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It is done...(well almost)
Bingo - Brian's got it. If your timing was varying enough for the impact
to occur in the first place (loose crank gear) then a good solid whap on a
couple of valves would easily send it back the other way.
Drew
On Sat, 25 Oct 2003, brian_wagner wrote:
> Not entriely true, in theory yes. But it is possible the interference of the
> origanal hit, would have caused a change in the timing again. The force and
> a brief instantaneous stop and restart along with the fact the lower cog was
> loose may have have the rest from an untimely death.
>
> IMHO
>
> Brian
> ----- Original Message -----
> From: "Julie Macfarlane" <juliemac57@hotmail.com>
> To: <drew@scirocco.cs.uoguelph.ca>
> Cc: <scirocco-l@scirocco.org>; <rocco16v@netzero.net>
> Sent: Saturday, October 25, 2003 8:01 AM
> Subject: Re: It is done...(well almost)
>
>
> > It didn't dawn on me till after I sent the mail. But...
> > If the timing were out enough for #4 to hit, how come 1-2 & 3 never did?
> > Thtas what we were trying to work out.
> >
> > In a running engine, the occurrance of the piston rise and valves opening
> > happens in milliseconds. After #4 crashed, the #2 should have been smacked
> a
> > few milliseconds later. (1-3-4-2 firing order). See what I mean?
> >
> >
> >
> > Julie Macfarlane
> > Menlo Park Research & Development
> > Internet Application Developer
> > www.menloparkrandd.com
> > www.montgomeryweb.org
> > Amsterdam NY
> >
> >
> >
> >
> >
> > >From: Drew MacPherson <drew@scirocco.cs.uoguelph.ca>
> > >To: Julie Macfarlane <juliemac57@hotmail.com>
> > >CC: rocco16v@netzero.net, <scirocco-l@scirocco.org>
> > >Subject: Re: It is done...(well almost)
> > >Date: Sat, 25 Oct 2003 07:43:07 -0400 (EDT)
> > >
> > >
> > >I think what Larry was aiming to say is that there were only two valves
> in
> > >the cylinder (as opposed to in the head, where they are when they're
> > >closed) when the piston came up to TDC. Normally the valves are supposed
> > >to be out of the road by the time that happens... :)
> > >
> > >The real drag about the 16V is not that it's an interference engine, but
> > >that the valves come into the combustion chamber on an angle, which means
> > >when they get smacked by the piston, they bend. At least on the diesels
> > >(you knew it was coming, didn't you?) you generally end up with valve
> > >impressions in the piston tops and nothing more. Of course, you can also
> > >end up with some spectacular valevtrain damage, including followers
> > >getting driven out of the bore and getting wedged between the cam lobe
> and
> > >the side of the head... But on the plus side, the valves always come out
> > >unscathed....:)
> > >
> > >On Sat, 25 Oct 2003, Julie Macfarlane wrote:
> > >
> > > > Larry, sweetheart. Its a 16v. It has 4 per cyl...
> > > >
> > > >
> > > >
> > > > Julie Macfarlane
> > > > Menlo Park Research & Development
> > > > Internet Application Developer
> > > > www.menloparkrandd.com
> > > > www.montgomeryweb.org
> > > > Amsterdam NY
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > >From: "L F" <rocco16v@netzero.net>
> > > > >To: "Julie Macfarlane"
> > ><juliemac57@hotmail.com>,<scirocco-l@scirocco.org>
> > > > >Subject: Re: It is done...(well almost)
> > > > >Date: Fri, 24 Oct 2003 17:57:57 -0700
> > > > >
> > > > >Because that's all the valves there were in that cylinder.
> > > > >HTH.
> > > > >Larry
> > > > > We must have talked for an hour
> > > > > trying to work out why the thing only took out 2 valves...
> > > > >
> > > > >
> > > >
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> > >--
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> > >| 84 Wolfsburg Edition TurboDiesel Scirocco |
> > >| http://scirocco.cs.uoguelph.ca/gtd |
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/=============================================\
| 84 Wolfsburg Edition TurboDiesel Scirocco |
| http://scirocco.cs.uoguelph.ca/gtd |
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