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  #16  
Old 10-28-2007, 07:17 PM
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Dessertrunner Dessertrunner is offline
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Location: Griffith NSW
Posts: 2,156
I have been working on a new design for the exhaust which has a venture in the pipe to help pump the exhauat gas along. The main purpose of the design is to transfer the noise waves further up the pipe to balance the harmonic and thus get the quieting the noise with out using a muffler of any type. Will keep you posted on how we go.
Tony
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1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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  #17  
Old 10-29-2007, 05:08 AM
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Dessertrunner Dessertrunner is offline
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Location: Griffith NSW
Posts: 2,156
Okay here is the design for my idea on a new exhaust it works on the principle of vacum simlar to extrators. If the exhaust pulses can be adjusted to balance the harmonics it should quiten down. You can tune the noise by extending the vacum pipes. So guys here it is.
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File Type: jpg Exhaust Plan.JPG (29.3 KB, 205 views)
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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  #18  
Old 10-29-2007, 05:13 AM
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svxual svxual is offline
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Location: christchurch,New Zealand
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ok so what size is the main pipe and the vacum pipes??
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  #19  
Old 10-29-2007, 05:43 AM
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Dessertrunner Dessertrunner is offline
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Join Date: Jul 2005
Location: Griffith NSW
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The mian pipe would need to be the same size you use now, 60mm for the NA and larger for the SC. The side pipes would be around 25mm to 30mm 1in to 1.25 As they are only used to upset the wave form (sound wave) in the main pipe.
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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  #20  
Old 10-29-2007, 05:55 AM
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svxual svxual is offline
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Join Date: Oct 2007
Location: christchurch,New Zealand
Posts: 170
so when are you planning on building this ?? and getting the results posted. not going to be easy getting those two / \ inside the main pipe will it ??.. and if this works will it work without cats ?
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  #21  
Old 10-29-2007, 06:07 AM
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Dessertrunner Dessertrunner is offline
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Join Date: Jul 2005
Location: Griffith NSW
Posts: 2,156
In Australia we can run with out Cats because no one tests the cars. So then its just down to noise. I am going to the dessert for a week so maybe when I get back.
__________________
1995 - SVX 700,000 K Mine, DMS Struts to lift car 2in. Tyres Wrangler Silent Armor 235/70R16, PBR Radiator. 6 speed with DCCD and R180 rer diff, Heavy duty top strut mounts front and rear. Speedo correction box fitted. New stero (gave up on the old one). Back seat removed and 2 spare tyres fitted for desert driving. ECUTune SC sitting in the box for the next SVX.
1992 - SVX 255 K Wife (Want to stay Married so not allowed to fit SC)
1992 - SVX Pearl with black roof race car roll cauge etc ready to race. Ex Tasman Targa car.
1995 - SVX Green low k mint condiation.
1995 - SVX Rally car, ex Matts car. Now to be used on track.
1992 - SVX red & Black being converted to Mid Engine.
1995 - SVX Red 143,000 bit rough.
Owned 5 others Subaru back to a 1974 1400 GSR.
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  #22  
Old 10-29-2007, 06:14 AM
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svxual svxual is offline
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Join Date: Oct 2007
Location: christchurch,New Zealand
Posts: 170
yep same here over the ditch.... but they trying to pass a law here in chch to ban noisey cars between 11pm and 7am the same as our anti toot your horn law but i have to admit it is a bit crazy in town on wkend nights etc with all the boy-racers out n about but on the whole i dont see much difference between a noisey exhaust and a noisey truck rumbling through town
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