Back on the car, we mocked up the 304 stainless wastegate tubes and 1.75” Vibrant Bellows (P/N: 69425) with the goal of maximizing the clearance to the chassis, transmission, and especially the wastegates.
Back at the fab shop, we locked in the orientation of the first wastegate tube, while marking the second tube on the downpipe, which will get a hole cut into it.
Meanwhile, everything else is getting finish welded.
The recirculated wastegate tubes are getting finish welded and the last segments are getting tacked for their final test fit. Due to the thermal expansion of the exhaust, when recirculating the wastegate, it is very important to have a bellows or flex joint between the wastegate and the downpipe. It also makes the installation slightly easier.
After everything was test fit and verified, the downpipe was completely finish welded. The recirculation tubes have nice shallow transitions back into the downpipe which is much better for flow of the turbo and wastegates than dumping back into the exhaust with a 90-degree angle.
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.