George Lendich wrote:

Paul,
I don't know if Tracy or anyone would like to try this muffler, but I
travelled down to Indy on the Gold Coast
last week and visited a chap at Southport Gold Coast who makes a new
muffler - some mild steel some Stainless.

Apparantly these are bing used by members in the local racing groups and
seem pleased with the product.

A Scandinavian importer sells them in Europe and Sth Africa but no export to
the US as yet !
The Scandinavian imports stainless only has had them trialled in the racing
game where it is claimed they last two seasons on the RX7.

The claim is that because it has a turbo action( creates a vacuum) it saves
on fuel improves HP and torque
(a nice side benefit if true)
The Turbo configeration is unique,  there are no moving parts, it's
construction is as follows:-

Inner tube 4" of  stamped perforated tube (300mm long 1.2mm thick)  - filled
with very tighly packed fibreglass. The ends of this tube are sealed with a
half dome end plate 1.2 to 1.6mm thick.
A1/2" tube runs the length of the tube in a spiral. This creates the turbo
action between the inner and outer tube.

The outer tube is therefore 5" and is 300mm (12") long and has cone ends to
match pipe sizes of 2", 2.25". 2.5", 3".

Different sizes vary in lenght only - 17.5", 19.5"&  22" (body length,
including cone ends). Add 40mm each end for pipe fitting for overall length.

Pretty simple design and is claimed to be better and quiter than the
straight through exhaust systems.

One additional design feature is an expansion chamber, which is merely a gap
of 2" between the front hand back half of the packing. This provided for a
quieter muffler at expense of a small cost in HP -1 Hp is quoted.

I do have a dyno graph, is anyone is interested, which shows an improvement
of 5 to10 hp to 6,500 rpm and as the hp drops off from 6,500 to7,500 rpm it
is significantly less tha the Lukey muffler it is compared to.

Weight of the Muffler is approx 3.5 kilo for the 300mm body length muffler.

The SS used is 304 for the outer tube and 3CR-12 for the spun parts - cones
and half domes.

The domes can be supplied in 1.2mm or 1.6mm for the SS version - all mild
steel domes are 1.6 standard.

Price is approx $300 Aust ($150 US) for the mild steel and $400 Aust ($200
US) for the SS version.

If anyone wants to try one let me know and I will arrange for it to be
shipped over, but I will need to know your choice of configeration.

Any comments will also be welcome.

George (down under)

 
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