Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** thank you for your question.
To put the crank at TDC you want to have the Key way at 11 oclock. Then Bank 1 Cam should be at around 11 oclock as well, and Bank 2 at around 1 to 2 oclock. If you line up all the colored links on the chain to the timing marks on the sprockets, that is how you know your timing is correct.
This is a video how the timing chains are removed and installed and how to set the timing. Since you already have the front timing cover off, just fast forward to the part you need.
That link shows where all the timing marks should be located so the colored links on the chain could line up to them.
If you have any more questions on this, please feel free to ask.
If not, and you're satisfied with my help, please Rate me. That is how I get credit for my work.
I hope I have provided you with Excellent Service.
What is causing it to bind is the pistons are hitting the valves. So what you need to do to work it's way back around to 12 or 11 oclock is to turn the cams to allow the bottom end to turn. Once the bottom end is in position, then you can try to turn the cams back.
One you turn the bottom end and feel the resistance, back it up a little, turn the bank 1 cam leaving the chain hooked up of course for the Bank 1 intake and exhaust cam to turn both at the same time. Turn it 1/2 a turn. Same with Bank 2
You don't have the Cam Chains off do you? Only the Primary chain right?
Then you need to start with getting the upper cam chains on if you can, other wise, you would need to turn each cam individually to allow the crank into the proper position.
Yes, That is how you would get the crank into position. If you feel resistance, you need to turn a cam so it can move the valves that the piston is hitting so you can put the crank in the correct position.
I works better if you have the upper chains on. Other wise, you would need to turn each cam. If you have the valve covers off the cams have a spot to put a wrench so you can manually turn them.
You got it
If not, and you're satisfied with my help, please Rate me. That is how I get credit for my work. I hope I have provided you with Excellent Service.
You want to have them close to the tdc mark and just turn them 1/2 a rotation or so to allow the crank to it's TDC point, then turn the cams back to tdc
If you can't turn the cams to allow the bottom end to turn to TDC, then all 4 cams will need to be unbolted so the tension can be taken off the valves so they can close so you can turn the engine.
If you can't get the cam's to allow the crank to the proper position, then you have to unbolt the cams to allow the valves to close so the crank can be turned to TDC. Once the crank is on TDC, then bolt down the cam's and set them at TDC as well
The upper cams would need to be fully unbolted to allow the valves to close to get the bottom end of the engine in time.
If the cams are bolted down, There is pressure on some of the valves to push them open.
Is this getting a little more difficult for you? The Cam Sprockets will need to be removed and top front cam caps. There is re-torquing required for the cam caps.