I've searched extensively on this top is but haven't been able to find the info I am looking for.
I have a 78 280 with an l28et from an 83zx, running a distributorless ignition and megasquirt controlling it with a crank pos. Sensor etc. P90a head and f54 block.
I took it apart and my wood wedge failed, allowing the tensioner to pop out so I had to rear down the front of the motor. I reset the cam/crank gears but messed up along the way, when #1 cylinder is at TDC (viewed through plug hole) the front cam lobes are never pointing up. I did try to start it before realizing, wouldn't start of course and turned over like it had no compression. I confirmed all cylinders have no compression with my tester.
I pulled the head and expected to see bent valves but the valves appear to be seated properly and the valves and pistons show no markings where they would have made contact.
My question is, with the dished pistons on this motor is it even possible for the valves to hit the pistons in this situation?
Would the cam being out of sync with the crank cause it to have no compression on all cylinders? Maybe this is because of collapsed lifters? I would think it would still build compression with collapsed lifters though.
I'm hoping I can just sync up the cam and crank correctly and put it back together.
Thanks for any guidance.