Sorry gents to digg this one up, but better than to start new;

I have read all above and know this - but still am not sure.

If I get a type rating for a single pilot airplan as SIC (F/O) on my JAA or EASA license, can I fly a private OPS N-reg jet with FAA validation as SIC in Europe e.g. in Spain only if Spanish issued license, or all across JAR land?

Also can I log SIC time on that N-reg jet even tho its single pilot certified or am I just "riding along" officially?
I know FAR 61.55 (SIC qualifications) say I have to be type-rated otherwise I can not act as a second in command. But if its only a single pilot airplane can I also log hours?

banned in less than a day! is that a record?

Its certainly novel, and there must have been more to it than one posting.....

Rolleys, there is no SIC type rating for a single pilot aeroplane under FAA. There is also no validation from the FAA on your EASA license. Basically to get any remuneration for operating a FAA registered aeroplane you need to have an FAA Comm. with the appropriate type rating. If you are not operating for remuneration, then it is private ops which then it is unlikely that you have an AOC which requires two pilots, and to operate it in JAR land as such would restrict you to Day VFR only, which means you would have to fly under the transition altitude all the time.
Basically the answer to your question is no, you cannot log the time at all, but you can ride along in the right seat for fun/ experience.