There are 2 types of CT12's.
CT12 comes off a 1G-GTE 2.0 litre twin turbo six, and they have steel turbine wheels.
CT12a comes from a 1JZ-GTE 2.5 litre twin turbo six, and they have ceramic turbines and spool up much quicker at lower revs, but the ceramic wheels are known to fall off after prolonged overboosting (say 15psi). The replacement wheel is generally the steel wheel off the 1G-GTE CT12.
Michael
Fri, 11 October 2002 06:11
