Skip the auto shop - Our mechanics make house calls

Q: Replacing Cylinder Head

asked by on

Hello I recently bought a nissan altima 2010 very cheap because it has a blown head gasket, I'm going end up replacing the old water pump, thermostat and a cylinder head with new ones , the problem i'm having trouble finding the cylinder head torque sequence and torque, i look everywhere and didn't find much on altima's the only thing i could find was one pdf and im not sure if it correct. this is the engine, page 64 is the cylinder head http://www.nicoclub.com/FSM/Altima/2010/EM.pdf

To me the pdf looks wrong because Torque seem to be too much to start on a high ft-lb torquing for the cylderhead unless i'm wrong?

Step a : 98.1 N·m (10 kg-m, 72 ft-lb) < looks too high for beginning torque Step b : Loosen to 0 N·m in the reverse order of tightening. <Im confuse what to do here Step c : 39.2 N·m (4.0 kg-m, 29 ft-lb) Step d : 75° clockw

My car has 11700 miles.
My car has an automatic transmission.

A: This is correct. The first torque step is t...

This is correct. The first torque step is to seat the head. Then loosen and tighten to 29 ftlb, then you have to tighten each bolt 75 degrees and then another 75 degrees. The bolts are torque to yield, which is why you should only use new ones and lightly oil the threads before putting them in. Make sure the bolt holes are free of oil and coolant, as tightening a bolt into a hold full of coolant can crack the block.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car won't start, but accessory lights are on.

You may need to replace the brake switch and sub-harness as per technical service bulletin NTB10-139. The brake lights are needed to activate the start function. Check the brake lights when you turn on ignition and push on the brakes....

Q: Timing cover and coolant leak questions

Hello and thank you for contacting Your Mechanic. Having a coolant leak will not damage a timing cover, however, having an engine overheat will cause a timing cover to warp or crack if the coolant was to spray on it....

Q: Service engine soon light on

Hi There, Both of these codes relate to your evaporative emissions control system. One relates to a leak that is detected and the other relates to the possibility of too much water vapor in your charcoal canister which is part...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.