Presenting Zero Clearance K04s!
12-18-2003, 12:48 PM
#11
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details........
zero clearance turbos involves a coating on the compressor housing that reduces the clearacne in between the housing and wheel down to 0-.002/3in. this reduces heat, and increases the efficiency of the wheel as it is now using that previously unused air. (factory clearance is around .008-.011in.) upon start up of the turbo, the efficiency of the wheel is 100% and as the wheel wears its pattern into the housing, the efficiency drops to around 95%. factory efficiency of the K04 compressor wheel is about 70-72%.
12-18-2003, 12:50 PM
#13
AudiWorld Expert
I'll guess that it's a name that was created for reducing tolerances between the blades and housing?
I think I can convince myself that the blades are closer to the housing in these pics, but then again, it might just be the lighting/flash. And if this is it, I would imagine it's the same situation througout the turbo (turbine & compressor).
<img src="http://toasthost.com/achtuning/albums/Achtuning-Turbos/zeroclearanceK04.sized.jpg">
My K04:
<img src="http://ctny.audiworld.com/mark/s4/k04/dsc04684.jpg">
<img src="http://toasthost.com/achtuning/albums/Achtuning-Turbos/zeroclearanceK04.sized.jpg">
My K04:
<img src="http://ctny.audiworld.com/mark/s4/k04/dsc04684.jpg">
12-18-2003, 12:51 PM
#16
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KKK??? good boy...leak some more :-)
KKK03s just aren't super reliable in our cars but if they have been "Imolavirus infected" maybe they'll last longer and scream a little louder...in a good way of course.
Pete
Pete
