alexideways Posted December 19, 2006 Share Posted December 19, 2006 Hi, question, I went to a tractor pull the other day and asked a driver how come he has fire coming out of his 32 exhaust tubes even under full throttle. His answer was: Cause, we dump raw fuel in the exhaust right before the turbine to have them fully spooled right away. My first tought was OMG, those turbos mus'nt last too long but, then I remembered something I saw on junkyard wars a few years ago where they had built a jet engine out of a turbo. My questions here are: 1- has anybody here ever seen that on a car? 2- could the turbo stand up to this kind of heat?????????? Thanks. Quote Link to comment Share on other sites More sharing options...
hotimport Posted December 19, 2006 Share Posted December 19, 2006 Depending on what you want out of the car i guess. If its a pure drag car, then it should with stand that kind of heat if you run alchol injection. Even if you do run something like that exposive thru the turbos, they might need rebuildong after a few pulls like that. Quote Link to comment Share on other sites More sharing options...
alexideways Posted December 19, 2006 Author Share Posted December 19, 2006 And what about diverting the BOV into the exhaust right in front of the turbine to keep it spooled??????? I think that's what they used to do in Gr.B ralliing. But, then I guess the ECU would go nuts :willy_nilcause, it suddenly sees full lean conditions:confused: Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted December 19, 2006 Share Posted December 19, 2006 That would be an anti-lag or mis-fire system.. basically the timing is retarted to about -40 degrees and the mixture is ignited.. the combustion expands out of the cylinders and out the exhuast valve which is WIDE open at -40 degrees. This is the FIRE and loud BANG BANG accompanied with the setup. Rally cars (WRC) use this setup to run boost ALL the time.. on or off the throttle... this video is a great demonstration Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted December 19, 2006 Share Posted December 19, 2006 one more vid wouldnt hurt.... Subaru Anti Lag competition Quote Link to comment Share on other sites More sharing options...
alexideways Posted December 19, 2006 Author Share Posted December 19, 2006 Thanks Prox.. -What are the effects of this on the turbine on the long therm? ________________________________________________________________ I'm pretty sure I'v seen somewhere that the Gr.B Audi used the compressed air from the compressor to drive the turbine when the pilot lifts the throttle. _______________________________________________________________ But, the guy I was refering to in my original poste really had an injector in his exhaust manifold right before the turbine, he said, when it shoots alchool in there with the heat of the exhaust, it just explodes and spool the turbine very quickly. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted December 19, 2006 Share Posted December 19, 2006 well thats another way of doing it.. HOT exhuast manifold.. fuel ignites.. as for the Group B Audi Quattro S1 .. there is a similar setup in GiGi Galli's Mitsubishi Evo WRC car that vents the compressed air into the exhuast manifold.. which is used for the antilag... you need 1)fuel 2)air for an explosion.. Mitsubishi decided to use the compressed air for this source. Quote Link to comment Share on other sites More sharing options...
alexideways Posted December 19, 2006 Author Share Posted December 19, 2006 Wow, that's alot of piping and heat shielding, would'nt want to be the guy stuck with diagnosing a problem in that system:willy_nil, thenagain, if you designed it or helped in the process you must know what you're doing. Quote Link to comment Share on other sites More sharing options...
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