This winter I put a vvt head on my 96 miata and changed the clutch/flywheel. I followed the megasticky for vvt engine swaps and found it very helpful, but now I'm having an issue on startup. Initially when I tried to start it the timing was off and the car would not start. I triple checked it on the engine stand, but did not rotate the motor over twice before adding tension. I think that is where I made my mistake. Now it is retimed and the car started on the first try. The problem is that there is a very loud metallic noise.
My thermostat housing cover cracked and I am waiting for a new one, so I figured I would do some more research until I can work on the car again. The noise appeared to be coming from one of the cam gears. It didn't get louder when I opened the oil fill on the valve cover. I didn't get under the car with it running yet to listen there(possibly clutch flywheel install related). I'm guessing I damaged a valve trying to start it with the timing off(non interference motor though?) or the vvt actuator is messed up. The VVT actuator has oil going to it. I ran a 4an line from an oil filter sandwich to the threaded port right below the factory inlet. I took the line off to confirm oil is in the line. Also I thought no control of the vvt may cause this, but found some examples of people running it that way with no issues.
Not sure if specs will help, but here they are
used vvt head purchased on here
stock 96 cam and crank sensors until i get it running right then install my MS3 and nb sensors
96 coil pack mounted on modified valve cover
oil line from oil filter sandwich for vvt supply
Anyways, heres a video. Any feedback would be greatly appreciated.
miata vvt head
by matt taylor
, on Flickr