[V8] CD shop manual

Dave Saad dsaad at icehouse.net
Thu Aug 13 16:32:20 PDT 2009


The problem with both the PT and ABH is that if you need to do any  
cylinder boring, it is near impossible and way expensive.  Apparently  
there are shops that can bring a bore back to original spec, but you  
may as well buy a new A8. (slight exaggeration)
I re-ringed my PT a while back, but had to re-use the rod old  
bearings.  I could get new rings and the rod bolts are the same as a  
VR6.  I used the torque procedure for the VR6.

I think any block made the way these are (aluminum bore, no liner)  
will have the same problem.

On the bright side, they seem to go forever - excluding the ring  
problem that many of them had/have. Apparently it was some sort of  
factory defect.

Dave

On Aug 13, 2009, at 4:54 PM, John Gourley wrote:

> 7013885254  said........................
>
>> Hey,
>>  Well I've looked into it a bit as well, and honestly it looks like a
> swap is much better >than a rebuild.  You can get gasket sets, re- 
> ring the
> engine, and use VR6 main and rod >studs as well.   But honestly I'd  
> look at
> an engine swap to an ABH  or ABZ 4.2.  Its been >done and may cost  
> more but
> your chance of success is many many times better.  Check >  
> motorgeek as well
> as search here heavily.
>
>> As always good luck
>
>
>
>
> A followup question or two related to your comments.  The V8  
> quattro is a
> model I haven't worked on.   My wife drives a 91 100 front wheeler  
> and my
> old workhorse is a 1989 200 turbo quattro avant........so some of the
> technical stuff on the V8 is new to me.
>
> You mention the ABH engine as being a possibility for a swap.  What  
> is there
> different (besides the obvious engine displacement) that make the  
> ABH a
> candidate for a swap while the PT seems to be a lost soul!   For  
> whatever
> reason are more parts available for the ABH and also  the shop  
> manual that
> covers the ABH engine, does it cover rebuilding info with the short  
> block,
> unlike the PT?   I guess my question, did Audi consider the ABH  
> short block
> to also be unrebuildable?
> Is there an advantage of using the later 4.2  ABZ engine rather  
> than the
> ABH..........other than a better chance of having fewer miles, and  
> I assume
> more hp?
>
> Also thanks to Scott for the info on the shop manual regarding lack of
> information on the PT short block
>
> John Gourley
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