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Post by bigdave on Jun 25, 2011 15:57:51 GMT -5
I was wondering, I know that superchargers are legal in ANRA, but are they restricted to roots style only? Or are centrifugal style blowers legal too?
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Post by glofria on Jun 25, 2011 18:19:33 GMT -5
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Post by bigdave on Jun 26, 2011 1:16:24 GMT -5
In that rulebook I see where there are restrictions in some classes but it doesn't appear the restrictions are in all classes, just that they must be front driven. I was just thinking of a future D/gas supercharged car and there's no way a BBC and a supercharger will clear under a 4" cowl hood in it unless it is a non-roots style.
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Post by glofria on Jun 28, 2011 14:42:11 GMT -5
From our past experience, you won't get a blower with a hat under a 6" cowl either.
Being that the below explanation only discribes a Roots-type blower, one can easily assume that it is the only type excepted. The only variation that I've seen is using carbs instead of injection.
1:10 SUPERCHARGER
Nostalgia Top Fuel, Nostalgia Funny Car, A/Fuel, and AA/GS: Refer to individual Class Requirements for supercharged specifications.
Roots-type: Maximum size: 14-71, 22 1/4-inch case length, 11 1/4-inch case width, 19-inch rotor length; maximum rotor diameter: 5.840 inches including fixed stripping. Rotors must be driven from the front; both external drive and internal gearing. The case must be one piece with removable front and rear bearing end plates; rotor must be contained within one-piece case. Rotor helix angle may not exceed that of a standard
71-series GM-type rotor (4 degrees per inch). Maximum overdrive see Class Requirements. Aluminum studs (supercharger to manifold) mandatory in Advanced E.T., A/Fuel, Nostalgia Funny Car, and Nostalgia Top Fuel. See Class Requirements for
manifold burst panel and restraint specifications.
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Post by Jeff Smith on Jun 30, 2011 19:15:09 GMT -5
To be perfectly honest.. that sounds like the restrictions only pertain to the listed classes. As a matter of fact I know of a few racers who run high helix blowers in NE-1 and A Gas. I don't understand why somebody would want to spend $1000 on a -15 or -20 fire suit and put $750 to $1000 in a 20lb fire system plus a $250 blower restraint in a car to run 10.50s though
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Post by Eric on Jun 30, 2011 20:52:52 GMT -5
Jeff I was thinking the same thing...Blown big block Chevy seems like over kill to run D Gas...Lots of single 4 barrel small blocks running the number in D Gas.
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