Your new here so I will not do the typical bashing, You way want to delete this and post it in "The lounge" or even Nissan/Infiniti Tech

Also a few people you could talk to who could possibly know something about your problem are Empire, or mewantkouki Both are reputable sources for information if they know anything about those motors.

Also a simple google search never hurt.

I came across this but did not get interested enough to read on Ca18det FAQ - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum