|
|
Post by jasede on Dec 12, 2016 12:57:00 GMT 12
Been looking though the forum and nothing address it. I have a xf falcon sedan which has been converted to v8, under my understanding i am unable to have side exit exhaust in front of rear wheels as a 4 door and would be directly under opening door. Question is am i able to finish them under the vehicle in the boot cavitiy area behind the rear seats with them facing towards the ground? Reason is i am wanting to run twin pipes as being v8 and are unable to get pipes over the diff. Thanks in advance for all advice.
|
|
|
|
Post by Leon on Dec 12, 2016 13:33:33 GMT 12
Good afternoon,
No, you would definitely not be able to finish the exhaust system on a sedan, under the boot. The exhaust needs to go to the outer edge of the vehicle.
It might be possible to exit the exhaust just in front of the rear wheel, to the very side of the car. But I'd suggest that you show your certifier exactly what you have in mind before you commit to a plan.
|
|
|
|
Post by themidge on May 10, 2017 20:52:09 GMT 12
Good afternoon, No, you would definitely not be able to finish the exhaust system on a sedan, under the boot. The exhaust needs to go to the outer edge of the vehicle. Exhaust side pipes:NZTA regulations state: "An exhaust system must be designed, constructed, positioned and maintained in a way that minimises the risk of heat or fumes emitted from the system harming the vehicle’s occupants." The LVV requirements provide more guidance: An exhaust system fitted to a low volume vehicle must be positioned so that it terminates in a position where the outer end of the exhaust pipe is not directly underneath the passenger compartment.This allows an exhaust to end under the sealed boot floor of a sedan, tailpipe angled downwards; it does not have to protrude out beyond the rear of the bumper. Searching the forum for this topic gives me 2 completely opposite answers, both from LVVTA staff  . I see Dan's answer was 5 years ago; have the rules on this changed in the interim? What's the final determination? Cheers. |
|
|
|
Post by Dan on May 11, 2017 14:31:35 GMT 12
This is an area that is partially subjective as the original requirement is quite broad.
Our general advice is to terminate the exhaust as far rearward as possible.
Many unmodified cars have their tailpipes hidden, they end just before the bumper skin so that is obviously ok. It gets a bit more interesting trying to describe how far forward the tailpipes can be. Anyone who has driven a station wagon with the tailgate open a crack knows how easily the fumes get into the interior so it is a risk that needs to be avoided.
The LVV requirement covers the general requirement by making sure the tailpipe is rearward of any openings, but terminating the exhaust underneath the boot of a sedan can still have issues - if the boot isn't properly sealed underneath (eg. missing grommets) and to the passenger compartment (eg. speaker holes) the fumes will get in. This is more critical on an older car not running catalysts and pumping out a lot more carbon monoxide as that will do the occupants more harm.
The exhaust noise standard has a requirement for this:
"The body of a low volume vehicle must, in the areas adjacent to the vehicle’s exhaust system, be sufficiently sealed so as to prevent the entry of any exhaust
gases into the passenger compartment."
At the end of the day it is up to the LVV certifier to make an individual assessment on the vehicle being inspected, bearing in mind the general safety requirement that a vehicle must be designed and constructed using materials and components that are fit for their purpose, and must be safe to be operated on the road. This means that some vehicles will be treated differently from others due to their specific design.
|
|
. I see Dan's answer was 5 years ago; have the rules on this changed in the interim? What's the final determination? Cheers.