sharpy-vr6 10 Posted May 20, 2013 As some of you may have seen in the for sale section I was looking at selling my supercharger when I realised that it may be something a little special. it appears I may have a 2 speed gearbox attached to my c30-94 rotrex charger, however im struggling with my research and wondering if anybody can help. here is what I have found. Firstly this is what a standard rotrex c30-94 supercharger looks like. [ATTACH=CONFIG]74291[/ATTACH] And this is how my model looks. [ATTACH=CONFIG]74294[/ATTACH] As you can see my model is exactly the same up to a point and then there is an extra casing attached to the side. when I purchased this a fair few months ago it was advertised on ebay as a c30-94 rotrex charger. in the description it said about 2 speed gearboxing however I just presumed this was standard for rotrex. so I did a little Google search into the matter and found a company called Antonov did make a 2 speed tranny box for rotrex superchargers and they unveiled their product attached to a ford mustang. the idea in the gearbox was to allow for higher boost and more torque at low rpm, and after the engine had hit a higher rpm the gearbox would change bringing the boost back inline with standard figures. however there isn't a large amount of detailed information online that I can find other then a few videos and a couple of blog/ forum posts. I found these pictures of the inner workings of the box and also a build put into a lexus engine. [ATTACH=CONFIG]74292[/ATTACH] [ATTACH=CONFIG]74293[/ATTACH] As you can see the supercharger looks identical to mine however the only markings I can find on my unit are these...... [ATTACH=CONFIG]74295[/ATTACH] I doubt these marking are useful and I am not brave enough to remove the gearbox casing to check for more signs just wondering if anyone can spread some light on the matter. Thanks for listening Quote Share this post Link to post Share on other sites
coullstar 0 Posted May 21, 2013 I would put it on ebay with all that info to see what interest you get. Quote Share this post Link to post Share on other sites
Wullie 1 Posted May 21, 2013 Maybe ask Rotrex themselves? http://www.rotrex.com They would probably be in the best position to give an answer. Quote Share this post Link to post Share on other sites
