MC using oil and fouling plug. - porting and polishing

[jim green]

Great, considering I can get another head for cheep, I
may rebuild, polish and port it.  I will probably go
the cheep and easy route.  How big of a difference do
you think the porting and polishing would make?  I ask
because I'm getting ready to put Javad's old manifold
on with the extra injectors:-) I would like to do it
all in one weekend if I am going to put a modified
head on, but I am anxious for more power.  I may just
have to be patient and do it right.

Thanks,
Jim
'89 90tq

--- Huw Powell <audi at mediaone.net> wrote:
> it's not a hard job in itself - there is a tool for
> compressing the
> valve springs that is pretty much necessary.  The
> job will be easier on
> a bench (head off) but it's ok on the car.  It is
> hard to tell if the
> seals are seated properly when you put them in, but
> I guess mine worked
> out as they halved oil consumption.  there are these
> little clear
> plastic aids to installation you, will want to have
> a few on hand (they
> go over the top of the stem and prevetn damage to
> the seal).  You will
> want to have a way to keep the valves in place while
> doing the job,
> compressed air into the spark plug hole worked ok
> for me, I suspect even
> putting each cylinder at TDC would work, too.  The
> compressed air trick
> is cute because the piston will go to BDC under the
> pressure - and if
> the rings are really bad you'll hear air coming out
> in interesting
> places...
> 
> Good time to throw in new lifters if they are noisy,
> since they will be
> out.
> 
> This was a "one evening" type job.
> 
> Good time for porting and polishing the head if you
> can afford the down
> time.
> 
> jim green wrote:
> > 
> > Recently my MC engine has been using more oil than
> > normal.  Compression reads 120 psi accross the
> board
> > (I live at 6000 ft).  No excessive oil in the
> intake
> > pipes from the turbo, but my #3 plug is fouled and
> > caked with gunk.  I'm thinking valve seals.  I
> have to
> > pull off my intake manifold soon, so I figure I
> might
> > as well do some work if needed.  Advice?
> > Thanks,
> > 
> > =====
> > Jim Green
> > '89 90tq
> > http://www.geocities.com/jeg1976/
> > 
> > __________________________________________________
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> 
> -- 
> Huw Powell
> 
> http://www.humanspeakers.com/audi/
> 
> http://www.humanthoughts.org/


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