greetings from Southern Maine
Hi, my name is Darryl. I am a long time sand drag racer that got bored playing with piston engines. I currently race a 135" chrome-moly sand rail powered by a 1983 12A Mazda rotary. My brother-in-law has a garage full of 1st generation RX-7's and related parts and he's the one I blame for introducing me to the rotary.
The current motor is a "stock" 12A that has a lot of bolt on mods and a totally custom "transmission if you want to call it that. I have a Racing-Beat intake that I heavily ported topped by a 650 cfm Holley 4-Barrel and a plate nitros system, currently hitting it with about 100 hp. I run the stock Mazda ignition, but added a pair of MSD coils as well as an MSD 6-AL on the lead ignition. We built the straight pipe header system starting with a Racing-Beat header flange. The motor is backed up by a Racing-Beat aluminum flywheel with a billet aluminum sno-mo-clutch by Micro-Belmont. To make that clutch work, I mounted the motor sideways in the chassis, including the carb. sideways on the intake. The motor idles at 3,800 rpm's, with the clutch engaging at 4,200 rpm's. Recent stats on performance include 60' times in the low 1.8's and on a 300' track a 4.701 at 72 mph.
The current motor is a "stock" 12A that has a lot of bolt on mods and a totally custom "transmission if you want to call it that. I have a Racing-Beat intake that I heavily ported topped by a 650 cfm Holley 4-Barrel and a plate nitros system, currently hitting it with about 100 hp. I run the stock Mazda ignition, but added a pair of MSD coils as well as an MSD 6-AL on the lead ignition. We built the straight pipe header system starting with a Racing-Beat header flange. The motor is backed up by a Racing-Beat aluminum flywheel with a billet aluminum sno-mo-clutch by Micro-Belmont. To make that clutch work, I mounted the motor sideways in the chassis, including the carb. sideways on the intake. The motor idles at 3,800 rpm's, with the clutch engaging at 4,200 rpm's. Recent stats on performance include 60' times in the low 1.8's and on a 300' track a 4.701 at 72 mph.




