I can recommend this company below... based on getting stacks for my TR 4A's
SU's... based on appearance and quality business practices... I can't really
say anything about performance... as I haven't truly put them to the test...
but I'm betting they're the best on the market. check them out... they have
very nice rolled edges as Kas recommends...
http://www.twminduction.com/
I enjoyed dealing with the proprietor... they were quick in delivering... and
they really do look beautiful.
I have no connection with them... but I put them on my links page within days of
receiving their product. What my gasket is to the valve cover, their stacks are
to the carbs! : )
--Justin
R. Kastner wrote:
> Most of the Webers ( original) have a stack that has a flair at the end but
> a quite sharp edge and a rolled edge will give alot more flow. Kind of
> difficult with the Webers as they are pretty close together but worth
> finding better stacks.
> ----- Original Message -----
> From: <GuyotLeonF@aol.com>
> To: <kaskas@earthlink.net>; FOT <fot@autox.team.net>
> Sent: Tuesday, January 25, 2000 3:15 PM
> Subject: Velocity Stacks and Rampipes? was SU carb fuel flow
>
> > In a message dated 25/01/00 23:05:01 GMT Standard Time,
> kaskas@earthlink.net
> > writes:
> >
> > << The shape of the velocity stacks is super important. The air is
> actually
> > drawn from the carburetor side of the air inlet and so must go around the
> > corner to get into the carburetor. Therefore making a smooth roll on the
> > edge makes this possible and will alter the value if not taken into
> > consdieration. There are several companies that make this kind of stack.
> > (NO, I don't know who off hand but I know if I wanted these parts I'd
> sure
> > find 'em.)) >>
> >
> > Dear Kas and other FOT'ers
> >
> > My Vitesse has Triple Weber 40DCOE-18's fitted with the old style of steel
> > Rampipes.
> >
> > Firstly,
> > Are they what you are referring to as velocity stacks? or is that
> something
> > different?
> >
> > Secondly,
> > I have seen some racers using a more modern design of alloy rampipes,
> > referred to as 'full radius' rampipes, which apparently exhibit increased
> > airflow due to roll back lip design...
> >
> > I would be interested to hear of your (Kas) and any other FOT'ers thoughts
> on
> > these, and whether they are a worthwhile upgrade from the old design?
> >
> > Léon F Guyot
> >
> > Triumph Sports Six Club
> > International Liaison Secretary
> > 1963 Triumph Vitesse 2-Litre Convertible
> > Wimbledon, London, England.
> >
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