[V8] 3.6 to 4.2 swap

[Coleman, David]

The 4.2 swap is pretty much near a bolt-in / plug-in.

The ABH, IIRC, required no mods to accept a manual trans, though there
will be a bolt hole or two in the bell housing that go unused.  Keith at
audiconnection did the actual labor on mine, since I was still burnt out
from R&Ring my PT for a timing belt, clutch, and rebuild.

Biggest issue I have is my 5 speed ECU seems to cause the ABH to run
rich.  I just haven't had the time to diagnose further.

Give me some time to think -- I'm sure I'll remember a couple other
issues.  But w/ your experience, I think you'll find it as
straightforward as you could hope.

-DaveC.



> -----Original Message-----
> From: v8-bounces at audifans.com 
> [mailto:v8-bounces at audifans.com] On Behalf Of Thomas Barbera
> Sent: Monday, July 03, 2006 10:18 AM
> To: v8 at audifans.com
> Subject: [V8] 3.6 to 4.2 swap
> 
> Fellow V8 fans,
> I am in need of a clutch for my '91 V8 5spd.  I'm considering 
> (while I'm at it) swaping my 3.6 for a 4.2 from my brother's 
> car ('93 v8) which just lost its slushbox.  I know there have 
> been write-ups in the past on this issue but I can't find 
> them.  How difficult is this task?  My motor is tired (200k
> miles) and needs a top end rebuild if I don't do the swap.  I 
> found a few threads that suggested it is a very difficult 
> swap.  I find this hard to believe considering the 
> similarities of the engine bays and wiring harnesses.  The 
> only big issue might be the manual tranny/4.2 mating.  Anyone 
> have any pointers? 
> Can you put me in the right direction?  What parts do I need? 
>  I have performed in the past an MC conversion in my old '86 
> 4kq.  It surely cannot be nearly as difficult as that 
> project.  Thanks in advance.
> 
> Tom B.
> '91 Audi V8 5spd
>    
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