I am in the process of rebuilding the head of my '88 80 quattro (240k, oil
consumption about 1 quart per 500 miles -- compression good, almost 190 on each
of the cylinders, so I am suspicious of the valve guides and seals).

As I have been tearing off the extraneous bits, I noticed what seemed like a
lot of oil coming from the crankcase breather tube that connects into the
rubber boot leading to the throttle body. Inside of the IM has had a lot of
oil run through it. I have the newer metal piece on place of the original
rubber crankcase hose at the block. And, I am wondering if there is a way to
prevent this from recurring?

Also, what is the preferred way to remove the downpipe from the EM?

Your thoughts are appreciated.

-- Tom Werner

 

Oil on the IM is usually due to a leaky valve cover gasket. Causes
vacuum leaks too.

The crank case breather needs to be fixed to maintain vacuum along with
all the other vacuum bits to allow it to run well.

Valve guides sound like a good solution to your oil problem.

Tony
'91 100 Q 5spd

NPNoonan wrote:
> I am in the process of rebuilding the head of my '88 80 quattro (240k, oil
> consumption about 1 quart per 500 miles -- compression good, almost 190 on each
> of the cylinders, so I am suspicious of the valve guides and seals).
>
> As I have been tearing off the extraneous bits, I noticed what seemed like a
> lot of oil coming from the crankcase breather tube that connects into the
> rubber boot leading to the throttle body. Inside of the IM has had a lot of
> oil run through it. I have the newer metal piece on place of the original
> rubber crankcase hose at the block. And, I am wondering if there is a way to
> prevent this from recurring?
>
> Also, what is the preferred way to remove the downpipe from the EM?
>
> Your thoughts are appreciated.
>
> -- Tom Werner

 

>
>Oil on the IM is usually due to a leaky valve cover gasket. Causes
>vacuum leaks too.

Sorry, Must have been a typo on my part. I have oil flowing INTO the Intake
Manifold, most likely source being the Crankcase Breather Hose. I'd like to
minimize or, preferably, stop this.

Thanks,

Tom.
>
>The crank case breather needs to be fixed to maintain vacuum along with
>all the other vacuum bits to allow it to run well.
>
What is the procedure for fixing the Crankcase Breather?

>Valve guides sound like a good solution to your oil problem.
>
>Tony
>'91 100 Q 5spd

 

Tom,
Apparently 80's Chev(?) V8's had an oil catch device mounted on their
crankcase ventilation system. There was a discussion in Audifans about
plumbing one of these in to the Audi system to address the oil in the intake
issue. Check the archives at that site (or talk to your friendly local V8
guy).
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"NPNoonan" <npnoonan@aol.com> wrote in message
news:20031026080934.14580.00000117@mb-m20.aol.com...
> >
> >Oil on the IM is usually due to a leaky valve cover gasket. Causes
> >vacuum leaks too.
>
> Sorry, Must have been a typo on my part. I have oil flowing INTO the
Intake
> Manifold, most likely source being the Crankcase Breather Hose. I'd like
to
> minimize or, preferably, stop this.
>
> Thanks,
>
> Tom.
> >
> >The crank case breather needs to be fixed to maintain vacuum along with
> >all the other vacuum bits to allow it to run well.
> >
> What is the procedure for fixing the Crankcase Breather?
>
> >Valve guides sound like a good solution to your oil problem.
> >
> >Tony
> >'91 100 Q 5spd
>
>