Lars L Posted March 13, 2007 Share Posted March 13, 2007 A new question again... But since this is the forum with the highest degree of know-how, it's also the place to ask about the tricky matters. I do however try to contribute whenever I can. The 200 Tdi engines use, as some may know, three different head gaskets depending on the protrusions of the pistons. The big Q is - does it really matter that much in real life? Can't I just get away with the thickest one and still be quite happy with the performance? Or, will the slightly lower compression be noticed? Quote Link to comment Share on other sites More sharing options...
Tonk Posted March 13, 2007 Share Posted March 13, 2007 assumng you're replacing the head gasket cos its blown, can you not just fit same thickness as the one you took out? Quote Link to comment Share on other sites More sharing options...
Lars L Posted March 13, 2007 Author Share Posted March 13, 2007 Nope, I'm renewing among other things all the bearings on the crank. Which as the book says, might "disturb" the protrusion of the slugs. The old pistons are however meant to go back, just changing the rings and dressing up the bores. By using the thickest gasket, I could order all necessary parts in one go, not having to wait a couple of weeks for a gasket after having measured properly. Quote Link to comment Share on other sites More sharing options...
Matt Neale Posted March 13, 2007 Share Posted March 13, 2007 Nope, I'm renewing among other things all the bearings on the crank. Which as the book says, might "disturb" the protrusion of the slugs. The old pistons are however meant to go back, just changing the rings and dressing up the bores.By using the thickest gasket, I could order all necessary parts in one go, not having to wait a couple of weeks for a gasket after having measured properly. Lars, use the thickest gasket - bottom line is you won't notice any real difference. Matt Quote Link to comment Share on other sites More sharing options...
Lars L Posted March 13, 2007 Author Share Posted March 13, 2007 Thanks, probably what I expected. The difference compared to my present 2,5 n/a will most likely be noticed anyway. Quote Link to comment Share on other sites More sharing options...
pigster Posted March 13, 2007 Share Posted March 13, 2007 I thought the thickness of gasket depended on how far the pistons protruded when fully extended., so therefore if the gasket is not thick enough - say goodbye to your head. Thanks, probably what I expected. The difference compared to my present 2,5 n/a will most likely be noticed anyway. Quote Link to comment Share on other sites More sharing options...
Tonk Posted March 13, 2007 Share Posted March 13, 2007 AFAIK 3 hole is the thickest you can get anyway Quote Link to comment Share on other sites More sharing options...
Guest WALFY Posted March 13, 2007 Share Posted March 13, 2007 IIRC 3 hole is the thickest you can get. I have heard of most dealerships just fitting the 3 hole gasket cos they can't be bothered to correctly measure piston protusion. At the end of the day the only difference it'll make is to reduce the compression by a miniscule amount.HTH Quote Link to comment Share on other sites More sharing options...
Les Henson Posted March 13, 2007 Share Posted March 13, 2007 Each hole or notch is worth 0.1mm and there's no way new shells will be that much different - they would nip the crank journal and lock it up. If you are not skimming the head or block deck, and are using the old pistons, then I would use the same thickness head gasket as before. Les. Quote Link to comment Share on other sites More sharing options...
western Posted March 13, 2007 Share Posted March 13, 2007 (edited) 200Tdi & 300Tdi cylinder head gasket sizes 1 hole 1.30mm ----- ERR5261 for piston protrusion between 0.50 to 0.60mm 2 hole 1.40mm ----- ERR5262 --------------------------------- 0.61 to 0.70mm 3 hole 1.50mm ----- ERR5263 --------------------------------- 0.71 to 0.80mm NO holes 1.60mm -- ERR7154 ------------ if higher than 0.80mm use the NO HOLE gasket. Hope that explains better Tony Please add to Technical Archive Edited March 14, 2007 by Les Henson Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted March 15, 2007 Share Posted March 15, 2007 For my 300Tdi, which has a 2-hole gasket as standard, the compression ratio afterwards is shown. If you're going to run higher boost or play silly with the engine, go for the thickest you can but otherwise standard will be fine. Quote Link to comment Share on other sites More sharing options...
Lars L Posted March 15, 2007 Author Share Posted March 15, 2007 Man, that was a serious reply! Quote Link to comment Share on other sites More sharing options...
Les Henson Posted March 15, 2007 Share Posted March 15, 2007 I know. Some people on here need to get a life! Les. Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted March 15, 2007 Share Posted March 15, 2007 And not use the latest gasket from LR either,its a multi layer shim thing that leaks at the front RH corner where the oil feed to the rockers is. Luckily the original gaskets from Elring are available elsewhere. Quote Link to comment Share on other sites More sharing options...
Neil90 Posted March 15, 2007 Share Posted March 15, 2007 And not use the latest gasket from LR either,its a multi layer shim thing that leaks at the front RH corner where the oil feed to the rockers is. Luckily the original gaskets from Elring are available elsewhere. This explains a lot. I've just done mine and I have a leak at the front RHS. Wish I'd read this earlier. Where do i get a better one? I thought I was doing the right thing buying genuine LR part (made in Brazil) Neil Quote Link to comment Share on other sites More sharing options...
Turbocharger Posted March 15, 2007 Share Posted March 15, 2007 Man, that was a serious reply! Well, I spent ages with my shoes and socks off working out the numbers when my engine was coming apart, I'm damn well going to show it off! Quote Link to comment Share on other sites More sharing options...
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