Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551
Head gasket thickness
Hi I'm rebuilding my engine and need to know what the clearance should be between the block and head.I can measure piston protrusion to give me the thickness but not sure how much extra to allow and wondered if there was a figure for this if that makes sense Wanted D4s non runners pm for competitive price.
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25th Jun 2011 11:19 pm
Russell
Member Since: 23 Aug 2007
Location: Kent
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Would have thought that there would have only been one thickness.MY17 D5 1st Edition Namib Orange
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26th Jun 2011 6:04 am
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
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Morning Russell no there are 4 or 5 sizes Wanted D4s non runners pm for competitive price.
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26th Jun 2011 7:28 am
Gazavich
Member Since: 07 Jun 2005
Location: Thorpe surrey
Posts: 642
Depends on what has been taken off the head.HSE TDV6 Silver : "Avin it large"
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
Yes normally there are standard gaskets and then thinner ones when the head has been skimmed, assumin your engine has not been apart before I would have thought it should be the thicker/standard gasket. Do you know the history of the car?
The gaskets always used to be marked up with their thickness/number which would allow the dealer to supply the same/equivalent, if you have the old gasket, have a look and see what marks it has on it, might be as simple as nicks/notches on one side (from memory I think that is what Peugeut used). May be worth talking to Nixck he may be able to tell you if there are any identifying marks on them and what they are.MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
D3 S spec Silver Sold and gone
Tow bar, full length roof bars, side steps, tow bar storage unit, surround camers.
D4 camera club
Yes normally there are standard gaskets and then thinner ones when the head has been skimmed,
Forgive me for being thick, surely if you skim the head you need a thicker gasket not thinner to maintain compression? or am i missing something?Stvmor
26th Jun 2011 11:26 am
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551
Hi all my old gaskets have 3 notches on,the heads have not been skimmed, what im doing is replacing the block and wanted to measure it all properly and get the right gaskets instead of just putting the middle of the road one's on. Wanted D4s non runners pm for competitive price.
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26th Jun 2011 11:54 am
Russell
Member Since: 23 Aug 2007
Location: Kent
Posts: 10564
stvmor wrote:
Russell wrote:
Yes normally there are standard gaskets and then thinner ones when the head has been skimmed,
Forgive me for being thick, surely if you skim the head you need a thicker gasket not thinner to maintain compression? or am i missing something?
Yes you are right MY17 D5 1st Edition Namib Orange
MY15 D4 HSE Kaikoura Stone
MY12 D4 HSE Nara Bronze Sold and gone
MY11 D4 HSE Stornaway Grey Sold and gone
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26th Jun 2011 12:33 pm
DG Site Moderator
Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50979
This might help
Quote:
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.
Member Since: 11 Mar 2009
Location: Somerset
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See I Knew someone on here would know,they always do top man DG Wanted D4s non runners pm for competitive price.
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26th Jun 2011 2:08 pm
Roger 47
Member Since: 25 Oct 2008
Location: Exmoor Somerset
Posts: 58
Hi Woody 32.
What happened to your engine to warrant a rebuild?1988 Range Rover
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26th Jun 2011 4:44 pm
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551
Hi Roger I had a sudden big end failure, no apparent reason,i change the oil every 6k always use genuine filters seems there's a few of the early disco's this has happened too.I was thinking of doing a poll on here to see how many have had this problem,cause its not very good after only 58k i bought this car new and its was meant to last me,how wrong was i.I guess there like marmite you either luv um or you hate um and i luv um Wanted D4s non runners pm for competitive price.
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Have you been able to source all the replacement components that you require without difficulty.
I thought that Land Rover were "difficult" and were insistant on supplying short engines, rather than blocks etc...
NJSSAm I Gammon or Woke ? - I neither know nor care.
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Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
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26th Jun 2011 5:07 pm
woody32 Site Sponsor
Member Since: 11 Mar 2009
Location: Somerset
Posts: 3551
Your right about the block i had to buy a short motor as you cant buy a crank or shells separately,I found a company that could supply me a crank but couldnt get any shells so may look into that when i have my old one apart,TLO/Nick has been a great help in sourcing all my parts Wanted D4s non runners pm for competitive price.
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26th Jun 2011 5:19 pm
grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6415
you should have head mounted camre to record all of it for car porn freaks like me and others lol
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