"New" motor has low compression

[Joe'sTalon]

This is the story:

I had bought a motor some months ago that was claimed to be rebuilt 'new' and many other various claims that turned out to be false.

First off, the motor came with a damaged timing belt and damaged oil cooler fittings. Not a BIG issue, as shipping across country may have caused this. Although, my shop ended up having a lot of trouble getting the right fittings for the oil cooler setup as well as getting the oil gauge/light to work properly with the motor's custom configuration.

Some other things were noticed about this particular motor: its a used hyundai 2.0 block with a hyundai 1.8 head. Keep in mind this is a non-turbo '4G63' so it doesn't have any 'deleted' oil squirters. The builder claims there are new 1g rods and pistons put in. Let's assume that the timing belt components aren't Mitsubishi parts, either.

Shortly after the engine was put in the car and running, it was producing a noticeable amount of smoke. The smoke was traced to a leaky head gasket. (The head was taken off, and low and behold, there were used pistons in there along with obvious signs of uneven crosshatching on the walls too.) The head was taken to a machine shop and found that it wasn't straight at all, and was then surfaced accordingly to fit a metal gasket. (the original metal gasket was a cheap one)

After the head was put back on, the motor gave low compression. The head was then taken off again and the culprit now was the valves. These findings all indicate that the head was indeed a used head. The head is currently undergoing a valve job and will be put back on the motor soon.

My question is this: will the rings be able to hold now that the head is straight/sealed? And the compression? Thoughts and suggestions welcomed.
Edit: Ps. this motor was purchased from Karking for any clarification purposes.

 

[redyute1]

Yeah the rings should hold up just fine

 

[Team Addiction]

If your convinced the top end is shit why would you even presume the bottom end is any better off??

Seems to me your in denial

 

[Joe'sTalon]

You're probably right, given its used rods and pistons put into this used hyundai block, they probably did just as careless a job in putting it together as the head was. I just hope the car will be drivable without any smoke. WTF

Its in the process of being put back on; I will post the results.

 

[Team Addiction]

Good luck man Ive been through similar issues myself. I was in denial too should have just done the whole thing while I had it out but tried to stay on the cheaper side and it didnt pan out for me

Hope you have better luck!