What do you think of this exhaust idea?
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
What do you think of this exhaust idea? I have been thinking about how to reduce weight in the exhaust without deafening myself with turndowns under the axles.
What do you think of the following?
MAC headers with Ypipe and 2.5 bullets in the Y.
Cut off the Y portion of the Ypipe.
Extend dual 2.5 inch tubing underneath the car
Use 2 90 degree mandrel bent 2.5 inch pieces of tubing and exit the exhaust right in front of the rear tires.
If necessary for ground clearance use oval 2.5 inch tubing with chromed tips.
What do you think? That should quiet the exhaust a lot underneath the car and get rid of the droning etc. I am not currently planning on a Hpipe or an X pipe at this time. (I am probably going to lose a little low end but not too much where the tubing is only 2.5 inch.) What do you think? I dont care if it is loud to cars next to me as long as it isnt too loud in the car haha!
Thanks,
Chris
What do you think of the following?
MAC headers with Ypipe and 2.5 bullets in the Y.
Cut off the Y portion of the Ypipe.
Extend dual 2.5 inch tubing underneath the car
Use 2 90 degree mandrel bent 2.5 inch pieces of tubing and exit the exhaust right in front of the rear tires.
If necessary for ground clearance use oval 2.5 inch tubing with chromed tips.
What do you think? That should quiet the exhaust a lot underneath the car and get rid of the droning etc. I am not currently planning on a Hpipe or an X pipe at this time. (I am probably going to lose a little low end but not too much where the tubing is only 2.5 inch.) What do you think? I dont care if it is loud to cars next to me as long as it isnt too loud in the car haha!
Thanks,
Chris
Re: What do you think of this exhaust idea? Chris this is IMO the best way to go...
Macs w/Modded ORY to a cutout (Only opened for racing) then 3in over the axle to (1) 3in Dynomax Bullet Race Magnum and (1) 3in tail pipe exiting on the driver side
Yes its alittle loud but its <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" /> as hell and flows EXCELLENT...
This is how my car is setup now.
Once I go to the Dynatechs or Hookers I'll have a 3in ORY added to the mix.Other than that it'll remain the same.
JS
Macs w/Modded ORY to a cutout (Only opened for racing) then 3in over the axle to (1) 3in Dynomax Bullet Race Magnum and (1) 3in tail pipe exiting on the driver side
Yes its alittle loud but its <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" /> as hell and flows EXCELLENT...
This is how my car is setup now.
Once I go to the Dynatechs or Hookers I'll have a 3in ORY added to the mix.Other than that it'll remain the same.
JS
Re: What do you think of this exhaust idea? Seen/Heard it with an LT1 car. Was loud, but not crazy stupid loud. But what it did that sucked was removed all semblance of ground clearance. For some reason the things you have to go under after the 90 deg. made it a huge mess. Worked well for racing only though.
chris
chris
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Re: What do you think of this exhaust idea? Strange,
I looked under the car last night and didnt see any visible obstructions. My car is a formula so I dont have to worry about the lower body mouldings etc. Also my two bullet 2.5 inch mufflers are tucked up nicely out of the way in the front part of the Ypipe. I can also use oval tubing too if it proves to be a clearance issue. I am also not afraid to use a BFG for extra clearance either <img src="gr_images/icons/wink.gif" border="0">
I just want to get rid of the resonance under the car, the car is pretty much street/strip but I am not concerned so much with the noise issue. If this works well I am going to do it with the cat Ypipe I have too.
thanks again,
Chris
[ January 02, 2002: Message edited by: Chris ARE 360 ]</p>
I looked under the car last night and didnt see any visible obstructions. My car is a formula so I dont have to worry about the lower body mouldings etc. Also my two bullet 2.5 inch mufflers are tucked up nicely out of the way in the front part of the Ypipe. I can also use oval tubing too if it proves to be a clearance issue. I am also not afraid to use a BFG for extra clearance either <img src="gr_images/icons/wink.gif" border="0">
I just want to get rid of the resonance under the car, the car is pretty much street/strip but I am not concerned so much with the noise issue. If this works well I am going to do it with the cat Ypipe I have too.
thanks again,
Chris
[ January 02, 2002: Message edited by: Chris ARE 360 ]</p>
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Re: What do you think of this exhaust idea? That is true but I think I can design it to be far enough out of the way of the tires. The Saleens and Vipers had this setup without issue so I think I will be ok.
Chris
Chris
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Staging Lane
Joined: Nov 2001
Posts: 57
Likes: 0
From: Birmingham, AL
Re: What do you think of this exhaust idea? I just installed MAC headers and y-pipe. I welded two bullets in the y-pipe and screwed them up (bullets hit the floor pans). Right know i'm running 10" off the headers w/ bullets with turndowns right under the front seats until I get another y-pipe in. It is VERY LOUD, so loud it shakes my car. It's almost as loud as open headers. On a 1 to 10 scale, 10 being open headers I give my current setup a 8.5. Just make sure you have enough clearance space and not to make a $220 mistake like me!
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Re: What do you think of this exhaust idea? yep
Mine is running without a catback at all now just the Ypipe with 2.5 inch bullets and it is damn loud under the car. Thing is though if it were redirecting the sound out from under the car to the sides it would be much quieter in the passenger area but loud on either side. (Which is fine by me <img src="gr_stretch.gif" border="0">
The resonation with the exhaust dumping under the car is bad news.
Chris
Mine is running without a catback at all now just the Ypipe with 2.5 inch bullets and it is damn loud under the car. Thing is though if it were redirecting the sound out from under the car to the sides it would be much quieter in the passenger area but loud on either side. (Which is fine by me <img src="gr_stretch.gif" border="0">
The resonation with the exhaust dumping under the car is bad news.
Chris
Re: What do you think of this exhaust idea? Chris,
The bullets do very little in quieting down the exhaust. If you really want to make an impact on noise reduction while still flowing like a ****, you may want to consider the small Borla XR-1 mufflers instead of the bullets. They're low profile and just slightly bigger than cats. They would sound a lot better than bullets. Of course they cost over $100 each vs. $39 each for the bullets. In this case, you get what you pay for.
Patrick
The bullets do very little in quieting down the exhaust. If you really want to make an impact on noise reduction while still flowing like a ****, you may want to consider the small Borla XR-1 mufflers instead of the bullets. They're low profile and just slightly bigger than cats. They would sound a lot better than bullets. Of course they cost over $100 each vs. $39 each for the bullets. In this case, you get what you pay for.
Patrick
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Teching In
Joined: Nov 2001
Posts: 46
Likes: 0
From: Wichita Falls, Tx
Re: What do you think of this exhaust idea? You could also try the race magnum round mufflers, they are alittle larger then the bullets and quiet it down more. I am going to run these when I get around to it.
[ January 02, 2002: Message edited by: LS194z ]</p>
[ January 02, 2002: Message edited by: LS194z ]</p>
Re: What do you think of this exhaust idea? thats exactly what i have copy cat <img src="gr_tounge.gif" border="0">
btw it looks good (attention getter also) but i use the stock z28 tips in front of the tires. its a little loud but that may have a little something to do w/ the cam and no programming. but all in all i like it
[ January 02, 2002: Message edited by: Bout'ItZ28 ]</p>
btw it looks good (attention getter also) but i use the stock z28 tips in front of the tires. its a little loud but that may have a little something to do w/ the cam and no programming. but all in all i like it
[ January 02, 2002: Message edited by: Bout'ItZ28 ]</p>
Teching In
Joined: Nov 2001
Posts: 20
Likes: 0
From: St. Louis, Mazarah
Re: What do you think of this exhaust idea? The only issue is safety when you exit the exhaust right in front of the wheels. If for some reason, you grenade your engine, you stand the possibility of dumping oil right in front of your tires. Needless to say, that would be a very bad thing from a handling standpoint, especially given the concrete walls lining your pathway.