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CC Advertisers
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03-21-2004, 05:25 PM
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CC Member
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Join Date: Aug 2003
Location: Hunter valley wine country,
NSW
Cobra Make, Engine: Homebush. Lexus quad cam V8, R154 Supra box. Oh what a feeling.
Posts: 363
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Not Ranked
Side Pipe diameter
I am soon to start building my sidepipes. What diameter pipe is used for the main body of the pipes? 3 inch looks too thin and 4 inch looks to thick. Any info appreciated.
Brett
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 !!Its good to be stroked but i'd rather be blown!!
Proud member of the Bclub Central Coast chapter
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03-21-2004, 05:38 PM
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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
Mine are are pretty chunky looking and use 3.5" collectors and tip with a 4.5" body (There are pics in my gallery). I think most are a 3" collector and tip with a 3.5" or 4" body.
Cheers
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Mike Murphy
Melbourne Australia
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03-21-2004, 06:42 PM
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CC Member
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Join Date: Aug 2003
Location: Hunter valley wine country,
NSW
Cobra Make, Engine: Homebush. Lexus quad cam V8, R154 Supra box. Oh what a feeling.
Posts: 363
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Not Ranked
Any ideas as to what diameter the pipes are on the attached photo.
http://www.clubcobra.com/photopost/s...sort=1&cat=500
__________________
!!Its good to be stroked but i'd rather be blown!!
Proud member of the Bclub Central Coast chapter
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03-21-2004, 07:48 PM
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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
My guess would be a 3" pipe
Cheers
__________________
Mike Murphy
Melbourne Australia
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03-22-2004, 04:56 AM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
I will be useing a larger diameter pipe as my personal preferance is it looks beter, also i prefer the 4 into 1 connector being visable on the outside.
__________________
Cruising in 5th
---------------------------------------------
Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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03-22-2004, 06:36 PM
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CC Member
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Join Date: Oct 2002
Location: Sydney,
NSW
Cobra Make, Engine: Classic Revival. 6 litre Chev
Posts: 669
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Not Ranked
Brett,
I am making my side pipes at the moment. They will be 4.5"OD with 2.5" perf pipe inside with 3" collector and exit.
These are copy of Mikes. Thanks Mike.
I think you will need this OD if you stand any chance of getting noise down to acceptable limits.
I should have them completed in about a week if you want to view them.
Regards,
Phil
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03-22-2004, 06:44 PM
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CC Member
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Join Date: Nov 2002
Location: Flanders,
NJ
Cobra Make, Engine: Classic Roadsters 351 Windsor 405 HP
Posts: 1,043
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Mike are 4" with 4 into 1 collector showing. See my Gallery.
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03-23-2004, 01:14 AM
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CC Member
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Join Date: Jun 2003
Location: Australia,
Zzz
Cobra Make, Engine: Shelby alum 468 block
Posts: 14,974
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Hi all
What are you using to pack the pipes.
Mike are you using the stainless donut type bands or something different - fibreglass, steel wool, stainless steel packing.
How tight are you guys packing the pipes.
Are you packing tightly.
Cheers
Bernie
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Bernie Knight
KMS 427 #662 Shelby 468 CSX 1026
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03-23-2004, 04:22 PM
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CC Member
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Join Date: Oct 2002
Location: Sydney,
NSW
Cobra Make, Engine: Classic Revival. 6 litre Chev
Posts: 669
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Bernie,
I got the packing from difillipo in Melbourne. Its in a blanket form and Darren has recommended that I wrap the peforated tube tightly . I also intend to wrap the packing with thermal blanket with shiny side in to hopefully prevent "snake bite" from hot exhaust.
Regards,
Phil
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03-24-2004, 02:24 AM
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CC Member
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Join Date: Mar 2001
Location: Central Coast Sydney, Australia,
NS
Cobra Make, Engine: Classic Revival, Gen3 ls1, Vortech T-Trim, Motec, tremec M12, wilwood brakes.
Posts: 319
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Hi guys
You can always just go natural like me and have no packing and just perferated pipe and man is it loud.
to give you an example these are some of the things that has happend in the last 2 months. Set car alarm off in parked car as I went by, man mowing lawn heres me coming over lawn mower and looks up in the sky for a plane or somthing and just the other week driving down suburban road 60kph and old man walking towards me stops and puts both hands over his ears till pass all I can say is the look you get from people as you go pass them at full noise is priceless.
Craig W 
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Craig W
Central Coast NSW
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03-24-2004, 12:37 PM
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CC Member
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Join Date: Oct 2002
Location: Sydney,
NSW
Cobra Make, Engine: Classic Revival. 6 litre Chev
Posts: 669
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Not Ranked
Craig,
Ian at CR has same problem setting off alarms. His best trick however is opening Hondas. Must be driving the Honda service guys crazy.
Hows your CR going , are you happy with the way it handles. You really got 400kw in yours? must be unreal .
Regards,
Phil
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03-24-2004, 12:52 PM
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CC Member
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Join Date: Nov 2002
Location: Flanders,
NJ
Cobra Make, Engine: Classic Roadsters 351 Windsor 405 HP
Posts: 1,043
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Not Ranked
Packing what's packing. I can't rev it up in the garage without
knocking pictres off the wall in the next room!!LOL
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03-24-2004, 01:39 PM
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CC Member
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Join Date: Jan 2003
Location: Greater Kansas City Area,
KS
Cobra Make, Engine: Don't own a Cobra. But love them so much, am Chief Operating Office of a company that builds them.
Posts: 115
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Not Ranked
4" OD for big blocks. 3" OD for small blocks. Thats what we use, and its the sound tht gest into your soul when they're tuned.
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All the best to you across the miles....
Bob Lockett, Chief Operating Officer
PREMIER MotorSports, LLC
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