Here you go ... read this thread, and at the bottom I post a link to the Nissan factory service manual. You should be able to find all the tech info you need there.
http://www.nissanforums.com/u13-1993...ml#post1218824
UPATE -- I tried the link, and it seems it's now locked down. It use to go directly to the factory manual. Apparnently Nissian has nixed that link.
Looks like the AutoZone manual is your best bet at this point.