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Cylinder heads Gasket

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haffisig

Member Since: 04 May 2017
Location: Reykjavik
Posts: 2

2007 Discovery 3 TDV6 Base 5 Seat Auto Barolo Black

Cylinder heads Gasket

Hi I´m now repairing my 276dt engine and now I have to chose right thickness of the cylinder head gasket can anyone tell me how I will do it so I will make the right chose!

23rd Sep 2017 9:42 pm

dgardel

Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

2014 Discovery 4 3.0 SDV6 XXV LE Auto Santorini Black

For the 2.7 same procedure as per 3.0.

From page 970 of the WORKSHOP MANUAL (click me to download)

Cylinder Head Gasket
The cylinder head gasket is a three-layer, laminated steel type and is available in five different thickness. The choice of gasket thickness is dependent on the maximum piston protrusion. Gasket thickness is identified by serrations cut into the front end of the gasket:

Click image to enlarge

To calculate the correct cylinder head gasket thickness, each piston must be measured at two points, with an average of the two measurements taken to determine the piston protrusion. The highest of the three measurements will determine the gasket required for that particular cylinder head.

• NOTE:
The difference between the maximum and minimum protrusion measurement in any one bank should not be greater than 0.1mm. It is permissible to have a different grade of gaskets between the LH and RH banks.

Last but not least...
JLR 3.0 TDV6 - PSA DT20C - Essential Rebu...uch more) Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

Last edited by dgardel on 24th Sep 2017 1:01 am. Edited 6 times in total

24th Sep 2017 12:13 am

lynalldiscovery

Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti Grey

This thread has a nice simple chart half way down first page
https://www.disco3.co.uk/forum/topic66924.html

24th Sep 2017 12:14 am

Exocet

Member Since: 24 Sep 2017
Location: Solihull
Posts: 7

2005 Discovery 3 TDV6 HSE Auto Zermatt Silver

I`m loosing coolant quite regularly and a local garage has said this may be the head gasket !
The theory being that because there are no obvious puddles that I must be loosing it internally not externally and in the coolant you can vaguely smell diesel!
Does this sound right to you guys and if so should I get it done sooner rather than later ?
Also Gaskets and labour would be what cost ball park ?

5th Oct 2017 9:49 am

ostosix

Member Since: 19 Mar 2017
Location: Lincoln
Posts: 305

2005 Discovery 3 TDV6 SE Auto Tonga Green

Few people told me you always use the thickest one on a diesel

5th Oct 2017 11:57 am

Exocet

Member Since: 24 Sep 2017
Location: Solihull
Posts: 7

What to avoid water breaking through ?

5th Oct 2017 12:00 pm

ostosix

Member Since: 19 Mar 2017
Location: Lincoln
Posts: 305

Suppose there more there to crush and seal. I think it may be just to be sure instead of the measuring mess about. These guys are all on a tight schedule.

5th Oct 2017 1:59 pm

Gareth
Site Moderator

Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26699

Why on earth would you ignore the workshop manual on an engine that is made to such close tolerances?

Maybe some of the less recommended companies out there offering "reconditioned" engines would do such a thing to save money, but these tolerances weren't worked out to pass the time.

5th Oct 2017 2:06 pm

ostosix

Member Since: 19 Mar 2017
Location: Lincoln
Posts: 305

Gaskets all cost the same. 0.2mm in it, not gonna make a huge difference id say, but its what they keep in stock

5th Oct 2017 4:06 pm

lynalldiscovery

Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

Exocet wrote:
I`m loosing coolant quite regularly and a local garage has said this may be the head gasket !
The theory being that because there are no obvious puddles that I must be loosing it internally not externally and in the coolant you can vaguely smell diesel!
Does this sound right to you guys and if so should I get it done sooner rather than later ?
Also Gaskets and labour would be what cost ball park ?

EGR cooler?

5th Oct 2017 4:23 pm

Erea

Member Since: 19 Mar 2012
Location: Munster
Posts: 1509

2006 Discovery 3 TDV6 Commercial Manual Zambezi Silver

Exocet wrote:
I`m loosing coolant quite regularly and a local garage has said this may be the head gasket !
The theory being that because there are no obvious puddles that I must be loosing it internally not externally and in the coolant you can vaguely smell diesel!
Does this sound right to you guys and if so should I get it done sooner rather than later ?
Also Gaskets and labour would be what cost ball park ?

As above there are other places to loose coolant other than the head gasket. Is there blowback in the coolant tank when the engine is running?
I'd rule everything else out first before the heads.

5th Oct 2017 4:41 pm

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