Hi JessT. Thanks for your help. I will try out your solutions since the reason you gave for the problem makes much more sense than a cracked block.
I've seen that red Orion on the net before. It's nice and has a nice original bodykit, much better than the one provided by McRallying.
If you can give your email address I will send you pics of my Orion, or else find me on IRC Undernet server on #malta with username RST_226. My Orion was the first one to be modified in my country, it's the one in the best condition still running original factory spray and after it featured in a local magazine it is now being the inspiration to other Orions, not as fast of course.
Again thanks for your help Jesse!