For the first time in 2 years, the FD is on the ground with an exhaust system. The SP Muffler’s 3.5” FD RX-7 Catback Dumpy Muffler looks great on the car and will ensure the flames will be angled down to the ground and away from burning or lighting the rear bumper on fire.
I might be a little biased towards “dumpy” or “dolphin” tip exhausts due to racing in Time Attack events early in my racing career competing in my uncle’s 13B REW powered Datsun 510 and shooting flames out of a “dumpy” exhaust tip.
We couldn’t be happier with the look of the SP Muffler. Our FD’s exhaust is now complete with a 4” downpipe with recirculated wastegates and a custom 3.5” exhaust with SP Muffler 13” resonator and 16” rear muffler with a dumpy tip. This setup should more keep the volume in check and be capable of handling a significant amount of power.
The modular exhaust was fabricated by yours truly using Vibrant Performance mandrel bends and tubes, Vibrant V-band clamps, and Vibrant Bellows and was finish welded and advised by Mario at TSR Fabrication. We are getting closer to firing up the FD and we can’t wait to hear what this will sound like. Stay tuned!
SOURCES
VIBRANT PERFORMANCE
SP MUFFLERS
TSR FABRICATION
FULL-RACE
HEATSHIELD PRODUCTS
BILLY JOHNSON RACING
3 comments
Billy, the exhaust looks fantastic. Every update gets us close to the full reveal of this monster!
Thank you! I’m a bit behind on articles so there will be more updates that will come out soon. The car is close to firing up!
I see you’re also a glutton for punishment wrenching on cars while laying on our backs, ha! Excited to see this up and running with all the extensive and detailed work on it.