How to Make your LS-powered RX-7 SMOG legal
By Zack Klapman
My favorite website, MotoIQ, has been detailing their LS-powered RX-7 build for many moons, and they’re almost done. The engine is in, it runs, it drives. “What’s left? Let’s go drifting!!” Slow down, Brian Spilner. See, they want to be able to drive this car on the street, legally. That means registration, which means smog. We’ve talked a little about these laws on the podcast, but our advice was based on this site, far from comprehensive. What we’d read is you can swap in a more modern engine, as long as it retained its stock emissions equipment, and was from the same class of car (sports car to sports car, sedan to sedan, etc. You can’t put a Veyron motor in a minivan.)
Overly-simplified is our name.
But MotoIQ is actually going through that process, and they’re experience pointed out a lot of unknowns. Discrepancies with the BAR referee, how valuable an EO sticker is, and (shocking) how misinformed government employees can be. If you’re thinking about swapping a motor, or are curious as to why these guys wasted hours, at multiple idiotic locations, only to have it all certified in a matter of minutes by one
lenient smart technician, jump to their post.