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04-10-2011, 11:30 PM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Emissions test tomorrow
I'm off for my emissions test tomorrow.
It failed last time by 0.02 parts per million, I reckon that the machine would have an error margin by at least 10ppm, so hopefully all goes well.
It failed previously to that by at least 6 x the required amount due to the sensors not getting the full whack of exhaust so they were trying to put more fuel into the beast based on a 2/4 exhaust port reading.
Anyway, hopefully a nice day for a drive if nothing else.
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04-10-2011, 11:58 PM
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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
Good luck, and hope it goes well.
__________________
Cruising in 5th
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Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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04-11-2011, 12:07 AM
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CC Member
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Join Date: Apr 2008
Location: Melbourne,
Vic
Cobra Make, Engine: Some polish thing... With some old engine
Posts: 2,286
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Not Ranked
x2
Quote:
Originally Posted by boxhead
Good luck, and hope it goes well.
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x2
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04-11-2011, 12:39 AM
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CC Member
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Join Date: Jul 2004
Cobra Make, Engine: 347 Stroker Morrison Injection. Registered.
Posts: 1,440
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Not Ranked
I wish you all the luck in the world!
Regards.
__________________
Mando
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04-11-2011, 12:46 AM
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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
interesting to see it failed, what mods are done to your 6.2L? If its stock as a rock then it should not be failing, where are your cats and o2 sensors positioned?
Good luck anyway!
__________________
BUILD-BLOG: http://cobrablog.holnet.net
Ben in AU
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04-11-2011, 01:01 AM
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CC Member
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Join Date: Jun 2009
Location: Sydney,
NSW
Cobra Make, Engine: RCM, Jag front and rear, LS3
Posts: 1,640
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Not Ranked
Quote:
Originally Posted by Modena
interesting to see it failed, what mods are done to your 6.2L? If its stock as a rock then it should not be failing, where are your cats and o2 sensors positioned?
Good luck anyway!
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Im guessing its not stock if supercharged.
What ECU is it? |
04-11-2011, 01:31 AM
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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
Quote:
Originally Posted by Zedn
Im guessing its not stock if supercharged.
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ah-hah....I missed that bit!
__________________
BUILD-BLOG: http://cobrablog.holnet.net
Ben in AU
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04-11-2011, 02:08 AM
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CC Member
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Join Date: Jun 2009
Location: Sydney,
NSW
Cobra Make, Engine: RCM, Jag front and rear, LS3
Posts: 1,640
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Not Ranked
Quote:
Originally Posted by Modena
ah-hah....I missed that bit!
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Easy to miss, not that common. I was thinking my stock LS3 would be plenty of power. Must be a rocket with the supercharger. |
04-11-2011, 03:40 AM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Quote:
Originally Posted by Modena
interesting to see it failed, what mods are done to your 6.2L? If its stock as a rock then it should not be failing, where are your cats and o2 sensors positioned?
Good luck anyway!
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The exhaust shop that did the extractors put them where they put all the other ones for LS1,2,76,98, .... but for the LS3 they had to be further down the collector pipe, not sure why. Moved them a few inches and they work a treat now.
Cats are where they could fit and are the decent type of ones, not the $50 ones. |
04-11-2011, 03:42 AM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Quote:
Originally Posted by Zedn
Easy to miss, not that common. I was thinking my stock LS3 would be plenty of power. Must be a rocket with the supercharger.
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I'll find out tomorrow am, it goes really well apparently and is stuck to the road like glue. It has the Ford 8.8IRS set up in it running 315 rears. No one has told me actual power at wheels, but way more than 300 with some form of traction control in place. |
04-11-2011, 03:44 AM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Quote:
Originally Posted by Zedn
Im guessing its not stock if supercharged.
What ECU is it?
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Running VY ECO on it with a tune. VE ECU didn't work as there was still some lockout that was in place. Sideshow did the VY ECU and wiring loom. |
04-11-2011, 07:06 AM
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CC Member
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Join Date: Jul 2008
Location: Melbourne,
Vic
Cobra Make, Engine: Harrison, VE L98 + T56
Posts: 164
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Not Ranked
Stock VE Failed.
Quote:
Originally Posted by Modena
interesting to see it failed, what mods are done to your 6.2L? If its stock as a rock then it should not be failing, where are your cats and o2 sensors positioned?
Good luck anyway!
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My stock VE L98 failed running stock VE ECU & sideshow loom with the 4 O2 sensors and new 2.5" Toyota Camry Cats very close to the donk, only missed by a bees appendage but still a fail! I know how T.L. must be feeling, Good luck, 
__________________
Life is what happens to you while you're busy making other plans...JWL
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04-11-2011, 04:32 PM
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CC Member
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Join Date: Feb 2006
Location: The Hills,
NSW
Cobra Make, Engine: Absolute Pace
Posts: 1,354
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Not Ranked
I have been told by many sources that aftermarket cats are hit and miss when it comes to passing emmissions.
Run factory cats and make sure your car is hot, then you should be looking good to pass.
Ben
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04-11-2011, 10:22 PM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Well, it failed again, so its out with the aftermarket cats and I am sourcing some near new VE cats to put into the system.
Hopefully in a weeks time it will be tested again and will pass this time, then onto engineering.........
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04-11-2011, 11:50 PM
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CC Member
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Join Date: Jan 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison, 6.0L Chev
Posts: 2,513
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Not Ranked
TL, sorry to hear the bad news. With the Harrison you may have to go with VZ cats which are triangular and just fit up beside the T56. The VE cats are bigger again and not straight through as they are fitted right below the exhaust collector in the Commodore. They have an elbow at one end which makes it very hard to fit under a Cobra.
Here is the underbody of my car with the VZ cats and skinny exhaust fitted last week by Yarra Valley Exhaust. The cats are now the lowest point on the car.
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04-12-2011, 02:14 AM
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CC Member
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Join Date: Jul 2007
Location: Melbourne,
VIC
Cobra Make, Engine: Harrison build #98 with Supercharged 6.2L of Chev Power, TKO600 5 speed gearbox
Posts: 210
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Not Ranked
Quote:
Originally Posted by sambo
TL, sorry to hear the bad news. With the Harrison you may have to go with VZ cats which are triangular and just fit up beside the T56. The VE cats are bigger again and not straight through as they are fitted right below the exhaust collector in the Commodore. They have an elbow at one end which makes it very hard to fit under a Cobra.
Here is the underbody of my car with the VZ cats and skinny exhaust fitted last week by Yarra Valley Exhaust. The cats are now the lowest point on the car.
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Sambo,
I see were using the same exhaust shop!!!.
I'll see how I go as I have already found some VE ones, and well fit them in somewhere near the top end. I use to work in the exhaust arena a while ago and it comes in handy every now and then. |
04-12-2011, 03:11 AM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Not Ranked
Sorry to hear that TL. The only thing I have on my Harrison are two aftermarket cats up front and a very small muffler each side. But we don't have to do emissions testing for new registrants ... yet.
__________________
Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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04-12-2011, 05:24 AM
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CC Member
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Join Date: Jul 2004
Cobra Make, Engine: 347 Stroker Morrison Injection. Registered.
Posts: 1,440
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Not Ranked
That's the best under car system I've seen. I can't believe I got through with one of the "loner" exhaust systems going around. This is what I turned up with......
Regards.
__________________
Mando
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04-12-2011, 06:34 AM
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CC Member
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Join Date: Apr 2008
Location: Melbourne,
Vic
Cobra Make, Engine: Some polish thing... With some old engine
Posts: 2,286
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Not Ranked
What a bugger!
But I'm sure it's still ok for all those pollies, former & current, to travel the globe by plane on pointless junkets!
I wish you best of luck for next time.
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04-12-2011, 02:40 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
Put some alcohol in it. Alcohol runs emmisions "clean" and can put you over the top. About a quart per 5 gallons.
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__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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