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Got my k-jet updated. 140-160 1974

posted by  someone claiming to be bben on  Sat Oct 16 10:29 CST 2004 [RELATED]

A big turbo on a small 4-cyl. means very little boost UNTIL you get to high rpm's. It is the turbine which spins the compressor wheel. Big turbos have big, heavy turbines which won't spin without a lot of exhaust flow (ie. rpm), which means the compressor isn't spinning enough to create boost until said high rpm's.

Small turbos have much less lag,and therefore, are more 'pleasant' to drive on the street. At higher rpm's those small turbos do become a restriction...






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