The Official B6 2.7T DIY/Swap Guide

[quattroloco]

I just need that full harness which I don't have.

What if you knew the gauge and length of each wire... replicate the harness without all the plugs for cheap. I could measure the basic legnth of each tail and the wires it includes... could you hook it up reletavely factory so it works? normal, without a manual switch off the thermoswitch. It really sucks they cut the harness but I bet I could replicate mine and you would have to connect to the module and add conectors which im sure i could rob some similar ones off the A6 that you could pin or whatever

[quickspeed]

Would something like this:
http://www.summitracing.com/parts/HDA-3647/?rtype=10
Be worth checking out at all?

[nein-reis]

Let me know when you find the fix, my fans do not work from my motor swap either.

[AudiA4_20T]

Let me know when you find the fix, my fans do not work from my motor swap either.

Yea that should be an easy fix man. Just need to dig into the diagrams

[B_EEZY]

Would something like this:
http://www.summitracing.com/parts/HDA-3647/?rtype=10
Be worth checking out at all?

I'm running a similar kit, it works well.

[quickspeed]

Are any of you running widebands? Im thinking of wiring up a Zeitronix ZT2 while the harness is out.

[AudiA4_20T]

Are any of you running widebands? Im thinking of wiring up a Zeitronix ZT2 while the harness is out.

Why? 2.7T is such a canned tune. They just work

[quickspeed]

Why? 2.7T is such a canned tune. They just work

Have it from a previous project I abandoned. Plus I like screens and buttons I can click.

[AudiA4_20T]

Have it from a previous project I abandoned. Plus I like screens and buttons I can click.

Spillner?

[dougyfresh]

I couldn't use my AWE shrouds with the s4 bumper. They would have needed to be seriously hacked up to fit. I'm looking for some factory ones to mutilate.

The B6 S4 and B6 A4 USP bumpers have about the same room behind them.

Axial distance from the A/C condensor to the bumper is the same on all B6 bumpers.

Radial distance (top to bottom) is different on aftermarke bumpers but all OEM (S4/USP/etc..) are the same.

A 3inch thick core fits the B6 with no modifications to the bumper cover itself. Just have to modify the re-bar or replace it. Anything thicker and you are cutting the bumper up significantly.

[swededA4]

Here's a craigslist find for those ready to do a swap. http://detroit.craigslist.org/okl/pts/3102731796.html

[Wet0willy01]

I couldn't use my AWE shrouds with the s4 bumper. They would have needed to be seriously hacked up to fit. I'm looking for some factory ones to mutilate.

http://www.audizine.com/forum/showth...=1#post7723488

[quickspeed]

I have a B6 S4 MAF laying around and realized it was 85mm. Im going to figure out a way to use it. I still havent received my motor and am not sure if it came with Bosch or Hitachi.

[AudiA4_20T]

I have a B6 S4 MAF laying around and realized it was 85mm. Im going to figure out a way to use it. I still havent received my motor and am not sure if it came with Bosch or Hitachi.

Either way if you're doing bigger turbos you'll need to do the conversion to Hitachi. You have no idea what year the motor is?

[quickspeed]

95% sure it is hitachi now. I had another motor lined up that fell through with less miles which was from an 00, but the one I ended up with is from 01.5.

[nefkntym]

01.5 is hitachi. I would just stick with the hitachi maf, that is more than enough and the ecu is be expecting that anyway. A bigger maf will need a custom tune. If you going with bigger turbos, most of those tunes have you pull the hitachi maf element out of the housing and put that into a bigger housing of known size like 034's.

[quickspeed]

01.5 is hitachi. I would just stick with the hitachi maf, that is more than enough and the ecu is be expecting that anyway. A bigger maf will need a custom tune. If you going with bigger turbos, most of those tunes have you pull the hitachi maf element out of the housing and put that into a bigger housing of known size like 034's.

My motor isnt coming with a MAF. The original plan was to put a Hitachi in the 034 bit, but since the B6 has an 85mm housing im going to adapt the Hitachi to it. The car is getting dyno tuned when it's done also to get all the bits right.

[AudiA4_20T]

My motor isnt coming with a MAF. The original plan was to put a Hitachi in the 034 bit, but since the B6 has an 85mm housing im going to adapt the Hitachi to it. The car is getting dyno tuned when it's done also to get all the bits right.

might be easier to buy the 034 unit and sell the B6 S4 MAF to a Maestro guy to break even.

[S4iowa]

Motor Mounts: 8E0199351M & 8E0199352N
Transmission Spacer Plate: 01E103551C
Speed Sensor: 012409191D
3.0 Fuel Return Line: 8E0 121 109 A
3.0 Coolant Line: 8E0 201 215 C
Radiator: 8E0121251C
AC Lines:L/U 8E0260707AB 8E0260701AS
AC Condensor: 8E0260403B
Power Steering Line: 8D1422893BF

Your 3.0 fuel return line part# comes back as a coolant overflow line....

#20

COOLING SYSTEM / COOLING / RADIATOR & COMPONENTS / Overflow hose
8E0121109A - Overflow hose 3.0 LITER

MSRP Core Online Price
$129.00 $0.00 $95.98



And it looks like you have the #'s for the coolant and fuel line swapped.... and the fuel line has an updated #

Part Number was superceded!
Quick Order
Old Part Number 8E0201215C
New Part Number 8E0201215AP

Part Name FUEL LINE
MSRP $238.00
Core $0.00
Online Price $177.07

[AudiA4_20T]

$177 is brutal. Not hugely expensive overall though

[S4iowa]

$177 is brutal. Not hugely expensive overall though

Trying to source one from a salvage yard and/or get it shipped can be a PITA. Going new might not be so bad.

[AudiA4_20T]

Trying to source one from a salvage yard and/or get it shipped can be a PITA. Going new might not be so bad.

for sure. I got lucky

[quickspeed]

Here's what ive paid so far for swap parts, not including motor upgrades.

$23 each Motor Mounts: 8E0199351M & 8E0199352N
$27 Transmission Spacer Plate: 01E103551C
$12 Speed Sensor: 012409191D
$20 3.0 Fuel Return Line: 8E0 121 109 A
$30 3.0 Coolant Line: 8E0 201 215 C
$100 Radiator: 8E0121251C
$50 AC Lines:L/U 8E0260707AB 8E0260701AS
$100 AC Condensor: 8E0260403B
$25 Power Steering Line: 8D1422893BF

[NW A4]

If anyone has a running 1.8t swap, I would love to talk to them. Trying to diagnose some problems. PM me please.

[quattroloco]

getting closer... this was monday. Pulled motor and trans out and got the 2.7 sitting on the stand. shes one dirty girl.

[AudiA4_20T]

getting closer... this was monday. Pulled motor and trans out and got the 2.7 sitting on the stand. shes one dirty girl.

ballin

[daihashi]

I really need to look into getting doing this conversion. Mostly because I'm starting a locost project (will likely take at least 1.5-2 years to complete, that's being optimistic) and would like to use the 1.8t currently in my car as the platform since it puts out pretty good power considering the size/weight of the engine; would make for a fun car.

[quattroloco]

i did some research at the parts store today and they printed out spec sheets for me on front axles for C5 A6, B5 S4, and B6 A4... other than overall compressed legnth they all share the inboard flange size, style and bolt pattern. so as far as the tranny part of my swap ill just need to by front axles for the B6 manual trans but with selling the other four axles i have should about pay for them.

[quickspeed]

My new motor gets in tomorrow, finally.
Then the harness and a tune and im ready to go.
I also have to sell this 4.2 engine. How much is this thing worth? Its got new cam adjusters and all.

[dougyfresh]

i did some research at the parts store today and they printed out spec sheets for me on front axles for C5 A6, B5 S4, and B6 A4... other than overall compressed legnth they all share the inboard flange size, style and bolt pattern. so as far as the tranny part of my swap ill just need to by front axles for the B6 manual trans but with selling the other four axles i have should about pay for them.

Really? I thought the B6 A4 front driveshaft flanges are different from the B5s (and C5s).

[quattroloco]

my set up may be different than what some guys are doing... at first i was told to find a b6 6mt to swap but i ended up with a c5 parts car and the axles (c5 mt, b6 mt) side by side have the same bolt pattern ect checked with a digital caliper is the same. everything from the abs ring, number of flanges, bolt size and legnth is the same. the only difference is the overall compressed legnth of the axle. By the way, fun fact... the B5 S4 passenger axle is the exact same axle and part number as a C5 A6 driver axle... now you know. lol.

as far as flanges goes the b6 have a cover on the inside joint that keeps the grease in but i have a feeling that can be popped off and bolt right up because the drive flange keeps that grease in... maybee i have to swap the front tranny flanges. so I think your right dougyfresh.

[AudiA4_20T]

They are certainly different as far as flanges go but if you're using the 01E I could see them working. Id much rather have the sealed B6 flanges tho

[quickspeed]

Got the engine yesterday.
It was a little dirtier and missing a few more things than I thought, Including injectors hanging out and coil packs missing.
Ordered 2.0t coil pack conversion and new 750cc Injectors.
Cleaned and painted some motor parts also. Just waiting on the last bits.

[quattroloco]

lookin good!

[quattroloco]

clint Im almost ready for a harness... hows it coming?

[AudiA4_20T]

Going really well I have a new order of plugs and wires to check out. These are the final steps right now.

[widgget]

whats it gonna cost for the harness once it's all put together?

[quattroloco]

earlier suggested $500. well worth it if your not interested in sitting with the two bentleys for a few weeks diagraming what goes where... I have a feeling it will look and feel pretty factory too. I believe it will conect the four plugs under the ecu from the b5 engine harness to the plugs on the b6. clint can elaborate on that. also... will it matter if my APB engine came from a 2000 C5 A6 vs an S4? plug wise?

[AudiA4_20T]

earlier suggested $500. well worth it if your not interested in sitting with the two bentleys for a few weeks diagraming what goes where... I have a feeling it will look and feel pretty factory too. I believe it will conect the four plugs under the ecu from the b5 engine harness to the plugs on the b6. clint can elaborate on that. also... will it matter if my APB engine came from a 2000 C5 A6 vs an S4? plug wise?

Yes. Exactly. Will go between the 5 B5 plugs and 4 B6 plugs with the grommet needed and all relays for it. Going to work more on this tonight.

Anyways, I've been driving the car now for awhile and other than the damn rear left tire blowing out on me it's been a champ. The MAF went out because of the ghetto intake I have set up but the torque is just great. I realized I was in 6th going 40 the other day and gave it half throttle at 1500rpms, BOOM she took off effortlessly. I think my 1.8T would have shat itself trying to do that in 6th.

Did get the speed sensor in the mail and put it in, but still didn't get rid of the code and 5000rpm rev problem so I'll have to dig more into that.

[quattroloco]

Im ready when you are. I really wanted to go stage three before installing but i have no patience and will be spending enough on maintenace just to be happy putting it in my car. plus i kinda think it might be a good idea to just get it in and work any kinks out before i do turbos and add more variables to the swap. i already have a cust 2.5 catless exhaust and piggies so ill probley go stage 2 and save up for everything else next year.