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disco 200tdi head gasket skim ??

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ChrisW70:

--- Quote from: SteveGoodz ---Is that right? I thought the gasket with no holes was actually the thickest one ~ sounds illogical which s why it stuck in my memory. Haven't got access to my workshop manual at the moment so can't check  [-o<

IIRC, the thickness of the gasket is determined by how far above the block the pistons protrude. If I'm right then it doesn't matter whether the head has been skimmed or not, the pistons will still stick up by the same amount.
--- End quote ---

That's correct, no hole is thickest, 2mm I think and it's dependent upon the protrusion of the piston above the block, absolutely nothing to do with whether the head has been skimmed.
A new head bolt set is worthwhile as the threads can stretch due to the tightening process when fitting the head. You can check the head with a true straight edge but I don't think it's something I'd rely on if it was me checking it plus there's the possibility of it being cracked.
There's a place by the villa ground but I only know how to get to it, not names or roads, sorry!

bogie:
You will need your head skimmin mate and have it pressure tested,its false accomony not to. They may only take 8 thou off but 200 heads bend like bananas,and while you are at it dont use those stupid cardboard head gaskets. A skim will cost £20,pressure test £25, 3 layer metal head gasket £30, manifold £7. I wouldn't bother with the bolts unless its an old lump,you can use the bolts 5 times,they are about £2-3 EACH!

Range Rover Blues:

--- Quote from: SteveGoodz on August 16, 2009, 16:04:55 ---
--- Quote from: doda456 on August 16, 2009, 15:46:18 ---3 holes is the fatest one, available, 
--- End quote ---

Is that right? I thought the gasket with no holes was actually the thickest one ~ sounds illogical which s why it stuck in my memory. Haven't got access to my workshop manual at the moment so can't check  [-o<

IIRC, the thickness of the gasket is determined by how far above the block the pistons protrude. If I'm right then it doesn't matter whether the head has been skimmed or not, the pistons will still stick up by the same amount.



--- End quote ---

That's my understanding too.

NiteMare:
if you know where Hoppers is (breakers yard under the Expressway) then go over the bridge (thru the lights) stay to the right where the road forks and about 3-400 yards up the road turn left,  300 yards down there is a set of grey steel fencing with big gates on the left, first building after that is the head reconditioners i use (dunno thier name or the road name but i've had loads of stuff done by them with no problems including hone and rings)  they can test, check and refurbish your head  if required ....

they'll probably be able to advise on the replacement gasket required or you may have to refer to your manual if piston protusion needs measuring, i've always taken thier advice with no problems

markyb:
just done this job on my 300tdi and long discussion about the head gasket.s  yeah the no holes is the thickest.  I had a 3 hole 1.5 and it now has a 1.6 no hole gasket on it . its running  no issues with that side of it.   

I heard both sides of the story and decided i will go to the thicker gasket as i dont want the valve hitting etc.   

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