RB20 diffrences

[Carl H]

just thought i would share a few diffrences ive noticed between old rb20's (rb20 on timing cover) and new ones (blank timing cover).ive got a 93 rb20det which has no rb20 on the timing cover and came with grey faced gauges.the turbo on the "new" rb20 is indeed ball bearing as the banjo bolt i pulled out of the block for the oil supply line had a restrictor built into it.wiring the 2 seems to be the same over all but the gauge cluster wiring is diffrent between the 2 and some of the instrumentation wiring seems to be diffrent as well.there are a few more diffrences between the 2 but i cant remember them, so these are the few that stuck out in my head.

[Yellow4g63]

I forget dose the ball bearing last longer than the non ball bearings at higher boost? or is it all the same? Boom from too much heat?

[Carl H]

both suck down a quick death when high boosting due to the crappy ceramic wheels.its not that the wheels blow up (which they can) but rather the ceramic coating comes off.

[Carl H]

engine temp coolant sensors also seem to be diffrent, 300zx one works on mine while the ka one works on the old rb20.