Starting a thread on my 2007 b7 a4 BHW swap. I have never taken on a project like this and figured I should share my journey and things I learn.
This Audi a4 Avant is a 2007 b7 with the 3.2l v6 (BKH engine code) mated to a 6 speed manual (FUB GYY trans code). Bought the car in Washington and trailered it home. Engine had 200k and was having issues at low rpm. Interior is mint making a perfect car for the swap. Got super lucky finding this.
Donor car is a Passat wagon with a blown transmission.
I ripped the front bumper off getting it off the trailer so might replace it or if the b7.5 front bumper is compatible I might look into that.
Got excited and started to pull the motor before winter. Couple cold day in the garage and got the motor fully removed. I left the transmission in the car hoping to just bolt the BHW on without having to mess with any of the transmission components. There are 3 bolts at the bottom of the transmission I was stuck on for a while. I ended up loosening the transmission and engine mounts, lifting the engine so I could get to them.
This is where the car stands as of today. I am waiting for parts in the mail and its way too cold to get anything done out there.
I got a 240mm LUK dual mass flywheel and clutch for a b7 a4 2.0t gas and a wiring harness for a BPW from over seas. The wiring harness is from the 2.0tdi a4 its manual but its RHD. That might bite me in the ass later might need to find another one.
The one part I am still having trouble finding is the engine/transmission spacer. I have been told it needs to be 6mm. The Audi had an 11mm spacer on it, so my plan is to get the one I have machined down to 6mm if I can't find one.
Parts list
-240mm clutch
-BPW starter
-BPW wiring harness look for LHD and manual
-BPW ECU
-Engine/trans spacer 01X103551 (5.7mm)
-Pilot bearing 06B105313D
Resources
-BHW pinout https://forums.tdiclub.com/index.php?threads/bhw-pinout.504755/
-Part numbers 7zap.com
Any advice is much appreciated
This Audi a4 Avant is a 2007 b7 with the 3.2l v6 (BKH engine code) mated to a 6 speed manual (FUB GYY trans code). Bought the car in Washington and trailered it home. Engine had 200k and was having issues at low rpm. Interior is mint making a perfect car for the swap. Got super lucky finding this.
Donor car is a Passat wagon with a blown transmission.
I ripped the front bumper off getting it off the trailer so might replace it or if the b7.5 front bumper is compatible I might look into that.
Got excited and started to pull the motor before winter. Couple cold day in the garage and got the motor fully removed. I left the transmission in the car hoping to just bolt the BHW on without having to mess with any of the transmission components. There are 3 bolts at the bottom of the transmission I was stuck on for a while. I ended up loosening the transmission and engine mounts, lifting the engine so I could get to them.
This is where the car stands as of today. I am waiting for parts in the mail and its way too cold to get anything done out there.
The one part I am still having trouble finding is the engine/transmission spacer. I have been told it needs to be 6mm. The Audi had an 11mm spacer on it, so my plan is to get the one I have machined down to 6mm if I can't find one.
Parts list
-240mm clutch
-BPW starter
-BPW wiring harness look for LHD and manual
-BPW ECU
-Engine/trans spacer 01X103551 (5.7mm)
-Pilot bearing 06B105313D
Resources
-BHW pinout https://forums.tdiclub.com/index.php?threads/bhw-pinout.504755/
-Part numbers 7zap.com
Any advice is much appreciated
Last edited: