Hi all,
after realising that meeting package constraints and noise requirements for a GT40 will be a challenge, I’ve been researching what would be a feasible solution.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
, I’ve got access to some very knowledgeable people and pretty powerful software. This result of this is that I’ve designed a silencer specific for a 302 V8 in a GT40 package envelope and a <?xml:namespace prefix = st1 ns =)
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lace w:st="on">UK</st1lace> silencer company to manufacture them.<o></o>
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The basic design of the silencer is a reactive design (a series of inter-linked chambers & tuned length connecting pipes), as opposed to the more conventional absorption design (perforated pipe & absorbent material). There is some absorption material in the design, to dampen the radiated noise from the casing and take out the high frequency elements of the generated noise. All internal pipes are bell-mouthed to improve the high speed gas flow. The design will also work for other V8 engines (351’s, Rover/Buick etc), although not as a fully optimised design.<o></o>
<o></o>
Whilst I’m making no guarantees about the performance, either acoustically or back pressure, I will be fitting them to my car. When checked using the Lotus engine simulation software & a model of a 302 V8 (based my specific engine spec) there was no difference in engine performance between the proposed design & a single chamber expander silencer. <o></o>
<o></o>
If anyone is interested in a pair of these silencers (see attached file for construction & package dimensions), let me know and I can put together a batch order. These will have an all stainless steel construction with a polished outer case and should be around £250/pair, depending on the volume ordered. Sorry but due to shipping hassles I will only be supplying these to the UK & Europe.<o></o>
<o></o>
Regards<o></o>
Andy<o></o>
after realising that meeting package constraints and noise requirements for a GT40 will be a challenge, I’ve been researching what would be a feasible solution.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
lace w:st="on">UK</st1lace> silencer company to manufacture them.<o></o><o
></o>The basic design of the silencer is a reactive design (a series of inter-linked chambers & tuned length connecting pipes), as opposed to the more conventional absorption design (perforated pipe & absorbent material). There is some absorption material in the design, to dampen the radiated noise from the casing and take out the high frequency elements of the generated noise. All internal pipes are bell-mouthed to improve the high speed gas flow. The design will also work for other V8 engines (351’s, Rover/Buick etc), although not as a fully optimised design.<o
></o><o
></o>Whilst I’m making no guarantees about the performance, either acoustically or back pressure, I will be fitting them to my car. When checked using the Lotus engine simulation software & a model of a 302 V8 (based my specific engine spec) there was no difference in engine performance between the proposed design & a single chamber expander silencer. <o
></o><o
></o>If anyone is interested in a pair of these silencers (see attached file for construction & package dimensions), let me know and I can put together a batch order. These will have an all stainless steel construction with a polished outer case and should be around £250/pair, depending on the volume ordered. Sorry but due to shipping hassles I will only be supplying these to the UK & Europe.<o
></o><o
></o>Regards<o
></o>Andy<o
></o>
