| General Anything not relating to one of the following Holden Commodore categories |
09-04-2007, 01:42 PM
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Banned
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Ride: 1992 VQ SII STATESMAN
Join Date: Jul 2004
Location: S/E Subs, Melb
Posts: 3,157
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Dump exhaust at diff??
Is it illegal to dump the exhaust at the diff??
I thought the law was, the exhaust must exit past the rear most opening window... Meaning dumping at diff = legal?
My exhaust rubber broke & dropped my exhaust on my diff and crimped it down to under 1" and its crackling real bad an running real ****.. I cant afford a new exhaust.....
Cheers
MaT
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09-04-2007, 02:04 PM
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Projecting
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Ride: VL PROJECT
Join Date: Jan 2004
Location: QLD
Posts: 3,396
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Yeah as far as I knew it had to be over the diff, but I don't know by how far.
You wouldn't be paying for a new exhaust if you took that in though, they'd be able to do something for you. Do you have a muffler at the rear that youd be losing if you chop it anyway?
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09-04-2007, 02:10 PM
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Banned
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Ride: 1992 VQ SII STATESMAN
Join Date: Jul 2004
Location: S/E Subs, Melb
Posts: 3,157
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Nah no rear muffler...
Cheers
MaT
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09-04-2007, 02:12 PM
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Ride: HSV VE Maloo R8 LS3 6.2L
Join Date: Feb 2005
Location: Perth
Posts: 1,752
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I know on utes its legal, not sure on sedans because as far as im aware it had to pass the rear bumper to prevent exhaust gases entering in the boot.
Thats what ive heard anyway.
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Some people say less talk more action, i say more torque less traction.
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09-04-2007, 02:20 PM
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crappy ol' VN driver
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Ride: VN3.8 5spd/VSII3.8/VH5.0
Join Date: Apr 2006
Location: Auckland NZ
Posts: 4,001
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i'm sure greenfoam looked into this a while ago and the conclusion was that it had to exit after the boot cause there are vents in the side of the boot which could possibly allow fumes into the passenger cabin etc. i'm putting slip joints on the V8 after the flowmaster mufflers so on track days i can drop the exhaust after the mufflers befor the diff etc. might just leave em off and only fit em for the WOF but i'm sure thats not legal here either but it's only goingto be a toy car so it's not going to be driven every dya anyways
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Body by Holden, Soul by Brock the Legend will live forever
VN exec T5: 15.1sec @92.2mph 1/4 mile, 9.7sec @ 74.6mph 1/8mile, 2.3sec 60ft, 0-60mph 6.827sec 22/11/07 Gtech competition
quote of the week
Quote:
Originally Posted by VT-565
why don't you want to go forshed induckshun?
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09-04-2007, 02:27 PM
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[YNI-NV6]
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Ride: WRECKING VN Berlina
Join Date: Jun 2005
Location: Canbraaahh
Posts: 416
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i think it has to be around 400mm/40cm pass the nearest door... goes something like that anyway
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09-04-2007, 02:30 PM
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Ride: VS Berlina (Soon to be an L67)
Join Date: Oct 2006
Location: Phillip Island, VIC
Posts: 347
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Quote:
Originally Posted by 91_Berlina
i think it has to be around 400mm/40cm pass the nearest door... goes something like that anyway
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Yeah i remember reading that somewhere
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09-04-2007, 02:30 PM
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Ride: 91 VN SS 355
Join Date: Feb 2005
Location: WEST SUBS
Posts: 2,609
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Any thing non standard is a defect,Dumped at the diff wouldn't be legal in my view i would contact Transport s.a or the such in your state and ask them.
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Cheers. 
* RVN 355 *  RVN 355 ALPINE VN SS 355 CUBIC INCH V8 WITH BILLET / CHROME UPGRADES
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09-04-2007, 03:35 PM
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Projecting
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Ride: VL PROJECT
Join Date: Jan 2004
Location: QLD
Posts: 3,396
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the 40cm sounds familiar to me also, just call vic roads and see what they say.
i think the term is that it has to be x mm away from the last passenger compartment or something like that.
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09-04-2007, 03:37 PM
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Projecting
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Ride: VL PROJECT
Join Date: Jan 2004
Location: QLD
Posts: 3,396
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10-04-2007, 12:19 PM
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Resident science geek
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Ride: VQ Statesman 5.0L
Join Date: Oct 2005
Location: Adelaide
Posts: 200
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As long as you exhaust comes out behind the rear most opening window, it's not too loud, it clears the tyres by at least 30mm and you don't remove a catalytic converter, it should be legal.
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I'd rather push my Holden than drive a Ford
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10-04-2007, 12:52 PM
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Tells it like it is.
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Ride: VE SS-V, VP SS
Join Date: Aug 2004
Location: SE Suburbs, Melbourne
Posts: 1,772
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Quote:
Originally Posted by HoZy
Is it illegal to dump the exhaust at the diff??
I thought the law was, the exhaust must exit past the rear most opening window... Meaning dumping at diff = legal?
My exhaust rubber broke & dropped my exhaust on my diff and crimped it down to under 1" and its crackling real bad an running real ****.. I cant afford a new exhaust.....
Cheers
MaT
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Check out the pdf linked by Bax. The short answer is nope. There are 2 reasons - You will be deleting 1 muffler which will mean your car is probably too loud plus the exhaust gasses could fill the boot area and in turn circulate into the passenger compartment giving you a nice sleepy feeling.
Reaper
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10-04-2007, 01:06 PM
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Tells it like it is.
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Ride: VE SS-V, VP SS
Join Date: Aug 2004
Location: SE Suburbs, Melbourne
Posts: 1,772
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Quote:
Originally Posted by vq~gangsta
As long as you exhaust comes out behind the rear most opening window, .
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Nope. The vehicle standards pdf says no such thing. When are you guys going to research your posts before you hand out half arsed advise? It says that the outlet must be 40mm behind the rear most joint in the floor pan that is not continuously welded or permanently sealed. In the VN there are some vents in the boot which are not sealed and thus does not satisfy the "permanently sealed" requirement.
Reaper
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