Nope. The dip stick is fine. It works without leaks with the ZS carb because the
positive crankcase pressure is relieved by the vacuum port on the ZS carb. Not
so with the Weber.
Vic W.
Jeff McNeal wrote:
>
> This may sound a bit silly, but do you think that the dipstick itself might
> be your real problem? Does it fit really tight except for when the engine
> is running? I guess my point is this: If you're not having a blowby
> problem at the carb, and getting good airflow out the crankcase vent, then
> how could it be anything *but* the dipstick fitting that's causing the
> problem?
>
> Best wishes,
>
> Jeff in San Diego
>
> '67 RHD Spitfire Mk3 aka "Mrs. Jones"
> '68 LHD Spitfire Mk3 frame-off resto project
> Jeff's Classic '67 Spitfire Mk3 site & Vintage Spitfire Webring
> http://www.ohms.com/spitfire/spitfire.shtml
> home of the NEW Totally Triumph Auction
> "By Triumph enthusiasts, for Triumph enthusiasts"
> http://www.ohms.com/cgi-bin/TRauction.cgi
> and..The Totally Triumph Garage forums -- moderated, focused, friendly!
> http://www.ohms.com/cgi-bin/dcforum/dcboard.cgi
> ...plus a few other surprises!
>
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>
> ----- Original Message -----
> From: "Vic Whitmore" <vicwhit@home.com>
> To: "Jeff McNeal" <jmcneal@ohms.com>
> Cc: "Sizemore, Shane" <Shane.Sizemore@per-se.com>; "Spitfires Maillist"
> <spitfires@autox.team.net>
> Sent: Friday, March 30, 2001 9:36 AM
> Subject: Re: Weber DGV vacuum
>
> >
> > Yup. I connect the hose from the valve cover to the plastic angle
> connector on
> > the under side of the air filter. I used the same hose as the ZS and it
> has no
> > blockage. Not much oil appears in the carb but it sure makes a mess around
> the
> > dip stick. This is just sitting in the garage, revving the engine to road
> RPMs.
> >
> > Vic W.
> >
> > Jeff McNeal wrote:
> > >
> > > Just so I understand what's happening here... You say that when you
> > > connected the venting hose to the plastic angle connector that snaps to
> the
> > > underside of the air cleaner plate on the DGV, you get oil all over the
> > > place at the carb AND the dipstick blows out as well? Are you sure you
> > > don't have a blockage of some sort in the vent hose? By the way,
> you're
> > > going to love the Pierce manifold. Works great.
> > >
> > > Best wishes,
> > >
> > > Jeff in San Diego
> > >
> > > '67 RHD Spitfire Mk3 aka "Mrs. Jones"
> > > '68 LHD Spitfire Mk3 frame-off resto project
> > > Jeff's Classic '67 Spitfire Mk3 site & Vintage Spitfire Webring
> > > http://www.ohms.com/spitfire/spitfire.shtml
> > > home of the NEW Totally Triumph Auction
> > > "By Triumph enthusiasts, for Triumph enthusiasts"
> > > http://www.ohms.com/cgi-bin/TRauction.cgi
> > > and..The Totally Triumph Garage forums -- moderated, focused, friendly!
> > > http://www.ohms.com/cgi-bin/dcforum/dcboard.cgi
> > > ...plus a few other surprises!
> > >
> > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> > >
> > > ----- Original Message -----
> > > From: "Vic Whitmore" <vicwhit@home.com>
> > > To: "Sizemore, Shane" <Shane.Sizemore@per-se.com>
> > > Cc: "Spitfires Maillist" <spitfires@autox.team.net>
> > > Sent: Friday, March 30, 2001 9:05 AM
> > > Subject: Re: Weber DGV vacuum
> > >
> > > >
> > > > The aluminum valve cover has a similar outlet to the standard cover so
> I
> > > don't
> > > > see how it would change things. In fact it may be worse. The aluminum
> > > cover does
> > > > not have any baffle on the inside like the standard one.
> > > >
> > > > Vic W.
> > > >
> > > > "Sizemore, Shane" wrote:
> > > > >
> > > > > I thought the aftermarket aluminum style valve covers with breathers
> > > took
> > > > > care of this issue?
> > > > >
> > > > > Anyone using them?
> > > > >
> > > > > -----Original Message-----
> > > > > From: Jeff McNeal [mailto:jmcneal@ohms.com]
> > > > > Sent: Friday, March 30, 2001 11:35 AM
> > > > > To: Vic Whitmore; Spitfires Maillist
> > > > > Subject: Re: Weber DGV vacuum
> > > > >
> > > > > I'm not sure why my high compression 1296 engine (9.0:1) doesn't
> have a
> > > > > problem, but I have the crankcase ventilation connecting to the top
> > > plate of
> > > > > my Weber DGV as designed and have no problems with excessive oil
> blowby
> > > > > whatsoever...
> > > > >
> > > > > Best wishes,
> > > > >
> > > > > Jeff in San Diego
> > > > >
> > > > > '67 RHD Spitfire Mk3 aka "Mrs. Jones"
> > > > > '68 LHD Spitfire Mk3 frame-off resto project
> > > > > Jeff's Classic '67 Spitfire Mk3 site & Vintage Spitfire Webring
> > > > > http://www.ohms.com/spitfire/spitfire.shtml
> > > > > home of the NEW Totally Triumph Auction
> > > > > "By Triumph enthusiasts, for Triumph enthusiasts"
> > > > > http://www.ohms.com/cgi-bin/TRauction.cgi
> > > > > and..The Totally Triumph Garage forums -- moderated, focused,
> friendly!
> > > > > http://www.ohms.com/cgi-bin/dcforum/dcboard.cgi
> > > > > ...plus a few other surprises!
> > > > >
> > > > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Vic Whitmore" <vicwhit@home.com>
> > > > > To: "Spitfires Maillist" <spitfires@autox.team.net>
> > > > > Sent: Friday, March 30, 2001 6:29 AM
> > > > > Subject: Weber DGV vacuum
> > > > >
> > > > > >
> > > > > > I'll be installing a Weber DGV onto my 76 Spitfire in the next few
> > > weeks
> > > > > and I
> > > > > > need some insight from those that have "ben there, dun that". I am
> > > aware
> > > > > that
> > > > > > the positive crankcase pressure is not relieved by connecting the
> hose
> > > > > from the
> > > > > > valve cover to the air filter connection. The result is oil
> pushing
> > > out
> > > > > through
> > > > > > the dip stick.
> > > > > >
> > > > > > On the ZS, this isn't a problem because the hose from the valve
> cover
> > > is
> > > > > > connected to a high vacuum port on the carb which relieves the
> excess
> > > > > pressure.
> > > > > >
> > > > > > It would be nice if the DGV had a similar port but that doesn't
> appear
> > > to
> > > > > be the
> > > > > > case. Is it possible to add a port by opening up an existing but
> > > blanked
> > > > > out
> > > > > > port, or adding a completely new one? I would suspect that if this
> > > were
> > > > > possible
> > > > > > the jets/needles would have to be changed and I am prepared for
> that
> > > > > > eventuality.
> > > > > >
> > > > > > Failing the vacuum port, my last resort is to use a catch can (way
> > > down at
> > > > > the
> > > > > > bottom of the list) which is vented to the air filter. Some people
> > > have
> > > > > > fashioned a connection to a blanked off plate where the fuel pump
> goes
> > > and
> > > > > they
> > > > > > use an electric fuel pump. Since I use a mechanical pump, where is
> the
> > > > > best
> > > > > > place to vent the crankcase?
> > > > > >
> > > > > > Vic Whitmore
> > > > > > 76 Spitfire
> > > > > > Thornhill, Ontario
> > > > > >
> > > > > > http://www.vicwhit.com
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