flatback90 Posted November 3, 2009 Share Posted November 3, 2009 might be fun? anyone know anything about it? http://www.raschmotoren.com.br/defender.htm Quote Link to comment Share on other sites More sharing options...
Aragorn Posted November 3, 2009 Share Posted November 3, 2009 My first concern would be that the turbine housing on the small turbo is going to act as a huge restriction to the exahust gas flow, so i'd be surprised if you get much benefit from the large turbo at all. Maybe it works alright though. Quote Link to comment Share on other sites More sharing options...
Gremlin Posted November 4, 2009 Share Posted November 4, 2009 Interesting, just like the tractor pullers do it.................... i wonder what sort of psi they are seeing, and how the 300 will holdup. Usually the tractor boys run water/alc injection between stages, not to melt anything i guess. G Quote Link to comment Share on other sites More sharing options...
Lara Posted November 6, 2009 Share Posted November 6, 2009 I think it will probably work fine! I would tend to agree with Arragon's comment about the small turbine housing but as this will have it's waste gate open as soon as big boost is there, it may not effect it too much! I do think that the workmanship looks good and the design is well done, including the intercooler shape etc so let's give the builder the benefit of the doubt as he looks like he knows what he / she is doing! and the pics do not show it very clearly. Would like to see the result! could be fun! although probably not off road Lara Edit, Judging from the rest of the stuff on their site, they seem to know what they are doing and have quite a few 2 stage kits for different engines available. Perhaps we should watch with interest! Quote Link to comment Share on other sites More sharing options...
kkk2 Posted November 6, 2009 Share Posted November 6, 2009 I have one of these mwm 4.2 sprint engines in my 110 Quote Link to comment Share on other sites More sharing options...
Aragorn Posted November 6, 2009 Share Posted November 6, 2009 Good point on the wastegate, i guess you could always machine the wastegate out (or even run an external gate) which wont affect the spool but will allow enough exhaust gas to bypass the small blower to make it all work pretty effectively. Quote Link to comment Share on other sites More sharing options...
flatback90 Posted November 6, 2009 Author Share Posted November 6, 2009 I have one of these mwm 4.2 sprint engines in my 110 and dont we all know it!!!!! seriously tho'thanks for the link kev!! so when is the twin turbo coming then?? Quote Link to comment Share on other sites More sharing options...
Daan Posted November 6, 2009 Share Posted November 6, 2009 I think it could work well, quite a few major manufacturers are going for 2 stage turbocharging. It certainly would work better than replacing the turbo for a bigger one. Daan Quote Link to comment Share on other sites More sharing options...
nicksmelly Posted November 7, 2009 Share Posted November 7, 2009 BMW 335D and the new X5 3 litre diesel are twin turbo. The turbos are the same size as fitted to 2.0 litre freelanders TD4's, but two of them. Quote Link to comment Share on other sites More sharing options...
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