islanddozer Posted June 29, 2008 Share Posted June 29, 2008 Hi all...I'm new to this site but new to datsuns. I have 2 turbo blocks in front of me and they both have a corrosion problem on the second to the back right hand side (looking from front) head bolt thread. The cast iron has dissappeared and has left hole in the threads. I drilled it out and replaced it with a helicoil and jbwelded it. Anyone else with this problem with an 81 L28 turbo blockand what did you do ? Quote Link to comment Share on other sites More sharing options...
WizardBlack Posted March 31, 2009 Share Posted March 31, 2009 While I would never try to drill and tap (and JB weld) on a block, that specific hole was gunked with exhaust on my NA->turbo N42 block. What gives? Quote Link to comment Share on other sites More sharing options...
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