external wastegate?
#2
An external wastegate works the same as an internal wastegate, it bleeds of exhaust gasses to regulate turbo boost. On larger turbo's they are externally gated for a number of reasons, the main one being that on high horspower setups it would become a restriction if it was internally gated. look at the size of external wastegates and you will soon realise that you could not fit it inside a turbime housing while allowing it to work efficiently and at the same time not spoiling the flow withing the turbine housing itslef.
#3
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thanks for coming to my rescue again, i never really thought about it before but it all makes sense now, ill sort one and get it welded in with the manifold im making, im guessing you have a 60mm one for max flow, thanks again, phil.
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17 October 2015 06:51 PM