Veteran Member

Joined: Dec 2010

Posts: 8,835

Likes: 2,924

From: Douglasville Ga.

It would be a help if we knew what model and year car you are working on.

Oct 29, 2015 | 09:06 PM

Topsales1

Thread Starter

Junior Member

Joined: Oct 2015

Posts: 4

Likes: 0

From: GA

I'm currently working on my 2003 XJ8

Oct 29, 2015 | 09:51 PM

motorcarman

Joined: Dec 2009

Posts: 13,695

Likes: 9,640

From: Wise County,TX

The factory thermostat housing has brass inserts but the bolts/screws are steel.
The inserts can become loose in the housing and you probably need to replace the housing assy.

bob gauff

Oct 29, 2015 | 11:13 PM

Addicted2boost

Veteran Member

Joined: Mar 2015

Posts: 3,125

Likes: 1,280

I swap the two hard to get at longer bolts on the back of the housing for two shorter bolts that hold the thermostat cover together.

Oct 30, 2015 | 02:39 AM

GGG

Joined: Dec 2011

Posts: 120,439

Likes: 17,009

From: Durham, UK

Quote:

Originally Posted by Topsales1

I've added Model & Year details to your original post from your reply to RJ237.

You mention 3 screws so you presumably have a Supercharged X308 (XJR) and not the Normally Aspirated (XJ8) which has 4 screws securing the Thermostat Housing?

Graham