5sfe replacement swap, cranks but no ignition., st204 gettting a new 5sfe put in Options

[W8NKER]

Unable to get the car to crank over to a start after completing the swap
I'll try give some infomation as to what the situation is,

The donor engine was from a 1998 st204 in perfect working condition (130ks) put into a 1995 st204 i have purchased
with a completely seized motor from driving at extreme heat after burst radiator.
Both engine bays/ecu's etcs are almost identical not much i can tell is different from the manufacturing years.

After the swap was complete the starter just continuously cranks, I have ALMOST got the engine to turn over a few time previously
by spraying a lot of aerostart while giving it some slight throttle acceleration but to no avail.

since last night i have tried a few things;

-checking all fuses
-making sure all accessible plugs are not loose
-tried using the 1998 ecu (cranks the same, appears identical)
-putting axles back on and topping up tranny oil
-checked grounds
-topping up fuel

Everything appears to be installed as its suppose to be as i have checked for anything loose
multiple times and compared engine bays.

I've already run out of ideas as i am new to this and hoping others with more experience could
give me some advise how to troubleshoot and diagnose what the problems is.

Seems to be something very minor but i just cant think as to what the problem could be.

cheers in advance for any advice

This post has been edited by W8NKER: Apr 26, 2017 - 6:37 AM