rocky Posted August 13, 2008 Share Posted August 13, 2008 Hi, i get the head back on friday and i need to get the head gasket from landrover. the one i have removed had three holes, on measuring the protrusion with a dial gauge the readings are about 0.55 to 0.7. according the manual three holes should be for 0.7100 to 0.8. the head has been off at some point cos there is a nice ring mark on no.3 piston, cambelt probs no doubt. because a three hole gasket came off would it be safer to put a three hole back (don't want to put another gasket on it just yet). advice will be greatly appreciated. Regards, rocky. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 13, 2008 Share Posted August 13, 2008 I'd stick with what you took off if it were mine. Quote Link to comment Share on other sites More sharing options...
rocky Posted August 13, 2008 Author Share Posted August 13, 2008 Thanks, I will, the tolerances are so close i suppose it won't make much difference. With a bit of luck it will be mobile Friday morning. Rocky Quote Link to comment Share on other sites More sharing options...
Les Henson Posted August 13, 2008 Share Posted August 13, 2008 A ring mark on the piston doesn't mean that the head has been off. When the cambelt snaps there is no damage to the valves or piston. The pushrods take the impact and bend. Sometimes a rocker will snap as well. A busted timing belt doesn't require head removal. A 3-notch gasket is usually what's fitted at the factory, so use the same one when you put it all back together. Les. Quote Link to comment Share on other sites More sharing options...
rocky Posted August 14, 2008 Author Share Posted August 14, 2008 Many thanks for the help. Rocky Quote Link to comment Share on other sites More sharing options...
Thys Posted August 15, 2008 Share Posted August 15, 2008 Thanks, I will, the tolerances are so close i suppose it won't make much difference. With a bit of luck it will be mobile Friday morning. Rocky Rocky, I can't recall if it was mentioned, but please check the valve stand down measurements, before putting the head back, I trusted the engineering works, and they had the stan down values exactly on the minimum value, which cost me removing the head again, this time I had them cut the seats to a stand down value between minimum and maximum values. The Tdi head has a lot of "meat" in the valve seat. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted August 16, 2008 Share Posted August 16, 2008 If you skim the head or the block a lot you may get this happening - note that the injector tip has also hit the piston. The engine was actually running ok, but needed a rebore. Quote Link to comment Share on other sites More sharing options...
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