Thanks TeriAnn, for a very imformed reply. Even though I will run a Spitfire
w/ dual Weber DCOE40s, there's something to be learned from every discussion
thread!
Steven Groh
ex-Manning Spitfire
-------------- Original message --------------
From: TeriAnn Wakeman <twakeman@razzolink.com>
> I'm a fan of itg air filters. They are a triple layer foam filter
> designed for high flow with minimal air disruption. They are the best
> filter I have found for a minimal space in front of the air horn
> application. There is probably an of the shelf back plate to fit a GT6
> running SUs. The air horn fits inside the filter and the back plate
> mounts between the carb and horn base.
>
>
> My TR3 with dual DCOEs on TWM manifolds is running a JC52/25 filter on a
> 28-JC-50 back plate and the shortest horns TWM makes to fit the small
> space between the leading venturi and inner wing panel. A TR6 running
> DCOEs on a TWM manifold would take a JC100 series filter with a
> 36-JC-100 backplate. I mention them because TR info for itg & TWM
> manifolds have been dropped from catalogues these days. Oh and a
> '62-'65 Spitfire running dual SUs take a JC /40/40 on a 4-JC-40 back
> plate. Sorry none of these fits your car but they didn't list a
> backplate size for a GT6 with twin SUs.
>
> Scott Janzen wrote:
> > My GT6, running twin SUs, has this very nice pair of aluminum air
> > horns/stacks. I've been running them open, but am concerned about the
> > amount of grit in a typical track environment. They end about 1" off
> > the inside fender, so there is no room for an air box or traditional
> > filters. Anyone aware of a product (foam/fabric) designed to fit over
> > these, or should I just run cheesecloth with a ziptie?
>
> That may keep large debris off the track from bending your SU needle but
> it will not be kind to your cylinder walls. Tying something around the
> outside edge of your air horn is going to disrupt the air flow. A rigid
> frame sock that fits at the base of the horn and has enough space to
> allow air to flow unimpeded around the edge of the horn is much better.
>
> TeriAnn
>
>
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