C5 Z06 180 degree header build thread
04-15-2017, 02:24 PM
#161
Drifting
I love how you made spaghetti slide in without issue but some of the big name headers struggled with multiple versions sold until they could get them to slip right in and they didn't have near the challenge.
04-15-2017, 03:15 PM
#162
Team Owner
Man, that's "pure exhaust ****"..............
04-17-2017, 10:22 AM
#163
Race Director
Member Since: Apr 2007
Location: South Western Ontario
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It's beautiful, but I too don't get what the X-pipe gains or loses. The idea behind 180* headers or even firing is that each tail pipe has 4 equally times pulses with the pulses from one pipe timed between the pulses from the other pipe. That way, you get a constant back and forth pulsing between the tail pipes.
If the 2 pipes are fully mixed then the exhaust pulses that you'd get would be the same thing as with any headers. The 8 exhaust pulses from a LS1 are already equally timed when combined together without any special crossover header design. This combining of pulses is the main reason why a X-pipe really changes the sound of most V8's compared to separate duals or even a crossover pipe.
Still, I believe the Mustang Voodoo engine (which by crank design is even firing without crossover headers) got a X-pipe so there's likely something to the X-pipe that still allows the even firing sound to come through. It might damp it though compared to true split duals.
I'd be curious of the sound differences you find with different mid-pipe designs. Maybe try a X-pipe with a small opening between sides too?
If the 2 pipes are fully mixed then the exhaust pulses that you'd get would be the same thing as with any headers. The 8 exhaust pulses from a LS1 are already equally timed when combined together without any special crossover header design. This combining of pulses is the main reason why a X-pipe really changes the sound of most V8's compared to separate duals or even a crossover pipe.
Still, I believe the Mustang Voodoo engine (which by crank design is even firing without crossover headers) got a X-pipe so there's likely something to the X-pipe that still allows the even firing sound to come through. It might damp it though compared to true split duals.
I'd be curious of the sound differences you find with different mid-pipe designs. Maybe try a X-pipe with a small opening between sides too?
Last edited by lionelhutz; 04-17-2017 at 10:24 AM.
04-17-2017, 05:05 PM
#164
Instructor
Thread Starter
It's beautiful, but I too don't get what the X-pipe gains or loses. The idea behind 180* headers or even firing is that each tail pipe has 4 equally times pulses with the pulses from one pipe timed between the pulses from the other pipe. That way, you get a constant back and forth pulsing between the tail pipes.
If the 2 pipes are fully mixed then the exhaust pulses that you'd get would be the same thing as with any headers. The 8 exhaust pulses from a LS1 are already equally timed when combined together without any special crossover header design. This combining of pulses is the main reason why a X-pipe really changes the sound of most V8's compared to separate duals or even a crossover pipe.
Still, I believe the Mustang Voodoo engine (which by crank design is even firing without crossover headers) got a X-pipe so there's likely something to the X-pipe that still allows the even firing sound to come through. It might damp it though compared to true split duals.
I'd be curious of the sound differences you find with different mid-pipe designs. Maybe try a X-pipe with a small opening between sides too?
If the 2 pipes are fully mixed then the exhaust pulses that you'd get would be the same thing as with any headers. The 8 exhaust pulses from a LS1 are already equally timed when combined together without any special crossover header design. This combining of pulses is the main reason why a X-pipe really changes the sound of most V8's compared to separate duals or even a crossover pipe.
Still, I believe the Mustang Voodoo engine (which by crank design is even firing without crossover headers) got a X-pipe so there's likely something to the X-pipe that still allows the even firing sound to come through. It might damp it though compared to true split duals.
I'd be curious of the sound differences you find with different mid-pipe designs. Maybe try a X-pipe with a small opening between sides too?
My basis for the addition of an x-pipe is the difference they made on two other exhausts I've built. Both were even firing 6 cylinders, the first, a friend's 911 GT3. Before the exhaust I built for him, for track duty he would bypass the mufflers with two elbows clamped to the factory exhaust right after the cats, sounded more like a UPS truck than a sports car. The exhaust I built for him utilized an X-pipe and now it is quite musical. The second, my V6 powered RX7. I swapped in one of the worst sounding engines of all time, a 3800 series two GM V6. After adding an X-pipe to it's exhaust it went from a horrible monotone blah to actually sounding very pleasant. If an X-pipe can transform the sound of those two even firing 6 cylinders, I'm guessing 1.333 times the magic to happen after this set of 180 degree headers.
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Ramo7769 (11-23-2023)
04-17-2017, 08:30 PM
#165
Instructor
Thread Starter
And here are the results.
Bone stock LS6 with factory ti axle back.
More sound clips to come.
Bone stock LS6 with factory ti axle back.
More sound clips to come.
Last edited by Tinmatt; 04-17-2017 at 08:31 PM.
The following 13 users liked this post by Tinmatt:
bigsapper (07-28-2019),
Black 03 Z06 (04-18-2017),
blackmachdown (07-15-2017),
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and 8 others liked this post.
04-18-2017, 01:14 AM
#171
04-18-2017, 07:15 AM
#172
Team Owner
04-18-2017, 07:29 AM
#173
Marvellous, simply marvellous.
Could you leave the car lifted up and some hand tools beside the car and then head off for a "sound" sleep?
Last edited by Black 03 Z06; 04-18-2017 at 07:47 AM.
04-18-2017, 05:31 PM
#175
Instructor
Thread Starter
Thanks everyone 
I'll try to get some in car and roadside videos up soon. And as I can't leave well enough alone, I'm going to start experimenting with the other mid pipe section ideas I have after I get caught up on other projects. To do the experimenting more efficiently, I'm looking for some factory H-pipes to speed things up. If anyone has one laying around that they are willing to part with for a reasonable cost, please let me know. I only need from just before the H to the flanges.
I'll try to get some in car and roadside videos up soon. And as I can't leave well enough alone, I'm going to start experimenting with the other mid pipe section ideas I have after I get caught up on other projects. To do the experimenting more efficiently, I'm looking for some factory H-pipes to speed things up. If anyone has one laying around that they are willing to part with for a reasonable cost, please let me know. I only need from just before the H to the flanges.
04-18-2017, 06:39 PM
#176
Safety Car
If I heard that going down the road, I wouldn't be able to tell what car it is. It definitely sounds like it belongs on a race track. I would like to hear it under a load accelerating down the road.
It looks like all that hard work paid off. The H pipe sound would be interesting to hear too.
It looks like all that hard work paid off. The H pipe sound would be interesting to hear too.
04-19-2017, 12:05 AM
#177
Le Mans Master
I'd like to hear that on a long acceleration winding out through the gears. I'm guessing it is going to sound very sweet with an Italian accent.
04-19-2017, 01:56 AM
#179
badass work man, really thankful for sharing your work man
as for the sound clip, please remove that piece of **** TI catback hahaha
straight pipe that bitch, i bet its going to sound much much nicer
as for the sound clip, please remove that piece of **** TI catback hahaha
straight pipe that bitch, i bet its going to sound much much nicer
