Ferrari Mailing List: Re: Cam timing

[E M (pokiebaron]

If setting them right on and the car isn't running as it should, I wonder if
there are areas of wear that collectively are effecting the tolerances and
throwing things off a bit?  Little wear in the cam here, little wear over
there....

Ed
911SC

2008/12/3 Peter Pless <ferrarilst [at] pless.com.au>

> Well, my 308 marks are spot on, and so  are my 355 marks. I'm wondering if
> the people who have found them to be 'out' didn't check the cam timing
> properly rather than the marks being at fault......and if some of the
> mechanics who claim it's essential have found a nice little money spinner
> for them.
>
> 3 quite experienced ferrari mechanics I've asked here in Aus have told me
> they've never seen a car with timing marks that were wrong. Surely by the
> time the 355s were made machining was accurate enough that the marks should
> be spot on, and I've been told that with older cars the marks were made
> manually by the engine builder when he dialled the cams in.
>
> That why I asked if anyone ON HERE (I read fchat) has found marks to
> actually be wrong. To me it makes sense that they should always be spot on,
> but then, I stopped being surprised about Ferraris long ago.
>
>
>
> -----Original Message-----
> From: jimshadow [at] verizon.net [mailto:jimshadow [at] verizon.net]
> Sent: Thursday, 4 December 2008 7:59 AM
> To: Peter Pless
> Cc: The FerrariList
> Subject: Re: [Ferrari] Cam timing
>
> That's interesting.....my car has very noticeable marks that are dead
> on.....
> I figured that the first motors (mine is 0058) were carefully put together
> with the marks and all........
>
> Jim
> ------Original Message------
> From: Hans E. Hansen
> Sender:
> To: Jim
> Cc: The FerrariList
> Subject: Re: [Ferrari] Cam timing
> Sent: Dec 3, 2008 12:46 PM
>
> My car is currently in for a belt change.  The mechanic ask me if I wanted
> him to degree the cams and make a reference mark for future use.  He said
> that there wasn't anything of "real use" on the cams in the early years.
> He's charging me an extra 3 hours for this.
>
> Hans.
>
> On Wed, Dec 3, 2008 at 7:20 AM,  <jimshadow [at] verizon.net> wrote:
> > There are a bazillion threads on this subject on FChat.    Basically you
> need to degree your cams to check for accuracy if you feel they are off.
> There are some great threads written about this process.
> > The general concensus is that the marks are 'reference only' marks and
> should not be trusted until verified.
> >
> > FWIW, YMMV
> >
> > Jim
> > ------Original Message------
> > From: Peter Pless
> > To: Jim
> > Cc: The FerrariList
> > Subject: [Ferrari] Cam timing
> > Sent: Dec 3, 2008 8:27 AM
> >
> > Has anyone ever experienced the cam timing marks on a ferrari engine
> > being inaccurate? If so, was it because they weren't the original
> > heads or cams, or was it just a factory stuff up?
> >
> >
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