Quote Originally Posted by billyj View Post
their all guzzlers, my old tb42e used to average 20l per 100 around town, best ever fwy run was 13l per 100, once i turboed it it still averaged 20l per 100 but went a shit load faster.
20l per 100 around town is pretty good. The best RB30 can clock is 6km/L as oppose 5km/L of TB42, but your figures above says 100km/13L, which translates to pretty much 6km/L. I see no difference comparing to RB30.
To me, it looks like 3L RB30 engine isn't producing any economical advantage over a TB42 when the TB42 is fine tuned and well maintained.