OlderThanMe Posted December 5, 2006 Share Posted December 5, 2006 Well I was reading through Maximum boost for a second time and saw the Turbonetics wastegate that uses a throttle plate instead of a big valve (page 150). Obviously this could have big potential in high flow applications. If I needed to completely bypass a turbo (think sequential turbo setup) and don't want to spend a grand on a big enough wastegate to get the flow I needed this seems like it would be a good idea... I was also thinking that an exhaust brake from a big diesel truck could work for this application with a modified actuator/wastegate diaphragm to actuate it. It could be cheaper than a regular wastegatefor the flow I would need for the sequential turbo setup. I can scan the page for those that don't have the book. Quote Link to comment Share on other sites More sharing options...
thehelix112 Posted December 5, 2006 Share Posted December 5, 2006 Please do scan the page. My copy is in Australia. One thought on using diesel-application parts, it will burn. The temperature in a petrol-engine'd exhaust manifold will be significantly hotter than the temperature at god-knows-where in a diesel exhaust system. Dave Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted December 5, 2006 Author Share Posted December 5, 2006 Obviously turbonetics does not make this wastegate any more...or they never produced it. Maybe a cast iron exhaust cutout could be used... Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted December 5, 2006 Author Share Posted December 5, 2006 maybe it could be setup sort of like this but thicker steel or stainless: with a valve on it like this: Just delete the motor and put an actuator. The electric motor would not work very well being constantly used. It would probably wear out pretty quickly. The butterfly valve could be of use though. You would want to build a metal seal so that when the wastegate was closed it would butt against a metal shelf and prevent it from leaking. Quote Link to comment Share on other sites More sharing options...
olie05 Posted December 5, 2006 Share Posted December 5, 2006 the one in the last picture you posted has that metal "shelf" Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted December 6, 2006 Author Share Posted December 6, 2006 oh yeah...I didn't see that. Thanks! Quote Link to comment Share on other sites More sharing options...
aarang Posted December 6, 2006 Share Posted December 6, 2006 Aircraft use that style of wastegate. You can go to an aircraft parts shop and they should be able to help you. They are all pretty large, though. The ones we use are 2.25" wide. Also, be prepared for sticker shock. The last time I checked, an overhauled one was about $1300!!! Aaron Quote Link to comment Share on other sites More sharing options...
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