head cover gasket PROBLEMS

3 replies to this topic
  • tdd6405

Posted April 23, 2004 - 03:47 PM


i just ran my 02 426 today for the first time. (its 440, high compression, port and polish etc. i had a basically stock 426 before and i had no problem) when i get on it hard, 2nd or 3rd gear or higher and hold it pinned the head cover gasket blows. the 2 half circles pop right out.

this ever happen to anyone? i dont know if its becasue of the higher compression and all or if the gasket just needs replaced. i doubt its cuz of the compression cuz i dont think there is much pressure ontop of the head. im going to get a gasket anyways but just wanderin if anyones seen it before.

  • sirthumpalot

Posted April 23, 2004 - 03:56 PM


Make sure the crank case breather that attaches to the valve cover is not pinched!

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  • YZDAD1

Posted April 23, 2004 - 03:59 PM


It sounds like you have excessive blow-by (crankcase pressure) that cannot get out of the engine, check for a blocked breather hose, or the new rings are not sealing well (they may after awhile)

  • tdd6405

Posted April 24, 2004 - 04:50 PM


i was thinkin about it last night and i thought the same thing. turned out it was kinked. so i re-routed it and it works great now. thanks for replying guys

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