Question about Toyota 4Runner

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1994 4runner, six cyl. putting rebuilt heads on, toyota head gaskets, new head bolts "tvs 10.9". Torqued bolts in pattern to 33 foot pounds. another 1/4 turn in the pattern. and into my next and final 1/4 turn (required by toyota book), 3 different bolts acted like they stripped. They still have torque to them(more than 33 foot pounds I checked) but it seems that they "gave way" going into the final turn. I can't imagine the bolts stripping, but they aren't from toyota. I did oil the bolts prior. Would the gasket be giving? What do I do? Do I eat the gasket, pull off the head and check the bolts? Can I pull a bolt out, check it and torque it back to 33pounds and then 180? Do I check all bolts by setting my torque wrench to "40 plus pounds" to make sure that I have equal torque all around? Ideas?

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  • willseyd Nov 13, 2009

    I had chased each bolt hole with WD-40 and blasted them out with air prior to install. I was on the final 1/4 turn when bolts acted as they did. Can I pull each bolt (one at a time) in order to check them then torque them down again without weakening the seal on the gasket?

  • Anonymous Mar 31, 2014

    how tight do the cylinder head bolts get tightened

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  • Toyota Master
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REMOVE 3 BOLTS MAKE SURE YOU HAVE THE RIGHT THREADS.IF BOLTS LOOK OKAY.YOUR BOLTS HOLES HAS DEBRIS OR OIL AND ANTIFREEZE IN THEM.OR YOUR BOLT HOLES IS STRIPPED.YOU HAVE TO REMOVE HEAD TO FIX THE THREAD PROBLEM.IF YOU HAVE NOT MADE THE FINAL TORQUE TO CRUSH AND SEAL HEAD GASKET THE. HEAD GASKET PROBABLY ALRIGHT.YOU HAVE TO LOOSEN HEAD BOLTS IN SEQUENCE BACK OFF A LITTLE AT EACH BOLTS.IF HEAD GASKET LOOK DAMAGE AT BOLT HOLES REPLACE HEAD GASKET.

Posted on Nov 13, 2009

Testimonial: "Information given was knowledgeable on the subject. "

  • Jonah Oneal Nov 13, 2009

    I MEANT TO TELL YOU ANY TIME BEFORE YOU PUT CYLINDER HEADS BACK ON.MAKE SURE CYLINDER BLOCK HOLES IS CLEANED AND RETAPPED SO NEW BOLTS WILL TIGHTEN. WHEN YOU PUT THE HEADS BACK ON.

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