Outer Limits 4x4 Board

does anyone have or can find me pics of v8 supercar exhaust and extractors

they keep them a bit of a secret

does this help

I wonder how that plastic exahust would go with the heat after a round of eastern creek

look up the pics of brad jones or craig lowndes rollovers....
A mate builds V8 supercars and parts, but wouldn't let me in the building with a camera

CRUSHU wrote:look up the pics of brad jones or craig lowndes rollovers....
A mate builds V8 supercars and parts, but wouldn't let me in the building with a camera

Not much of a fukin mate then is he?

I remember when lowndes rolled the HRT car and every single exhaust shop got a glimpse of the "X" pipe. Its now opened up a whole new era of V8/V6 exhaust tech with opening lengths, area, how far to place it from the engine etc etc.

But lets face it, they are V8's after all and the hillbillys that race nascar have been using it for the last 20 or so years.

As the exhaust fix guy said, they keep them very secretive. I have seen them, and they truly look like works of art. I don't know who builds them, but it isn't anyone from an exhaust shop I've ever seen!!
But he would smash my camera if I pulled it out![/i]

X pipes have been used in Nascar for years, known as a "Doctor Gas" pipe. They are used when the exhausts are of the 4 into 1 type not tri Y's, to balance pulses, and help with torque. Chevs are more respnsive to this than Holden engines, hence why V8 Supercars (Chevs), Nascar, and road going Gen 3's use em.(Aftermarket)

When I saw the Wynn's racing one up close (back in '99), they were 3" diameter, and converged about 30 deg from the cars centreline. Some sysytems use a x over type, and others have both pipes meet into a common chamber about 18 inches long and then diverge again. Not that hard to make, just gotta have the fabrication equipment, and I prefer a TIG welder for a neater finish, even if its only mild steel....

Look up Gonzos pipes in Brisbane. He has built them for all types of motor sport including supercars and top fuel dargsters etc.

Check out the Street Machine issue with the 1950 Mercury Coupe on the front.

It has a pic of Brad Jones on his side neatly parking up against the Fraud sign. With a nice view of his zorst pipe.

I know that HRT use "Burns Stainless" merge collectors from the USA but I'm unsure of the header assemblies.
Regards Andrew.

These are old pics. Circa 2001 ?

bigpat wrote:
Chevs are more respnsive to this than Holden engines, hence why V8 Supercars (Chevs), Nascar, and road going Gen 3's use em.(Aftermarket)

technically gen 3's are not chevs and have a completely diferent firing order to reduce pulses and reduce the load on the crank. plenty of people use them (x's) , i do not know to what level of benefit on an ls1.

cheers bru

bru21 wrote: technically gen 3's are not chevs and have a completely diferent firing order to reduce pulses and reduce the load on the crank.

cheers bru

Correct, and they even have a different capacity (346ci) and different bore and stroke, and different bore spacing.
In fact, there is nothing interchangeable between a 5.7 Chev and a 5.7 LS1.

bru21 wrote:technically gen 3's are not chevs
cheers bru

I think you could have spent more time wording this bru

pongo wrote:These are old pics. Circa 2001 ?

nice pics thank you

and an x pipe is there to help keep low down torque and reduce noise without power loss

Being fairly familiar with that car ( worked for fuchs who sponsor) and seen it running many times i can tell you that it was down a bit on power from the leaders of the day, but was extreemly quiet - there was more noise from the straight cut gears in the holinger than the exhaust. Many road cars are heaps louder.

A workmate was at tasman (landvale) motorsport in melb when they moved down here to be with ron harrop, he tells me thay have gone to a more standard single side system with twin outlets. 4into1 X pipe 2in2out muffler twin outlets.

The loudest cars around used to be the 888 units which had the 3 outlets, this was only done to "package" the exhaust flatter to the car and just teed off the 2 main pipes for the 3rd.

bradley wrote: A workmate was at tasman (landvale) motorsport in melb when they moved down here to be with ron harrop, he tells me thay have gone to a more standard single side system with twin outlets. 4into1 X pipe 2in2out muffler twin outlets.

Yep most of the ones I've been around recently (that I remember looking at) have had large (5"?) single exhausts, with multiple outlets to aid ground clearance. You can see a fair bit of the exhausts when they're working on the cars before practice sessions etc - seems to be common practice to pull the exhausts off and leave them near the back of the pits - ie. the public viewing area. Obviously they don't pull the headers off for display...

bradley wrote:Being fairly familiar with that car ( worked for fuchs who sponsor) and seen it running many times i can tell you that it was down a bit on power from the leaders of the day, but was extreemly quiet - there was more noise from the straight cut gears in the holinger than the exhaust. Many road cars are heaps louder.

A workmate was at tasman (landvale) motorsport in melb when they moved down here to be with ron harrop, he tells me thay have gone to a more standard single side system with twin outlets. 4into1 X pipe 2in2out muffler twin outlets.

The loudest cars around used to be the 888 units which had the 3 outlets, this was only done to "package" the exhaust flatter to the car and just teed off the 2 main pipes for the 3rd.

THANK YOU
thats exactly what i had in mind

CRUSHU wrote:As the exhaust fix guy said, they keep them very secretive. I have seen them, and they truly look like works of art. I don't know who builds them, but it isn't anyone from an exhaust shop I've ever seen!!
But he would smash my camera if I pulled it out![/i]

I know who builds some of them. The different teams use different suppliers but a lot use my mates father in law, Graham Facey. Graham has been building performance exhaust for racing cars (and exotic road cars as well) for many years and he currently makes them for HRT, DJR and a half dozen other teams. His work is of the absolute highest quality.

Crushu is right .. they keep the specs very secret. I recall when Lowndes rolled the HRT car at Calder, Graham was inundated with calls from the other teams wanting replica systems made up because they had scaled up the pictures of the upside down car to get all the measurements of the HRT system. At that time Dave (my mate) was working for Graham making the mufflers which are a work of art in themselves. It takes nearly 2 weeks to build a complete system from the headers back for one of those cars and it costs plenty of $$$$.