Hugh Barber wrote:
> Joe,
> I have a Cannon manifold w/3 DCOEs on my 1973 TR6. You are correct that the
> linkage needs work. If you use the "as supplied" linkage, the connection
> between the
> throttle linkage on the firewall and the bellcrank under the carbs is at a 45
> degree angle to horizontal. Any engine movement translates to throttle
> movement. My solution was to reverse the firewall lever (was on "top" of the
> rod, is now underneath the rod), fabricate a heavier-duty firewall to
> bellcrank lever out of heim joints and 1/4" rod. This results in a rod that
> is parallel to the ground and minimises engine induced throttle action. If
> this is not clear (and it probably isn't) I would be happy to upload a
> drawing.
>
> Shane - if you're reading this, I am still looking for my jetting specs (I
> moved a couple of months ago and I haven't found the box with my Weber books
> yet - but I'm still looking.)
>
> Hugh Barber
> Hollister, CA
> '73 TR6
> http://thor.prohosting.com/~tr6
>
> Joe Seward wrote:
>
> > Alan,
> >
> > A source I have on hand ("Triumph TR-6 Performance" by John Fitzgerald)
> > states 3.5 psi., so this is what we are going to use.
> >
> > I found a Porsche 911 fuel pump (made by Pierburg) that puts out ~4 psi,
> > and we are using a regulator next to the Webers to drop the pressure to
> > 3.5 psi. This pump cost $60, so I like your's better already. Have you
> > tried hooking up the throttle linkage yet? I'd like to hear what people
> > have done for this, as our Cannon setup is a little too direct of a
> > connection. If the engine rocks at all, I'm afraid we'll get unwanted
> > throttle boost.
> >
> > Joe Seward
> > '73 TR6
> >
> > Alan Myers wrote:
> > >
> > > Does anyone know the correct fuel system pressure for use with Weber
> > > carbs? I seem to recall 3.5 lbs., but can't seem to confirm it with the
> > > various Weber carb manuals I have. TIA
> > >
> > > fyi: I recently purchased Facet solid state elec. fuel pump from JC
> > > Whitney, $30. What appears to be the same or very similar unit through
> > > Pegasus Racing is about $45, or from Moss for $78. (No, I don't intend
> > > to buy one from each for precise comparison!) The only downside I've
> > > found buying from Whitney is they used to send out a catalog a week!
> > > (usual disclaimer, no-financial-interest other than saving a few $$$,
> > > all of the above)
> > >
> > > Alan Myers
> > > San Jose, Calif.
> > > '62 TR4 CT17602L
> > >
> > > --
> > > MZ
I can say if you are serious about Webers, take the time to fabricate a cable
throttle. You'll be very glad you did! On the carb end, you can simply make a
bracket to slip under one of the top bolts from the manifold to hold the cable
end.
Attach to the upper throttle shaft using the supplied arm. At the pedal end,
you can
weld a bracket to the upper part of the pedal. The hole for the cable is
already
there for the PI cars. Throttle cables are redily available from just about any
street rod shop under the brand name 'Lokar'. You will probably also need to
add an
additional throttle return spring if you choose to remove the lever from the
passenger's side of the pedal shaft. You can do this by using the existing
eyelet
under the firewall for this - similar to the return springs on the brake and
clutch.
Simply drill a small hole through the pedal arm for the other end of the spring.
Good luck!
Regards,
Brian Schlorff '61 TR-4 '64 TR-4 '72 TR-6 '79 Spit
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