[s-cars] 2004 S4 Avant V8 -- Report on Test Drive

[Scott Justusson]

Neither of the below is 'technically' correct.  Chris, Enforcement has nothing to do with LEGALITY.   This swap would be illegal on many fronts, according to the Federal EPA Laws.  Cody, IIRC from the trades, engine swaps must comply with emissions of the vehicle OR the engine, whichever is newer.  The 1991 EPA 'clarification' addresses additional questions regarding engine swaps, but the base laws haven't changed.

So, swapping an 'old' engine into a newer car would be tough, because I doubt the AAN could pass the newer emission standard.  Since every vehicle since 1996 (specifically excluding the AAN) must be OBDII, this will be a problem for a B6 car sporting an AAN.  Since the B6 also never had an AAN 'option' engine, it would be illegal to swap this engine period.

Also inducted into the EPA hall of fame, is the catalyst rules.  Cats must be in the stock location, and of the same number and configuration as from the factory.  Yup, Stromung exhausts are flat illegal too, it's missing one of the cats.

IMO/E a newer engine into an older chassis is not really that difficult to demonstrate as 'cleaner' and more efficient to these rules (AAN into urq or 4k chassis for example).  An older engine into a newer chassis after 1973, is not only difficult, but to the AAN>B6, nary impossible to be 'legal' at the EPA Federal level.  Enforcement?  Lucky for most tweeksters, State EPA mandates are much less strict in enforcement.  But, I know in Illinois if you did this swap, the techs would want to plug into that OBDII port to check a AAN equipped B6, and you would fail until they could.  Since EPA compliance is a condition of license plate renewal, you could enjoy this swap for 11.9 months....


HTH


Scott J
4 x 20vt engines, but only 1 chassis with 3B from the factory 




 


-----Original Message-----
From: chris chambers <fastscirocco_2000 at yahoo.com>
To: Cody Forbes <cody at 5000tq.com>
Cc: Robin Stoddard <robinstoddard at icloud.com>; Keith Franchetti <skidfranc at gmail.com>; S-CAR list <s-car-list at audifans.com>
Sent: Tue, May 7, 2013 7:31 pm
Subject: Re: [s-cars] 2004 S4 Avant V8 -- Report on Test Drive





Laws regarding engine swaps vary by state .... Do whatever swap you want here in 
Michigan.





>________________________________
> From: Cody Forbes <cody at 5000tq.com>
>To: chris chambers <fastscirocco_2000 at yahoo.com> 
>Cc: Robin Stoddard <robinstoddard at icloud.com>; Keith Franchetti 
<skidfranc at gmail.com>; S-CAR list <s-car-list at audifans.com> 
>Sent: Tuesday, May 7, 2013 6:03 PM
>Subject: Re: [s-cars] 2004 S4 Avant V8 -- Report on Test Drive
> 
>
>Legally speaking any engine swaps registered for the road are required to be a 
same or newer model year engine than the chassis. If you have to go through 
inspection that's a no-go.
>
>-Cody Forbes (mobile)
>
>On May 7, 2013, at 2:27 PM, chris chambers <fastscirocco_2000 at yahoo.com> wrote:
>
>> Robin,
>> 
>> How about looking for a  B6 S4 with engine issues and swap in an AAN?
>> Buy cheap and build the car you want.
>> 
>> 
>> Chris
>> 
>> 
>>