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As mentioned premature HG failure isn't that common anymore, except for the installs that were done wrong. i.e., re-used headbolts, block and heads weren't flat, didn't torque correctly, etc. I have gone 8yrs, 6yrs, 2yrs and counting on oem HG's w/o failure, the first set was replaced due to hydro-locking the engine after a failed river xing <img src="/forums/images/graemlins/smile.gif" alt="" />, and the last two have been for burnt valves. If you are planning on doing the work yourself, you can rebuild the heads, gaskets, misc. parts, along w/headers/exhaust for about $2k.


What is the deal with the burnt valves on the 3.0L? I have not heard that much about it, but that is exactly why I had to do mine. I bought it from the original owner with 2 burnt valves. She had the receipts to show that the dealer had done the HG recall only 30K before, but still two burnt valves. I'm thinking maybe they were not adjusted correctly. I am going to check my plugs to see if the mixture looks right also since that could be a cause. I do not want to do the HG again.

1997 T100 extracab, 3.4L, 5-speed, 169K, 4x4. Love the truck, never buy anything but toyota, I tried it once, most miserable six months of my life.