S/C exhaust [Archive] - Aleromod.com

Caboose73

01-22-2009, 08:16 PM

I have a quick question i bought a dynomax super turbo with a 3inch inlet and dual 2 1/4inch outlets.I was planning on running a 3inch exhaust with my turbo but now that im going to buy ions S/C will it still be fine to run the 3inch exhaust with the S/C or will i lose to much low end Tq?Ive searched around and i saw alot of people running 2.5inch so i wasnt sure.

Also to give you guys a heads up when ever i get the S/C im going to put my brand new top mount turbo manifold up for sale.

[ion] C2

01-22-2009, 08:37 PM

It'll be fine. I run 2.5" with a Dynomax Super turbo though.

Caboose73

01-22-2009, 10:30 PM

Is there anyway to take the super charger apart and powder coat it ?

[ion] C2

01-22-2009, 10:48 PM

Yep, or you can have Stiegemeier polish it:

http://www.stiegemeier.com/images/webpost/polished%20stuff%20img/gt%20500%20063.jpg

Spilner521

01-23-2009, 12:11 AM

Yes, you could run a 3" exhaust no problem. It's a common misconception that just because there's no turbo in the exhaust stream, it means you still need small piping to maintain exhaust velocity and low end torque.

The reason you want high exhaust velocity on a NA engine is so that the scavenging effect inside the cylinder pulls in fresh intake air when the exhaust is pumped out. On an engine with any kind of boost, the air is being forced in, which means exhaust scavenging has no affect on how much air is being pulled in. On top of that, with the instant boost of a positive displacement supercharger, it'll provide so much more low end torque than exhaust scavenging ever could. And on top of that, with boost comes more exhaust gasses being generated. You need a big enough pipe to accommodate all that added volume.

So basically what you want for any type of boosted application is an exhaust system with the least amount of backpressure that you can get. You do this with with larger piping and straight through mufflers.

If you're really worried about it (I wouldn't be) you could always just run a 2.5" exhaust and an expander to 3" right at the muffler. It would be no big deal, since at lower power levels, 2.5" pipe is plenty.

kwhauck

01-23-2009, 09:53 AM

3" will be fine, and I had no problem with low end torque, i could have actually lost some just to get some traction!! but with the new I am trying to decide between 3.5" and 4" and where to begin these said pipe sizes since the headers are 1 5/8 into 3"

Spilner521

01-25-2009, 04:16 AM

3" to the cat (or where there used to be a cat) then one of these..

Low turbulence cone reducer - 3" to 3.5"
http://www.yearone.com/images/parts/fe_fm/fmr3530.jpg
..then 3.5" cat-back.

Or you could always put the cone right at the header and run 3.5" from the header :thumb:

kwhauck

01-25-2009, 10:40 AM

You think 3.5" is enough? And I could always have a custom collector made where primaries go into a 3.5 or 4 collector

NickAlero2000

01-25-2009, 09:14 PM

these are some big ass exhausts we're talking here lol
im thinking 3 1/2 for my setup, want to run 10's eventually, why not just start where im gonna end?

Bad99Olds

01-25-2009, 09:30 PM

these are some big ass exhausts we're talking here lol
im thinking 3 1/2 for my setup, want to run 10's eventually, why not just start where im gonna end?

ur gonna need more than a twincharge at 9psi to run 10's. lolz. unless its a bicycle.

MixtapeMessiah

01-25-2009, 09:55 PM

Good luck

MixtapeMessiah

01-25-2009, 09:57 PM

these are some big ass exhausts we're talking here lol
im thinking 3 1/2 for my setup, want to run 10's eventually, why not just start where im gonna end?

You'd be lucky dude, Spy was pushin out 450hp on his old setup and barely hit high 11's in the 1/4

Caboose73

01-25-2009, 10:04 PM

besides taking out the interior what can we do to shave some pounds off the Ho

MixtapeMessiah

01-25-2009, 10:11 PM

lol gut everything? still then u better be plannin on more than 500 horses, but good luck with that..

NickAlero2000

01-25-2009, 10:14 PM

You'd be lucky dude, Spy was pushin out 450hp on his old setup and barely hit high 11's in the 1/4

yes, this i know because im buyin his old setup lol.
and he hit a low 12 with it. i know the setup has more potential and is capable of higher boost levels and tweaking here and there.

Spy was only at 14 lbs when he made 432 hp and ran 12. He feels it would have been capable of mid 11s had his trans not gone. I can and will push this setup to higher horsepower and boost levels. some have run 18 pounds with the GT3076R, and have produced far greater horsepower.
I'll top out this setup and in time, will buy a bigger turbo and such.

Internals are next summers project as well, but for now im focusing on getting boosted.

By the end of junior year in college, i would like a 10 second Alero.

MixtapeMessiah

01-25-2009, 10:19 PM

Well good luck to you bro, u face many trials and errors hope ur ready!

NickAlero2000

01-25-2009, 11:15 PM

Thanks for the well wishes, I'm as ready as I will ever be!

billytheman1188

01-25-2009, 11:27 PM

yes, this i know because im buyin his old setup lol.
and he hit a low 12 with it. i know the setup has more potential and is capable of higher boost levels and tweaking here and there.

Spy was only at 14 lbs when he made 432 hp and ran 12. He feels it would have been capable of mid 11s had his trans not gone. I can and will push this setup to higher horsepower and boost levels. some have run 18 pounds with the GT3076R, and have produced far greater horsepower.
I'll top out this setup and in time, will buy a bigger turbo and such.

Internals are next summers project as well, but for now im focusing on getting boosted.

By the end of junior year in college, i would like a 10 second Alero.

:popcorn::popcorn: Bring that beast to lebanon valley.....too many people with imports there who think their the fastest...like usual. One kid has a neon srt-4 and thinks its the shiiiiit:lol: then theres that girl carla with the VR4, that thing is gonna be a beast though.........then you show up and smoke them with an alero:coolio: Im excited to see how this project turns out. Good luck man, we still gotta meet up around here sometime.... ive just been busy/EXHAUSTED the last few weeks, too much going on right now.

kwhauck

01-26-2009, 01:08 AM

12.4 isn't a low 12.....

NickAlero2000

01-26-2009, 12:20 PM

12.4 isn't a low 12.....

so a mid to low 12 then, still faster than any n-body aounrd

:popcorn::popcorn: Bring that beast to lebanon valley.....too many people with imports there who think their the fastest...like usual. One kid has a neon srt-4 and thinks its the shiiiiit:lol: then theres that girl carla with the VR4, that thing is gonna be a beast though.........then you show up and smoke them with an alero:coolio: Im excited to see how this project turns out. Good luck man, we still gotta meet up around here sometime.... ive just been busy/EXHAUSTED the last few weeks, too much going on right now.

and yes, i will be going to lebanon in the spring! and we do need to meet up sometime, ive also been busy/exhausted with school and work, RPI is no joke...

spyhunter

01-26-2009, 03:07 PM

my old setup was capable of doing a high 11. The few issues that came afloat at those times was... I ran the stock headgasket and headbolts and a SPEC stage 3 clutch. Running around at 15lbs and 430'ish hp obviously you can see something would happen.

It happened at the track, I blew the headgasket and trashed the clutch and ran a 12.4@118mph, if that mph tells you anything it tells you that the car had the juice to do it, just wasn't able to get it to the ground properly enough.. To run a 12.4 you can do it with like 350hp.

The next few times out the tranny itself was an issue, destroyed tranny. This was a tranny I learned to drive stick in, as well as teaching 3 girls to drive stick in. Imagine all the grinding we all did while learning.... So now with all the power going through it, the synchros killed themselves.

spyhunter

01-26-2009, 03:08 PM

12.4 isn't a low 12.....

Sure it is. 12.5 is a mid 12. 12.6-12.9 is a high 12. 12.0-12.4 is a low 12.

[ion] C2

01-26-2009, 03:17 PM

lol i figured the scale was

low 12.0-12.3
mid 12.4-12.6
high 12.7-12.9

kwhauck

01-26-2009, 03:42 PM

so a mid to low 12 then, still faster than any 99+ n-body around

corrected!! oh and i'm just busting on spy, i'll be the first to give him props for what he has done, and from what i've seen he has got some new parts that will really wake things up....

oh just to point something out, the 24.5 in drag tires effectively raise gear ratio and rpm range allowing the turbo to really do the work sooner than normal.....

spyhunter

01-26-2009, 04:43 PM

corrected!! oh and i'm just busting on spy, i'll be the first to give him props for what he has done, and from what i've seen he has got some new parts that will really wake things up....

oh just to point something out, the 24.5 in drag tires effectively raise gear ratio and rpm range allowing the turbo to really do the work sooner than normal.....

speaking of such I just got my new gas tank. :) it's steel, now I need my sump to show up.

kwhauck

01-26-2009, 04:47 PM

sweet........my build has come to a screeching halt with getting laid off and all, i just hope i don't have to sell any parts off...

NickAlero2000

01-26-2009, 06:53 PM

sweet........my build has come to a screeching halt with getting laid off and all, i just hope i don't have to sell any parts off...

I hope so too dude....
I want the c/f hood though should you be willing to ship it lol

kwhauck

01-26-2009, 09:02 PM

i'd ship it, except i got a freight quote of $350!!!

NickAlero2000

01-26-2009, 10:48 PM

wtf?!?
350 shipped please? lol jk....
How much on a greyhound bus?

spyhunter

01-26-2009, 11:23 PM

wtf?!?
350 shipped please? lol jk....
How much on a greyhound bus?

$50 bucks maybe.

NickAlero2000

01-26-2009, 11:36 PM

46.25 from colorado springs...lol

AleroB888

01-26-2009, 11:38 PM

........It happened at the track, I blew the headgasket and trashed the clutch and ran a 12.4@118mph, if that mph tells you anything it tells you that the car had the juice to do it, just wasn't able to get it to the ground properly enough.. To run a 12.4 you can do it with like 350hp......

Which was the run in the vid linked in the sig? looks like 112.3 in that one.

Btw, you need brand new inner tubes for your slicks? trade?

NickAlero2000

01-26-2009, 11:52 PM

Spilner521

01-27-2009, 09:39 PM

I intend to show that the old setup is capable of a high 11, on my car though! lol
Summer '09 isn't too far off...you better get to work :thumb:

You think 3.5" is enough? And I could always have a custom collector made where primaries go into a 3.5 or 4 collector
How much power are you looking to push? Having the headers dump into a collector the same size as the exhaust is the best way to go :thumb:

kwhauck

01-27-2009, 10:00 PM

whatever pushes me into the 11s at bandimere, so far I have built everything thinking 500whp daily driven.....

Spilner521

01-27-2009, 10:04 PM

3.5" would be fine for a 500hp 3.4L V6.

NickAlero2000

01-27-2009, 11:37 PM

Summer '09 isn't too far off...you better get to work :thumb:

Oh I intend to do more than that!!!
The built engine is far out of budget this summer, but being turbo'ed to 8 or 9 pounds is WELL within reasonable, along with a few visual enhancements :D. This summer will be fucking insane, on EVERY level possible. It will be unmatchable. Period.

Edit: Well, at least for me. lol

Spilner521

01-28-2009, 11:43 PM

Do it up, let's see it

Bad99Olds

01-29-2009, 12:55 AM

Oh I intend to do more than that!!!
The built engine is far out of budget this summer, but being turbo'ed to 8 or 9 pounds is WELL within reasonable, along with a few visual enhancements :D. This summer will be effing insane, on EVERY level possible. It will be unmatchable. Period.

Edit: Well, at least for me. lol

it all talk till its done :)

NickAlero2000

01-29-2009, 01:23 AM

it all talk till its done :)

Agreed. I can't wait until I can actually say, heres my set up, pointing to my car proudly as I say it!

spyhunter

01-29-2009, 02:40 AM

Which was the run in the vid linked in the sig? looks like 112.3 in that one.

Btw, you need brand new inner tubes for your slicks? trade?

The vid in the sig is my first 12.4.. There is no video of my 118mph trap, just a slip wherever the hell it is.

My slicks are tubeless.

kwhauck

01-29-2009, 10:17 AM

it all talk till its done :)

I concur, I try not to talk too much about my setup, just because it isn't done, and I don't know when it will be, i just know it will be done.....

I do know one thing though, 5 speed swap with stock motor WILL be done before May....then i might throw a little juice on there until my built motor is done.....