B6 A4 Cab engine swap for 4.2 V8

[Emperoryder]

I currently have a worned own b6 A4 Cab, and want to turn it into a project car.

It currently has the 3.0 v6 with tip, will a 4.2l v8 with 6 speed from a b6 a4 cab fit into my car??? Has anyone done this previously??? Which ECU could I run???

I want to build my own B6 RS4 Cab, rebuild the v8 and either put super/turbo charger and etc etc.

Reduce the weight of the cab, roll cage and etc etc.

Let me know if anyone has done such a extensive work on a B6 A4 Cab.

Thanks

[F16HTON]

I would venture to say the answer is no.

4.2L is a gas hog and a pig...you should consider supercharging it (ala PES) and getting a custom tune.

[D.C. Designs]

I second that :0)

[Maverick]

OP, how much money are you willing to spend? that's the first question you should ask yourself. depends on price, you will have different options.

[festerfm]

hell w/ that.. if u'r willing to spend the money to do an engine and tranny swap, do the tranny swap only, then spend the rest into turbo'ing the v6... check out http://www.ststurbo.com you could go from low boost to something sick..

[T0M3K]

Sounds like you have more cash than car is worth.
I don't know anything about cab, but if S4 cabrio exists in B7 chassis, then it should also be possible in B6. But that sounds like endless money to spent, may be cheaper to sell and buy actual S4 cabrio.

[Maverick]

hell w/ that.. if u'r willing to spend the money to do an engine and tranny swap, do the tranny swap only, then spend the rest into turbo'ing the v6... check out http://www.ststurbo.com you could go from low boost to something sick..

yeah, who is willing to write a tune for OP's car then??

here is how things go, I called EPL for a custom tune, they want $2500-4000 for a custom tune because it would be a ground up design.

sometimes putting the hardware in a car is eaiser than getting the software. without good tune, a car is worthless.

[festerfm]

true... but it's all part of the process.. sts recommends some guy in texas to do the programming. however, they say that for the low boost (5-6psi) apps they just add bigger injectors and also bigger fuel pump.. other than that you can get a stand alone fmu.. i kno it's alot to do but it is a project. to supercharge a v6 is easy and there are kits out there already but how much boost can you get from a supercharger??

[Maverick]

true... but it's all part of the process.. sts recommends some guy in texas to do the programming. however, they say that for the low boost (5-6psi) apps they just add bigger injectors and also bigger fuel pump.. other than that you can get a stand alone fmu.. i kno it's alot to do but it is a project. to supercharge a v6 is easy and there are kits out there already but how much boost can you get from a supercharger??

how do you know that supercharge a V6 is easy???
STS recommends some guy is not good enough, you need to actually have a guy that has the time, and motivation to write a tune.

[Kerschera4]

s4 cab's are really not that expensive at all on the used market. my dad is buying one for my mom. why dont you get a b7 s4 cab and go from there..
the small cost from changing from selling b6 to buying b7 would be less than purchasing all the parts you need for a full conversion.

[festerfm]

how do you know that supercharge a V6 is easy???
STS recommends some guy is not good enough, you need to actually have a guy that has the time, and motivation to write a tune.

i didnt mean it was easy, i guess the word i want is "supported". pes has a supercharger kit for the 3.0 w/ everything you need. and its not that they recommend "some guy", they recommend a shop that writes the programs for all the currently available systems they have out right now. i'm sure the toyota tundra didnt have a program written for it at one time.. that's what r&d is for.. this is directly from the website..

"Our recommended tuning solution is Nelson Performance in Texas. He has tuning available for the GM vehicles and his tuning package can be purchased through the STS Power Dealers. For more information see Tuning on the Products page. For Toyota trucks running additional boost we recommend a FMU and an aftermarket fuel pump. For high boost applications we recommend a fuel pressure regulator combined with the Unichip tuning solution."

that's just to show that it isnt "some guy" that tunes the car, it's a performance shop w/ credibility

[AudiA4_20T]

i didnt mean it was easy, i guess the word i want is "supported". pes has a supercharger kit for the 3.0 w/ everything you need. and its not that they recommend "some guy", they recommend a shop that writes the programs for all the currently available systems they have out right now. i'm sure the toyota tundra didnt have a program written for it at one time.. that's what r&d is for.. this is directly from the website..

"Our recommended tuning solution is Nelson Performance in Texas. He has tuning available for the GM vehicles and his tuning package can be purchased through the STS Power Dealers. For more information see Tuning on the Products page. For Toyota trucks running additional boost we recommend a FMU and an aftermarket fuel pump. For high boost applications we recommend a fuel pressure regulator combined with the Unichip tuning solution."

that's just to show that it isnt "some guy" that tunes the car, it's a performance shop w/ credibility

They key words there are "he has tuning available for the GM vehicles" he cannot tune Audis. We have the most advanced ECUs out there with thousands of maps. Our ECU even exceeds any SEM setup out there. You will need someone who knows these cars.

And, if you did put the V8 in, forget about aftermarket support. These are Audis, aftermarket support is as rare as it gets

[festerfm]

And, if you did put the V8 in, forget about aftermarket support. These are Audis, aftermarket support is as rare as it gets

you aint kiddin.... thats why its expensive as all hell...sexy too. so totally worth it

[docurley]

Yes you can get this to fit and you could fit a stock ecu to the engine but you will need loom and clocks.

If you are looking to Turbo charge it then I would say your best bet would be a stand alone system.

Look up Siena he will be installing a V8 in to his RS4 body B5 A4 and knows quite a lot about Audi V8's and what you might need.

[Maverick]

i didnt mean it was easy, i guess the word i want is "supported". pes has a supercharger kit for the 3.0 w/ everything you need.

PES has everything you need to blow up an engine.
PES' tune requests 17:1 A/F ratio when you are at WOT

I would love OP do a STS system and a proper tune on his car.

[festerfm]

i havent really heard anything bad about the sts kits yet.. someone would have to write a new program if OP decided to go high boost but low boost it should be fine.. just higher volume fuel pump and bigger injectors.. the caddys and mustangs are running low boost setups on their engines w/ just the injectors and fuel pump.. i'd want to research it more and talk to a rep about them.. see what they had to say..

[NightRoller USP]

Rs6 engine swap???????


DOPE!

[EYE4SPEED]

What does "worned own" mean?

Sounds like he has a rolling chassis he wants to convert. Will cost you a ton to do the swap... but if you have time, piece it together from wrecked cars.

[Emperoryder]

Well,

A little background, my car has close to 130K at the moment, engine is in bad shape, the tiptronic is slipping and jerking. The value of this vehicle is minimum and had this car for a while and would like to keep it as sentimental value.

I'm looking to start a aftermarket automotive business and need a shop car to represent my company with. We we will be renting out shop bays, so we won't be doing too much of the mechanical side of the business, but should do well in selling aftermarket retail products.

I want to do something different than others and make it stand out, that's why I'm not really thinking of doing bolt on supercharger or turbocharger.

I will be building the car from ground up, rebuilding the motor to the right compression for boost and putting the adequate transmission and rear end, losing weight by various different lighter weight products, roll cage, wheels, wide body fenders, and all the little aesthetic goods. Through sponsors, tears, and blood. I have different cars to drive, so this car could sit around and be built for several months.

Therefore, I'm trying to see what would be different and outrageous and not too crazy that I can't accomplish it.

[JMRQuattro]

^^ do it. It would be awesome. And it should give you some creativity points for you business. Make sure it's IMMACULATE and clean as hell and done down to every detail, win some good shows and use them as rep for your shop. You definitely don't want to half ass it. There is a local shop who does what you want to do by my house that puts lambo doors on everything it does and they are very unoriginal so they only have 3 trophies, 2 of which are 4th place at small shows and only 1 is 2nd place at an ok show. Their shop rep sucks and people don't go there because of it.

[Maverick]

Well,

A little background, my car has close to 130K at the moment, engine is in bad shape, the tiptronic is slipping and jerking. The value of this vehicle is minimum and had this car for a while and would like to keep it as sentimental value.

I'm looking to start a aftermarket automotive business and need a shop car to represent my company with. We we will be renting out shop bays, so we won't be doing too much of the mechanical side of the business, but should do well in selling aftermarket retail products.

I want to do something different than others and make it stand out, that's why I'm not really thinking of doing bolt on supercharger or turbocharger.

I will be building the car from ground up, rebuilding the motor to the right compression for boost and putting the adequate transmission and rear end, losing weight by various different lighter weight products, roll cage, wheels, wide body fenders, and all the little aesthetic goods. Through sponsors, tears, and blood. I have different cars to drive, so this car could sit around and be built for several months.

Therefore, I'm trying to see what would be different and outrageous and not too crazy that I can't accomplish it.

ok, I see where you are coming from and I have a suggestion for you .
First, get ready $50K for a ground up build. I am not saying you will need to spend all $50K but set that as a budget.

I recommend you have your engine built to become a bullet proof long block.
Then put a GT35R twin scroll turbo on it.
this power build will take a lot of work because many things you need will be custom. However, you will make big power and you will be very unique in the B6 3.0 world. You will also need to spend a lot to get everything right the first time. Tuning won't be much of an issue......
For the interior, if you want OEM finish, get a set of European RS4 seats or Recaro CS seats, whatever your pick.

Exterior wise, i don't know. are you a low rider?

[CO AVANT]

PM martins. He is in Europe but has swapped a regular 4.2 in. Now he is trying to swap in an RS4 4.2 iirc.

[dougyfresh]

sometimes putting the hardware in a car is eaiser than getting the software. without good tune, a car is worthless.

BINGO!

The software running our vehicles controls a whole lot more than one thinks. A ton of power/driveabilty can be had through software tweaks.

[AudiA4_20T]

do an RS6 motor

[Maverick]

do an RS6 motor

Clint, isn't a RS6 motor too big?? I meant he probably won't have room to run some of the accessories

[Emperoryder]

I'm not too worried about hardware, I am worried about software and ecu matter.

I mean they have B6 S4 Cabrio which should be the same body and mounts, therefore, if I went that route it should work out great.

I'm not sure what will be cheaper and smoother.

Doing a B6 S4 4.2 motor with it's 6 speed tranny or building my 3.0 motor with forged internals, lower compression, and the whole nine yard with B6 S4 6 speed tranny. I've talked to STS turbo about this matter.

All the other little stuff, I'm not too worried about, need to figure out the motor, transmission, and ecu matter.

Let me know

[Exanimas]

Building your 3.0 with supercharger etc will roughly cost you around $15K I think. There's a few people on here that can confirm that, but really, if you want to drop that much money, just get an S4 and the $10K supercharger from VF Engineering. I'd bet you won't be disappointed.

[CO AVANT]

http://www.audizine.com/forum/showthread.php?t=101827

[Emperoryder]

Wow...I think I rather get sponsorship for turbo/super charger and put on 6 speed tranny...

Which 6 speed would fit well to my 3.0 v6 motor???

[CO AVANT]

Agreed. 4.2 is a waste IMO unless you have mad bank for a S/C...

[Ill 3.0]

3.0 had a 6 speed option, which is rumored to be the same tranny as the B5 S4.

[Emperoryder]

I like your slogan, bringing the 3.0 to the next level.

The potential for 3.0 v6 is great, and I'm excited.

I just need to figure out this ecu and transmission issue.

So keep these infos coming.

thanks

[martini]

They key words there are "he has tuning available for the GM vehicles" he cannot tune Audis. We have the most advanced ECUs out there with thousands of maps. Our ECU even exceeds any SEM setup out there. You will need someone who knows these cars.

And, if you did put the V8 in, forget about aftermarket support. These are Audis, aftermarket support is as rare as it gets

terrible blanket statement... you know that BOSCH does the programming for many GM vehicles?... you don't know what this guy has done and what he knows.