[Vwdiesel] Piston Ring questions

[Andrew .Libby]

What do you consider excess blowby and what issues do you perceive from
excess blowby that necessitates doing a ring job?  Are you using enough oil
to justify the cost of a ring job?


On Sun, Feb 10, 2013 at 10:16 AM, Stephen Kraus <ub3ratl4sf00 at gmail.com>wrote:

> Well, to be honest I already had the Goetze Piston ring kit from my last
> rebuild, they accidentally sent me two kits. So I'm just buying the 2nd
> compression rings, I don't feel like sending mine off to be modified.
>
> On Sun, Feb 10, 2013 at 12:14 PM, <lbaird119 at aol.com> wrote:
>
> >   While somewhat true, you're buying two sets of rings that way.  You can
> > also send your second ring in to be modified for less but it has to be
> cast
> > rather than chromed.  Goetze are always a chromed second I believe.
>  Total
> > Seal claims to have less outward pressure and therefore less drag and
> wear
> > than stock rings too.  I've done one recut and the rest I've done in full
> > sets.  Power increase, while small, could be felt on my 1.5.  MPG went up
> > about 1mpg as well.  Blowyby nearly disappears.
> >     Loren
> >
> >
> >  -----Original Message-----
> > From: Stephen Kraus <ub3ratl4sf00 at gmail.com>
> > To: lbaird119 <lbaird119 at aol.com>; vw fans <vwdiesel at vwfans.com>
> > Sent: Sun, Feb 10, 2013 9:09 am
> > Subject: Re: [Vwdiesel] Piston Ring questions
> >
> > Found it. The 1.7l rings they sell are the correct bore (79.5mm)
> >
> > So, that is what I'll order. From what I'm reading on TDIClub though, I
> > only need the 2nd compression ring, stop Goetze top and oil rings are
> fine.
> > Is that true?
> >
> > On Sun, Feb 10, 2013 at 12:04 PM, <lbaird119 at aol.com> wrote:
> >
> >>
> >>   Do a little research and find out the bore dia and ring widths then
> >> just call to order.  When I got rings for the 1.5, 1.6 and 5 cyl they
> >> weren't even listed but were available no problem and they knew the
> correct
> >> ones for them.  I didn't even have to know the sizes other than my
> overbore
> >> amount.
> >>     Loren
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: Stephen Kraus <ub3ratl4sf00 at gmail.com>
> >> To: lbaird119 <lbaird119 at aol.com>; vw fans <vwdiesel at vwfans.com>
> >> Sent: Sun, Feb 10, 2013 8:04 am
> >> Subject: Re: [Vwdiesel] Piston Ring questions
> >>
> >>
> >>
> >>  Question: I'm at Total Seals website, but for 1998 Volkswagen Jetta TDI
> >> its showing as a 1.7l instead of 1.9l
> >>
> >>
> >>
> >> On Sun, Feb 10, 2013 at 1:16 AM, <lbaird119 at aol.com> wrote:
> >>
> >>   Smoke at startup.  Oil smoke or unburned fuel smoke?  Typically I'd
> say
> >> startup smoke wouldn't likely be rings but I've experienced where it
> was.
> >>  Generally I'd first blame worn injectors.  Otherwise valve stem seals
> and
> >> the occasional turbo are more soon to blame on the TDI motors, so it
> seems.
> >>  Not too common for the seals on those either.
> >>
> >>   Boring's not bad.  Clean the block well and strip it.  You should be
> >> able to get it done for $20/hole or less.  It's the pistons that get
> you!
> >>  :-)  As stated, if it needs bored, it's not worth doing wrong.  You'll
> get
> >> about 30K at best and use oil the whole time.  Experienced that one too,
> >> all on the older, IDI engines of course.  Only way to tell is to mic the
> >> bores.  If the pistons are worn a bit and cylinders a bit, new rings
> might
> >> just do but if the bore's worn beyond spec, it's just a time consuming
> >> band-aid.
> >>
> >>   How much blowby?  If you compare it to a gasser, a diesel will always
> >> shock you at how much blowby it has but is still perfectly fine.  If you
> >> don't like blowby, spend some more money (how much more depends on if
> >> you're buying Co-fap or Goetze rings!) and buy Total Seal rings.  There
> >> will be little blowby and once the boost hits, it goes almost completely
> >> away!  :-)  Well worth it IMO.
> >>      Loren
> >>
> >>
> >>
> >>
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> >>
> >
> >
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