Exhaust Exit Clarification

[lonewolf583]

Hey all, I know this has been addressed in the past. I'm flirting with some more serious aero and don't like my current rear exit solution from a packaging/proximity of parts to heat/and ground clearance perspective.

 

I'd like to do a body exit exhaust (debating the door or the area just rearward of the door) and pass it through the driver's compartment to get there. With appropriate heat shielding and cabin air flow of course. I don't want to stop roasting my trans and diff just to roast myself instead.

 

CCR

 

11.4.22 - Exhaust Exit

The exhaust must exit behind and away from the driver compartment.

 

I presume the exit point specifically is what is being considered here. I'd like some clarity here. Can I pass it through the passenger door or does it have to be rearward of the plane of the driver?

[Murphdog]

I’m curious about this as well

[Murphdog]

Found this thread from 2011 showing the exhaust running through the cab. Can anyone clarify if this is still legal?

 

[davidfarmer]

I've boxed exhaust in before, seems like a lot of heat in the driver compartment without some sort of air-break between.........

[Murphdog]

So is this legal in ST/TT?

[Greg G.]

The past determination of this rule is that the exhaust must exit behind the driver.  Of course, there is a Mod Factor in ST/TT of -0.2 for bringing the exhaust through the floor or modifying the floor for exhaust clearance or taking it through the rocker panel.   But, yes, it is permitted.

[Murphdog]

Thank you Greg for your input.