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The CAM NUT is stong enough to rotate the engine with....
The REASON not to use it is that the whole system is designed with respect to keeping the timing chain tight between certain points in the rotation... the slack being addressed on the passenger side of the engine by a combo spring,ratchet and oil pressure.
This is why the FSM specifies that when ' rolling in' a new chain pressure is to be kept on the combined chains...
If you use the CAM NUT then you are PUSHING A CHAIN... thus not keeping the designed tension on the side of the engine meant to keep the chain in contact with the sprocket of the timing pump and things like chain rails.
We have had many reports from people who thought they ' just replaced' the chain... and found the timing pump a tooth off afterwards...
But some people do not believe the FSM.... after all it was only written by the people who built the car...
TCane and I spent an hour taking a PS nut off a car he bought ....with oxy acet and many heatings and lots of force..... that is when we found out it was tapered...
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