Zero Clearance Turbos
#1
Nordschleife Master
Thread Starter
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A number of people have been inquiring about ZC technology from Ultimate Motorwerks. What is it? What does it do? Although I run a large single turbo the results are comparable with what you'll find with K16 & k24s. Over the winter Kevin completed the ZC on my large turbo and the results have been very positive. The spool RPM has been reduced by about 800rpm and as a result torque is up 30-50ft/lb at the rear wheels in some places. There is noticable boost at 2000rpm. This is with a large single turbo that has inherit lag compared to a twin setup. Anyway, here is a picture.
![](http://forums.rennlist.com/upload/p1010071.jpg)