-Paul Carey wrote:

Hi Ben
I run a 20B drag car, and can confirm exactly what Bill says. My

first

attempt with open headers (2 1/2" pipe about 3 feet long) quickly

got be

banned from the track, as it was louder than the Top Fuel Dragster

there

that day! I tried Gonzo mufflers, which took the edge off, but

choked

the

engine. I now have three huge flow through mufflers, one for each

housing,

and it is better, but still loud.
PC

Paul Carey LAME, MC

Paul, Is this a bodied car, or a rail?
Are you running Nitro?  What %?
Supercharged?
Archie

Paul Carey wrote:

Hi Archie
It's a series 1 RX-7 sedan. 20B with an 8/71 on top running alcohol
(mechanically injected).
I would like to try nitro eventually, as there is a chart for fuel flow
requirements starting with a 10% mix with alcohol, going up in concentration
in 10% increments. Nitro requires HUGE flow rates, and my 11 gallon per
minute mechanical fuel pump may only handle small concentrations. Nitro is
not legal in any class over here except V8 Top Fuel or specially approved
exhibition runs, and some rotary drag racers in Oz were caught by the
officials using nitro and quickly disqualified. Maybe on a test day :-)
I am going to fit my power turbine first, then play with afterburning with
alcohol just prior to entry into the PT.
Regards PC

Paul Carey's Blown Alcohol Drag Car
Mazda 3 Rotor RX-7
www.blown3rotor.com
Ph: (08) 9371 5205
Fax: (08) 9371 9644
Mob: 0418 959 892

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