MECCANO Posted December 24, 2007 Share Posted December 24, 2007 In the process of cleaning up the 200tdi head this evening I discovered under the layers s of carbon, cracks between the inlet/exhaust valves on Pot 3 that propagates about 4mm from the surface. Also cracking between the holes for the injector and glow plug, which look to go deeper. I presume the head is toast, and nothing can be done with it? When the engine was purchased it ran well. Do I reassemble it, and hold out till the head completely fails? I won’t be able to afford a new one out right... so do good second hand ones exist? Any help in this moment of despair is greatly appreciated... Makes you want a V8 Chris Quote Link to comment Share on other sites More sharing options...
deepmud Posted December 26, 2007 Share Posted December 26, 2007 Mmmmm bummer. bump to the top. FWIW I've had a Renault TD and a VW TD apart, with cracks like beween your valves on every cylinder, research for those motors found it is considered "normal" and ignored, just continue rebuild as normal. I hope you get good news like that too. Quote Link to comment Share on other sites More sharing options...
jimfoo Posted December 26, 2007 Share Posted December 26, 2007 You might be able to get them welded. Like Deepmud said, the one between the valves wouldn't bother me much, but the others would. Quote Link to comment Share on other sites More sharing options...
OilIT Posted December 26, 2007 Share Posted December 26, 2007 you could get it pressure tested to see what transpires - that way at least you will know...I had it done on a mercedes head once, but from memory it cost about 400£ - not sure what new head costs - but if its the same as a disco head (not sure), then you could get a whole car with engine for that price ! Quote Link to comment Share on other sites More sharing options...
paintman Posted December 26, 2007 Share Posted December 26, 2007 Run it till it goes. Quote Link to comment Share on other sites More sharing options...
MECCANO Posted December 27, 2007 Author Share Posted December 27, 2007 Well i looked further today at the injector/ glowplug holes. Similarly they only travel about 4mm into the face of the head. Pot 2 is also begining to crack on these holes, but no way near as bad as Pot 3. When stripping the head i found that the valve stem seals on these two chambers were completely nackered, practically falling off. It looks like oil has been pouring in to these cyclinders for a while. Would this be the cause of the cracking? Cheers for the help so far Chris Quote Link to comment Share on other sites More sharing options...
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