| 1Bear |
Dec 26, 2012 09:13 PM |
Without looking at the Facebook page, it sort of looks like a Mike Janis 14-71 Hi-Helix unit, especially the hat. The 14-71’s and so on are no punk by any stretch of the imagination, but they are also not nearly the largest roots style supercharger out there by any means, especially with the advent of the larger 16 & 18-71’s.
A DMPE 18-71 High Helix is probably one of the baddest roots blower made. It produces boost numbers in the high 40 psi area on engines like a BAE 526 Hemi. It is claimed to be the ultimate choice for an out-of-the-box supercharger that has not been modified for Outlaw Racing where a screw blower is not allowed, although some of the other classes may dictate a unit no larger than a 14-71. For the Extreme Outlaw Pro Mod class the rules did state last year that intercoolers, variable multi-speed supercharger devices prohibited. The top opening may not exceed 12 inches in length or 5 inches in width. The entire inlet opening must be on/in the upper surface only. Any inlet/outlet cavity in front of the rotors is restricted to a maximum of 3.000 inches measuring from the face of the bearing plate to the front of the cavity. In a Pro Mod capable of a 5 second pass the typical horsepower is between 2500 and 3500, with a car weight of 2700 lbs (supercharged) or 2375 lbs (nitrous) with 527 cubic inches and supercharged (blown) and methanol fueled, or have a larger 820 cubic inch engine fueled by nitrous oxide and gasoline. The rules change so much and there are so many classes I can’t keep up with them all, although I’m sure someone can rattle them off like no one’s business.
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