MC1 - while I'm at it..bottom end work?

[Ben Swann]

On that note, I am leaning toward leaving well enough alone.  I have been
running synth, and the motor has been tight.  The rings are seated and
engine using under a quart in 5kmi mostly attributed to turbo bearings.

Once I take the pan off to check, then I'd at least want to do rings (not
that cheap) and rod shells(cheap) plus you need all of the gaskets.

It is not that I'm lazy, but have far exceeded my budget, and there is
always a risk that I could do more harm than good when I dismantle the
bottom end.

I never got an answer on this..Can the block be removed out the bottom
without disturbing everything topside?

Ben

On Friday, March 01, 2002 12:01 PM, Dave Glubrecht
[SMTP:daveglu at hotmail.com] wrote:
> Depending on your ability level and financial position.  Here I will
assume
> you don't want to spend unnecessary $$$.  I would at most pull the
pistons,
> hone the cyl's, install new rings, new rod bearings (easy to verify oem
spec
> by STD on the old ones) and reassemble.  This along with the head work
> is/was often done with the block in the car.
> You will almost certainly find the bearings in great shape and some will
> reinstall them. The main advantage to the block work is to put in new
rings.
> If your ability level does not justify this work, the block should be
fine
> left alone.  If you want to be anal, you can spend LOTS of $$ on machine
> work and new parts (oversize pistons) the pistons are expensive due to
that
> there is no demand and each order must be custom made.  I don't ever
forsee
> buying new pistons for german auto's.  If needed, I will buy a engine
that
> doesn't need new ones.
>    Dave G
> ----- Original Message -----
> From: "Ben Swann" <bswann at worldnet.att.net>
> To: <quattro at audifans.com>
> Sent: Thursday, February 28, 2002 6:27 AM
> Subject: MC1 - while I'm at it..
>
> > '87 5000 Quattro Turbo Avant engine rebuild -
> >
> > While I'm in the middle of the insanity - the engine is out and the
head
> is
> > on the bench - stud extraction in process...will lap valves, new seals
and
> > performance springs, 264I/260E cam.
> >
> > Should I even consider to touch the lower end?  I had only planned on
> > replacing front and rear oil seals.
> >
> > The engine has about 160kmi on it, has been running synth for some
time.
> >  Good compression.  The hone marks are still visible on the cylinder>
walls,
> > and their is a slight amount of carbon on the piston tops, but nothing
> > unusual.   The engine had been running beautifully at 1.8-2bar, with
> > exception of manifold crack and 2 studs breaking off upon removal -
they
> > may have already been gone.  The number 4 cylinder appeared had more
> > whitish carbon deposit on the exhaust valve than the rest.  Yes the
motor
> > mount did fall apart upon removal - surprise!
> >
> > I will be installing 2 piece manifold + highflow cat and exhaust
coupled> to

 Correction - K26/T04 turbo.

> >
> > Would I be jinxing myself not to do the rings, or should I leave well
> > enough alone?  I certainly don't want to risk doing more harm than
good.
> >  However, I sure dont want to pull this motor again any time soon.  On>
that
> > note though - If I did need to, can I remove the bottom end if need be>
from
> > the bottom, leaving the head and manifolds intact?
> >
> > Ben