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I just compleetly re-built my 1989 Nissan Sentra 1.6 litre GA16i engine. It only took about 1 hour to compleetly take the head off. But in order to put it back on there is a lot more involved. The exhaust pipe from the Exhaust manifold to the catalatic converter must be removed along with the lower cross member, to take the oil pan off. Next you need to remove the front engine mount, and all the serpentine belts, and the water pump. Next you take off the timing chain cover. It took me about an hour and a half to do all this. (I've done it three times before on other sentras) Then all the re-assembly can start, which takes another 1 1/2 to 2 1/2 hours. Makes a grand total for the cylander head gaskit replacement of 4 to 5 1/2 hours. Then there is the question of whether the head needs work. If the valves don't seal well or the head is warped, Machine work can take another 2 or more hours.

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โˆ™ 2011-09-13 02:02:06
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Q: How many hours should it take a shop to pull the head and replace the gasket on a 1989 Nissan Sentra?
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