<>78 280Z Timing Chain Problems . <>Z DOC. <>HELP!. <>I recently replaced the head gasket on my '76 280 Z. Now I need to put the timing chain and sprocket back on the camshaft. I wedged the chain so the tensioner wouldn't reset, like the Chiltons manual says to. I now have two problems: 1. After the valve job at the machine shop, the camshaft is abviously in a different position, and I don't know how to line the sprocket and chain up so the timing is right?????? 2. Even with the chain wedged, I think it may have reset, so my question, How far does the timing chain have to slacken so the tensioner resets, and how can I tell if mine has reset???????. <>Thank you for your help. Jason, proud '76 280 Z owner . <>Doc replies:. <>Hi Jason,. <>Doc here, have you installed the head yet? Is it torqued? The dowel pin should be up at the twelve o'clock position and the camshaft sprocket on the (2) or middle hole with the crankshaft at zero. There should be a picture in your service manual if you have a good one for the finer points of the camshaft timing.. <>As far as the resetting...? There is no resetting of the tensioner if it falls out you will need to remove the oil pump and the timing cover to get all the parts back in order as a rule. I have been very successful with years of surgery to be able to return the tensioners back into their original position without removing the cover, but that is not an over the Net solution for you.. <>Are you a ZONC Member? Join ZONC Z OWNERS OF NORTHERN CALIFORNIA! . <>My Shop is in MAriposa, just outside Yosemite. Call for an appointment: Doc's Auto Clinic 209-742-6150 afternoons PST.. <>ZDOC OUT. <>.