↓ Advertise on Defender2 ↓

Home > Td5 > pressure in a cold expansion chamber
Post Reply  Down to end
Page 1 of 1
Print this entire topic · 
steven



Member Since: 20 Sep 2013
Location: weil der stadt
Posts: 10

Germany 1999 Defender 110 Td5 USW Baltic Blue
pressure in a cold expansion chamber
Hello, just opened the cap on my exp chamber with a completely cold engine. There was a fair amount of pressure released on opening, and a big bubble or two surfaced in the tank. In recent days I've been finding a spray of coolant on the underside of my hood above the exp tank cap.

Should there be pressure in a cold coolant system? If the tank holds pressure, how am I getting coolant on the underside of my hood?

Thanks for any advice.
Post #283943 21st Nov 2013 9:36am
View user's profile Send private message View poster's gallery Reply with quote
diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 6095

United Kingdom 2006 Defender 110 Td5 SW Epsom Green
Exactly the same symptons as I just had with my project90.

Cracked head. Crying or Very sad Crying or Very sad causing the cooling system to pressurise. and funnily enough, mine would "hold pressure" as yours is, for a good 3 or 4 days after the engine was last started.

It steadily got worse. start the engine and the top coolant hose would be rock solid in about 15 seconds.

Then if I put my foot down, it would blow out the top of the expansion tank.

Then it burst a hose, and blew another one off the radiator.

I changed the head then. all seems good now with a replacement head.

On the plus side, it's quite easy to change the heads over on Td5's.
Post #283962 21st Nov 2013 11:01am
View user's profile Send private message View poster's gallery Reply with quote
steven



Member Since: 20 Sep 2013
Location: weil der stadt
Posts: 10

Germany 1999 Defender 110 Td5 USW Baltic Blue
Thanks, D.J. I suspected as much. Guess the son and I will replace the head. Any recommendations for a good manual to follow, and a good parts supplier? Would be nice to have a comprehensive list of everything I need so I can buy everything together and then just get it done.
Post #283969 21st Nov 2013 11:39am
View user's profile Send private message View poster's gallery Reply with quote
Anderzander



Member Since: 08 Feb 2011
Location: Lancashire
Posts: 1000

United Kingdom 
I'd 2nd that request - a good 'head swap' guide would be deeply appreciated ...
Post #284143 21st Nov 2013 10:34pm
View user's profile Send private message View poster's gallery Reply with quote
Orangeboy



Member Since: 24 Sep 2013
Location: Uk
Posts: 48

Think turner eng sell a fitting kit with everything in , just not sure if it fits just there new heads


http://www.turnerengineering.co.uk/acatalo....html#a445
Post #284184 22nd Nov 2013 8:13am
View user's profile Send private message View poster's gallery Reply with quote
jimbob7



Member Since: 06 Jul 2013
Location: uk
Posts: 2055

FYI,pretty sure general consensus is to buy genuine LR headgasket. Pov.spec,ftw. 2006, 110,TD5.
Post #284245 22nd Nov 2013 11:42am
View user's profile Send private message View poster's gallery Reply with quote
jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8051

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
diesel_jim wrote:


On the plus side, it's quite easy to change the heads over on Td5's.


which was a blessing for us this year in Croatia when we changed one before the comp even started!

change the engine a day later ........ Shocked

you soon get bored doing it in the rain under canvas! Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #284408 22nd Nov 2013 8:38pm
View user's profile Send private message View poster's gallery Reply with quote
kharnsflair



Member Since: 17 Sep 2013
Location: South
Posts: 12

Hi all,

This thread has me thinking ( Shocked ), my expansion chamber is always pressurised when cold, even if it's stood for over a week without being used. But my Defender seems to run fine when I use it and the coolant level remains constant (I also saw a Youtube video of a stream of bubbles coming up into an expansion chamber for a running engine with a cracked head, which mine doesn't do, so no problems right???).

So, how much pressure in a cold expansion chamber is too much pressure and a sympton of a problem?

Thanks.
Post #287016 2nd Dec 2013 10:38am
View user's profile Send private message View poster's gallery Reply with quote
yobbie



Member Since: 15 Nov 2010
Location: Isle of Wight
Posts: 713

United Kingdom 1999 Defender 90 Td5 Heritage LE Bronze Green
Mine held pressure & occasionally I could hear bubbling but couldn't see them, eventually it started to use coolant (very small amounts) then eventually did the same as diesel Jim's. Big Cry
Post #287032 2nd Dec 2013 1:15pm
View user's profile Send private message View poster's gallery Reply with quote
steven



Member Since: 20 Sep 2013
Location: weil der stadt
Posts: 10

Germany 1999 Defender 110 Td5 USW Baltic Blue
Got a new head
from Turner & Co. They had it here in only 2 days. Was going to install it myself last weekend, but never got the time. A local garage will have it starting tomorrow. I'm looking forward to seeing what kind of a difference it makes, having a head that doesn't leak. I've come to the conclusion mine has leaked since I got it, a year or so ago.
Post #287073 2nd Dec 2013 5:48pm
View user's profile Send private message View poster's gallery Reply with quote
kharnsflair



Member Since: 17 Sep 2013
Location: South
Posts: 12

A thread back from the dead - but finally got mine into a garage, and the head gasket it going. The head is off to be tested.

Expensive day to the workshop.
Post #346963 22nd Jul 2014 12:47pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 1 of 1
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums