Question about 1999 Lexus LX470
The process is basically the same for any car or truck. Yours is an 8 cylinder engine, everything will have to be removed from the top of the engine and all wiring will have to be disconnected and moved to the side, You will have to remove the valve covers. If you have an overhead cam, in this car, you'll have to remove all the pulleys, water pump, AC unit and power steering unit from the front of the engine so you can then remove the timing cover. Remove the timing chain(s) and gear(s), you then can go after the head bolt removal.
If you do one head gasket, you may as well do the other one why you have the car tore down. If you have aluminum heads, you will most likely have to take the heads and have them milled (resurfaced) especially if you overheated the car when the head gasket blew.
For more detailed information, you really should buy yourself a repair manual so you can get torque specs on nuts and bolts and buy any specialty tools you may need to do the job.
Posted on Mar 25, 2015
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