NA to six-port turbo conversion
Are you interested in building a six-port RX-7 (FC3S)?
I converted (with considerable assistance from my friend and paid mechanic Chris Stewart) my naturally aspirated 13B rotary engine to a six-port T4 turbo managed by a MegaSquirt version 2.2 ECU and a wide-band oxygen sensor located 30" downstream from the custom installed T4 turbo in the 3" stainless steel down pipe. The header has a 50 mm waste gate and the bolt-on stainless steel exhaust finishes off with a set of 4.5 inch diameter canisters.
When the engine was rebuilt the designer swapped out the OEM (S4) center iron with an S5 center iron. I had to design and fabricate an aluminum plate to block off "extra" exhaust holes. With the installation of the turbo came considerable effort to relocate the battery to the interior storage box behind the passenger's seat as well as the removal of the air conditioning apparatus in order to create sufficient clearance for the custom intercooler's return tubing. The throttle body and intake air box was replaced with aluminum tubing and Blitz blow off valve; the six-port conversion also required simplifying the intake. I will soon have more details to divulge - once I learn from my mechanic how to best describe what he/we did.
