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02-08-2012, 03:05 PM
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CC Member
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Join Date: Apr 2010
Location: melbourne,
vic
Cobra Make, Engine: Robnell Blown LS1
Posts: 296
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Not Ranked
No more side pipe burns
Not long finished making these side pipes and it seems I have had reasonable success with them not getting hot enough to burn.
They are made from stainless to the same dimensions as the Robnell pipes.. Internals have a cat at the front with a magnaflow muffler all welded together to form the working part of the pipe. The machined ends are added, slip over a 5" sleeve with Kevlar in between to stop the transfer of heat and there you have it.
Seems to work well. I can hold my hand on the pipe whilst driving and when stopped it's no problem but does heat soak after a while due to the heat retension of the stainless but not enough to burn, only gives you a scare.
Last edited by kyleb; 02-09-2012 at 02:55 PM..
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02-08-2012, 06:42 PM
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CC Member
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Join Date: Nov 2009
Location: Cheltenham,
Vic
Cobra Make, Engine: Classic Revival CR3516, LS3, Aussie Mike'd T-56, 3.70 LSD, AP brakes, Penske shocks
Posts: 1,616
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Not Ranked
good work, they look nice
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BUILD-BLOG: http://cobrablog.holnet.net
Ben in AU
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02-09-2012, 04:29 AM
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CC Member
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Join Date: Nov 2004
Location: Sydney,
NSW
Cobra Make, Engine: Classic Revival #3199. 366ci L76, T56 6 speed, Blue circle custom paint, Australias most original cobra 2009-2010
Posts: 2,396
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Not Ranked
Great looking pipes and a beautiful car. Good job.
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Proudly registered since 2013.
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02-11-2012, 01:57 PM
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CC Member
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Join Date: Jun 2006
Location: Palm Beach,
QLD
Cobra Make, Engine: Harrisons # 62 302 T5
Posts: 474
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Not Ranked
kyleb
Great job on the pipes. The look the part and to be able to keep them cool is fantastic. What do you reckon the noise level would be? With the recent suggestions that live pipes can be used, you could be onto a winner here.
Geof
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Original? Must be. It's the only one I've ever built.
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02-11-2012, 03:41 PM
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CC Member
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Join Date: Oct 2011
Location: Melbourne,
Vic
Cobra Make, Engine: Superformance MK111 Ford 5.0 Cammer N/A
Posts: 183
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Not Ranked
Looks tuff well done as Geof asked do you have noise level readings.
LJ
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02-11-2012, 10:33 PM
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CC Member
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Join Date: Apr 2010
Location: melbourne,
vic
Cobra Make, Engine: Robnell Blown LS1
Posts: 296
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Not Ranked
Thanks guys
Noise levels are quite good until you really step into it then it barks.
I will grab the sound meter this week and get an idea of what the actual figure is..
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02-02-2013, 08:19 PM
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CC Member
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Join Date: Jan 2013
Cobra Make, Engine: SPF 2607 Roush 427IR 8-stack EFI
Posts: 69
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Not Ranked
Nice work
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02-03-2013, 04:05 AM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Not Ranked
Beautiful work Kyle. Keep us posted.
Cheers
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Mike Murphy
Melbourne Australia
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02-03-2013, 05:51 AM
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CC Member
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Join Date: Apr 2010
Location: melbourne,
vic
Cobra Make, Engine: Robnell Blown LS1
Posts: 296
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Not Ranked
Thanks Mike, I had forgotten all about this.
I have since added a blower and cam etc so I should test it again, but prior to doing all this I grabbed a sound meter and was getting around 100db at 4000rpm.
I think it's a good result with the limited pipe length that you have to work with..
If I was to do it again I probably wouldn't use stainless for the internals therefore you would possibly get even less heat transfer whilst stationary..
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02-03-2013, 05:58 AM
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CC Member
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Join Date: Apr 2010
Location: melbourne,
vic
Cobra Make, Engine: Robnell Blown LS1
Posts: 296
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Not Ranked
I meant to add..
To get it to 87db (new vehicle standard) I reckon would be near impossible.
But with some supertrapp internals as well I reckon you could get to a point where the authorities here would not be too concerned..
Thoughts!!!!
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