Quote:
Originally Posted by michakaveli
Can someone elaborate on the this "clipping" technique that has been portrayed. Looks like this clipping reduces the actual surface area of the blade that bring air into the turbo.... yes?
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Per the
Garrett website.
Quote:
Clipped Turbine Wheel
When an angle is machined on the turbine wheel exducer (outlet side), the wheel is said to be "clipped". Clipping causes a minor increase in the wheel's flow capability; however, it dramatically lowers the turbo efficiency. This reduction in efficiency causes the turbo to come up on boost at a later engine speed (ex. increased turbo lag). High performance applications should never use a clipped turbine wheel. All Garrett GT turbos use modern unclipped turbine wheels.
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In other words, the exhaust is flows with less restriction. Mainly for top end power with loss of low end power because of a later spool.
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