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Thoughts about going 4" exhaust? Improved equal length header design?

Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.
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Thoughts about going 4" exhaust? Improved equal length header design?

Old 06-16-2013, 07:16 PM
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Originally Posted by The Wizard View Post
They're making great progress and all almost done...

Teaser pic

Me Likes...Yep
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Old 06-17-2013, 07:47 AM
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so ti doesn't bend well
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Old 06-17-2013, 10:24 AM
  #43  
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Where is this shop in TX?
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Old 06-17-2013, 10:29 AM
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Originally Posted by t6378tp View Post
so ti doesn't bend well
Doesn't seem that way. Look at all the welds on the Meisterschaft Titanium exhaust. Here's a pic of the axle-back on the 370Z.

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Old 06-17-2013, 10:48 AM
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in general the VQ, especially the 3.5, has been shown to have more of a bottle neck with getting air in then out. I would start there 1st...I am sure this exhaust will look bad *** tho...
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Old 06-17-2013, 10:53 AM
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A lot of Ti exhausts are built this way. Here's a GTR titianium exhaust

[IMG][/IMG]
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Old 06-17-2013, 10:55 AM
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Originally Posted by MrEous View Post
Where is this shop in TX?
Power House Racing...aka PHR. I know them because they've been in the Supra game for a long time, and recently developed a full Ti exhaust for the Supra...which got me thinking.
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Old 06-17-2013, 11:00 AM
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Originally Posted by FastnFuriousMax View Post
in general the VQ, especially the 3.5, has been shown to have more of a bottle neck with getting air in then out. I would start there 1st...I am sure this exhaust will look bad *** tho...
We just started talking about it.

Now should we use the stock runners, cut off the rest, and fab up a custom manifold, with say a 3.5" TB and no EGR?

Modify a MEVI manifold?

Or build from scratch?
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Old 06-17-2013, 11:15 AM
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Originally Posted by The Wizard View Post
We just started talking about it.

Now should we use the stock runners, cut off the rest, and fab up a custom manifold, with say a 3.5" TB and no EGR?

Modify a MEVI manifold?

Or build from scratch?
I would think port the lower at the least. If you could replace it all together with shorter runner lengths overall it would be better for higher RPM horsepower. Everything should be thought about shifting the powerband to the right imo.

Check this out: http://horsepowercalculators.net/int...anifold-design <--it all seems to make sense and is logical. Tapered log style with internal stacks ftw.

SG's intake manifold testing: http://www.onpointdyno.com/?p=693 & http://www.onpointdyno.com/?p=1110

SG proved on the 3.5 it was all about the intake and their exhaust remained the same the entire time. Their custom long tubes which only made like 7whp more than the cattmans unless I am mistaken. Now at higher HP levels that may not remain true.

If you can get the 4'' in with no issues that is awesome. It might be easier with the oval piping. I wouldn't touch the headers unless you can prove them to be holding back your power. Can't you drop a pully size, better intake mani, big cams, and call it a day? Obviously what your goal is for the car is ultimately yours...

You are still a 3.0 right? If you want the best bang for your buck wouldn't the 3.5 swap be the place to start with the 3.0 timing chain cover and keep the SC?
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Old 06-17-2013, 02:30 PM
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Originally Posted by The Wizard View Post
A lot of Ti exhausts are built this way. Here's a GTR titianium exhaust

gorgeous
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Old 06-17-2013, 09:22 PM
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3" Ti

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Old 06-17-2013, 09:23 PM
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4" Ti

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Old 06-17-2013, 09:40 PM
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Thanks for the links F&FMax, much appreciated.
It appears the 4" Ti fits!
I'm running the smallest pulley Vortech makes. I may run a 928motorsports pulley and go even smaller. Yes, I can still do cams, and yes I'm still a 3.0. I want to see what can be done with the ol' trusty 3.0 for now w/o going 3.5.
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Old 06-18-2013, 01:21 PM
  #54  
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how much are you lowered
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Old 06-18-2013, 05:47 PM
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The norm...about 2" to 2.5"
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Old 06-18-2013, 05:50 PM
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Getting there...
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Old 06-18-2013, 06:03 PM
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Originally Posted by The Wizard View Post
Thanks for the links F&FMax, much appreciated.
It appears the 4" Ti fits!
I'm running the smallest pulley Vortech makes. I may run a 928motorsports pulley and go even smaller. Yes, I can still do cams, and yes I'm still a 3.0. I want to see what can be done with the ol' trusty 3.0 for now w/o going 3.5.
How much will you be over spinning the blower?

What do you hit now 9psi?

Headwork might help you some but not worth the cost imo unless you do cams and springs to rev it out. A 3.5 swap would be cheaper and open you up to many more engine components.

I only leave this here as it is funny:

edit. I don't claim to know anything.

Last edited by FastnFuriousMax; 06-18-2013 at 06:42 PM.
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Old 06-18-2013, 06:12 PM
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Originally Posted by The Wizard View Post
Getting there...


Nice, I wonder if the 4inch would hit the rear beam with a 3inch drop
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Old 06-18-2013, 06:43 PM
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Old 06-18-2013, 06:54 PM
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it makes my custom 3'' look like childsplay.
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Old 06-18-2013, 07:01 PM
  #61  
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i like the vband setup!


i hope you will do back to back dynos? switch exhaust on the same day and dyno on the same day.
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Old 06-19-2013, 05:24 AM
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would a 5inch round resonator/mufler have fit in the b-pipe, a str8 exhaust might be alittle loud for my liking
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Old 06-19-2013, 10:57 AM
  #63  
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Brave man for running straight through! Track only?
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Old 06-19-2013, 11:20 AM
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Originally Posted by FastnFuriousMax View Post
How much will you be over spinning the blower?

What do you hit now 9psi?
It's been a while since I've done the calculations, but it wasn't horrendous IIRC; and it's only for a second. Besides, I'm not too worried about the SC. I now know how to rebuild superchargers and where to get good quality seals. As they say, gotta pay to play...
Recently, I rebuilt a SC just prior to installing it on my daily driver Max about two months ago.

I should be hitting 12psi, but I'm at 10psi with the PWR water to air aftercooler system.

Last edited by The Wizard; 06-19-2013 at 12:06 PM.
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Old 06-20-2013, 05:22 PM
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Some teaser shots...

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Old 06-21-2013, 06:05 AM
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Looks awesome man. Great work.
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Old 06-21-2013, 03:22 PM
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Awesome!

Wonder how much time the fab guy has into this exhaust?
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Old 06-21-2013, 05:44 PM
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Thanks guys.

A few more...

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Old 06-21-2013, 07:54 PM
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Will these just be one off's?
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Old 06-22-2013, 03:55 AM
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Originally Posted by SpeedCrazie View Post
Will these just be one off's?
Why? are you gonna buy one? lol if yes then get some Vaseline ready!
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Old 06-22-2013, 06:36 PM
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Originally Posted by SpeedCrazie View Post
Will these just be one off's?
I believe so. They made no mention of building jigs for future systems.
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Old 06-24-2013, 12:34 PM
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The converter (test pipe) to change it from a sewer pipe down to 3". LOL

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Old 06-24-2013, 01:20 PM
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In for dynos,


will you be testing both setups on the same day? would be really nice to have a legit comparison.
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Old 06-24-2013, 07:44 PM
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Originally Posted by The Wizard View Post
Thanks for the links F&FMax, much appreciated.
It appears the 4" Ti fits!
I'm running the smallest pulley Vortech makes. I may run a 928motorsports pulley and go even smaller. Yes, I can still do cams, and yes I'm still a 3.0. I want to see what can be done with the ol' trusty 3.0 for now w/o going 3.5.
x2, thanks F&F for those links!!

And 4" !!! dayum!!

look forward to results, it looks soooo sexy
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Old 06-25-2013, 04:44 AM
  #75  
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so when is the install and dyno going down
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Old 06-25-2013, 05:29 PM
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Originally Posted by SurraTT View Post
In for dynos, will you be testing both setups on the same day? would be really nice to have a legit comparison.
Yes, but I can't promise it will happen anytime soon.

Originally Posted by t6378tp View Post
so when is the install and dyno going down
Not sure. Systems are done, will be shipped to me soon. Install will be immediate, dyno will have to wait a little when time frees up. I hope to post up some sound clips though to tie you guys over...
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Old 06-25-2013, 05:30 PM
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Last of the pics I think...just the tip of the 4" system needs to get "burned"
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Old 06-25-2013, 06:44 PM
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so did you have the 3inch made for someone or just encase you don't like the 4inch
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Old 07-27-2013, 08:43 AM
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I need an exhaust too, too bad they aren't selling them.
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Old 08-04-2013, 07:12 PM
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very nice set up it look good on my old max
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