3sgte died..., Cut out on me...?? Options

[Celica_At_GT]

Well here is a little history first (since haven't posted on this board much - use to a lot on cnet (celica.net) back in the day though....

I had done a 3sgte engine swap and had a buddy do all the wiring for me (about 3 years ago). After finishing the mechanical stuff and putting th engine in, I found out the wiring was hosed. I took it to a shop to get it looked at and they put a microtech standalone ecu in it.

I finally got it running and it ran great for about 2 hours of usage and then just died on me. I haven't been able to restart it since then (but haven't been working on it too much)...

The pistons all seem to have really low compression (all around 90-100 psi). I am wondering if
1. what the compression should be.
2. if it is low, why is it low on all of the cylinders - does this mean the head gasket may have been put on wrong?? What could this imply?

Thanks for any assistance.
Ben