I will be rebuilding my 550cc fuel injectors, but I need to clean them first. I've read that soaking them in carb cleaner overnight works.

Any recommendations on what I should soak them in? Brand names are fine, or something besides carb cleaner.

You need to send them out to be professionally cleaned. They'll use ultrasonics to break up anything stuck inside. http://www.witchhunter.com/

or send them to RC Engineering http://www.rceng.com/

They give a discount if you mention RX7 Club.com.

Osidetiger cleaned all for of my injectors for $64.00...

Adding another one to the list. Mark, the DW service tech, is a member of RX7Club and fellow FC owner.

http://www.deatschwerks.com/fuel-injector-services/

you can't disassemble the stock injectors by the way.

ya..you need a BIG Freakin Hammer to get the Corrosion out of the injectors!!!!
(please I am KIDDING!)
www.injector-rehab.com , www.kgparts.com (Keith Gibbons both companies) Fast turn around from New Jersey..about 5 days US to Canada.