Experimental
Quad-Throttle setup on 13B Bridgeport, using 36mm units from a BMW motorcycle,
with custom stainless steel upper inlet section. Lower section is ex-13B
Turbo Series 4.
...from the other side. system used standard Series 2 distributor and a
Haltech F9 fuel management system. Basically it looks very nice but proved
unsuccessful in practice. A loss of around 40KW to the wheels over the
conventional 2x50mm IDA Weber style system.
Tacho Mods to suit 3-Rotor
.
.
When using the OEM tacho from the Series
2 RX-7 (1982) all that was needed to get the tacho to read correctly with
the 3-rotor engine was to replace the white 10K-Ohm Variable Resistor on
the tacho's circuit board , with one of a 20K-Ohm resistance. When the
trim-pot is adjusted the tacho sensitivity varies and this let me set the
tacho to read double what in normally would. This is due to the 3-rotor
not running a waste-spark ignition. It only sends out half the pulses to
the tacho that a normal 2-rotor would, so somehow I had to double the sensitivity.
Mission Accomplished !