Nissan 370Z Forum  

Straight pipes

Hello, I got these custom straight pipes which delete the mufflers and it gets extremely loud above about 4k rpm to the point i hear parts of the car vibrating.

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Intake/Exhaust


Like Tree1Likes
  • 1 Post By synolimit

Reply
 
LinkBack Thread Tools Display Modes
Old 04-20-2014, 09:49 AM   #1 (permalink)
Base Member
 
konsta's Avatar
 
Join Date: Dec 2013
Location: Dubai
Posts: 156
Drives: 370z
Rep Power: 296
konsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond repute
Default Straight pipes

Hello,

I got these custom straight pipes which delete the mufflers and it gets extremely loud above about 4k rpm to the point i hear parts of the car vibrating.
I'm running stock cats and everything else.

I was wondering if this is normal or might damage something from the extreme vibrations. Also do these straight pipes increase back pressure and reduce torque or hp somehow?


Thanks,
konsta is offline   Reply With Quote
Old 04-20-2014, 10:48 AM   #2 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3388
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Lol no you'll be fine. And they wouldn't increase pressure, they'd decrease it. Back pressure is kind of a myth. Exhausts have more to do with scavenging and a muffler delete will not help nor hurt it.
DEpointfive0 likes this.
__________________
13 370z-
synolimit is offline   Reply With Quote
Old 04-20-2014, 10:53 AM   #3 (permalink)
Base Member
 
konsta's Avatar
 
Join Date: Dec 2013
Location: Dubai
Posts: 156
Drives: 370z
Rep Power: 296
konsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond repute
Default

Lol whoops I meant decrease back pressure, but does that vibration thing happen to all cbe with loud noise or is it just my ghetto thing? Cause I'm thinking of getting a cbe or top speed axle back but if it's the same thing might as well keep mine.

Thanks for the help


Sent from my iPhone using Tapatalk
konsta is offline   Reply With Quote
Old 04-20-2014, 12:32 PM   #4 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3388
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Just a nissan thing. It's just a cheap Japanese car spot welded together. Things rattle. A CBE will have a bigger/better mid pipe and X or Y or H pipe. Sound and rattle won't change much unless you buy a reall quite CBE.
__________________
13 370z-
synolimit is offline   Reply With Quote
Old 04-20-2014, 12:54 PM   #5 (permalink)
Base Member
 
konsta's Avatar
 
Join Date: Dec 2013
Location: Dubai
Posts: 156
Drives: 370z
Rep Power: 296
konsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond repute
Default

Quote:
Originally Posted by synolimit View Post
Just a nissan thing. It's just a cheap Japanese car spot welded together. Things rattle. A CBE will have a bigger/better mid pipe and X or Y or H pipe. Sound and rattle won't change much unless you buy a reall quite CBE.
So basically the louder it is the more rattle it'll have for the most part?

Mine does have lots of vibrations from the inside which i thought was not normal since its my first car mod, but now i know its normal

Thanks a lot man !
konsta is offline   Reply With Quote
Old 04-20-2014, 02:01 PM   #6 (permalink)
A True Z Fanatic
 
Jordo!'s Avatar
 
Join Date: May 2010
Location: nirvana
Posts: 6,394
Drives: 2023 NATM
Rep Power: 417
Jordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond reputeJordo! has a reputation beyond repute
Default

Quote:
Originally Posted by synolimit View Post
Back pressure is kind of a myth.
Not exactly. Too much flow when the engine isn't drawing in enough air /or there is too much valve timing (typically, at lower RPMS) to match the exhaust will slow down the exhaust pulses.

But anyway, yeah, the VQ37HR sounds like a tractor without cleverly placed resonators.

You can add resonators strategically to minimize the noise -- there's a thread on this floating around.
__________________
Enjoy it. Destroy it.
Jordo! is offline   Reply With Quote
Old 04-20-2014, 05:14 PM   #7 (permalink)
A True Z Fanatic
 
synolimit's Avatar
 
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3388
synolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond reputesynolimit has a reputation beyond repute
Default

Quote:
Originally Posted by konsta View Post
So basically the louder it is the more rattle it'll have for the most part?

Mine does have lots of vibrations from the inside which i thought was not normal since its my first car mod, but now i know its normal

Thanks a lot man !
Not really. A loud cbe can still have good flow. Loud and crapy flow with have rasp, drone, vibrate etc.
__________________
13 370z-
synolimit is offline   Reply With Quote
Old 04-20-2014, 11:37 PM   #8 (permalink)
Base Member
 
konsta's Avatar
 
Join Date: Dec 2013
Location: Dubai
Posts: 156
Drives: 370z
Rep Power: 296
konsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond reputekonsta has a reputation beyond repute
Default

I see, thanks !


Sent from my iPhone using Tapatalk
konsta is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Straight Pipes on a Enzo. SPOHN Other Vehicles 6 10-22-2013 11:54 PM
Short Tails/Straight Pipes. Jonez0508 Intake/Exhaust 12 06-28-2013 10:15 PM
Straight pipes to stock muffler? NotMyBday Intake/Exhaust 2 03-30-2013 04:15 PM
opinions on straight pipes spiker09 Intake/Exhaust 0 10-22-2011 09:08 PM


All times are GMT -5. The time now is 03:54 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2