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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