Timing Chain Tensioners Replacement

[Prochase981]

Thanks for the input guys. I appreciate it.

[Hartman]

I would think that you would if you want to be 100% safe. Once you complete the upgrade on bank1 you need to unlock and turn the engine 360 degrees clockwise and lock TDC on bank two. The idea of TDC is to take all the tension out of the bank in question.

I'm sure there are people who would say you don't and I would guess that it is totally possible to do it without locking. it is really based on your personal risk level. Looking at the cam shaft notches can tell you if you are out of time.

On the exhaust cams you will see the notch is not centered. One edge of the notch is on the center line and the other edge is offset. When the bank you are working on is in TDC that notch will create a small "C" and bigger "C". The bigger "C" needs to be on the side closest to the crank and the smaller "C" will be on the valve cover side. This lets you know which bank is TDC.

[Hartman]

Also don't forget to take the new tensioner and put it in a cup of fresh engine oil and compress it a few times to prime it. this is important to ensure when you start the car for the first time it is able to apply tension right away. If not it will need a bit to fill with oil allowing the chain to smack around.

You can confirm this by pulling an old one and try to compress it and compare to the new one before priming and then after.

Im sure you are aware but all three tensions are different and have rings on them so you can ID them. The engine will have matching ring marks on the engine.