stock exhaust diameter

SuperXero · 11-04-2009, 12:04 AM

can someone tell me what the stock exhaust diameter is?

SuperXero · 11-25-2009, 02:18 AM

wow seriously no one knows?

370Zsteve · 11-25-2009, 09:12 AM

Why do you want to know? What knowledge will you gain from the diameter? Where do you want folks to measure? Are you OK with the fact that different areas of the exhaust will have different diameters? Do you know that if you increase the diameter on the exhaust, you will lose power?

SuperXero · 11-25-2009, 11:53 AM

on one side not at the y-pipe section. and you only lose power when the piping is too large unless all these aftermarket exhaust systems are meant to lose power and and just gain noise.

corbin09 · 11-25-2009, 12:42 PM

2.25"

Zsteve · 11-25-2009, 03:57 PM

Quote:

Originally Posted by SuperXero

on one side not at the y-pipe section. and you only lose power when the piping is too large unless all these aftermarket exhaust systems are meant to lose power and and just gain noise.

well if you know all that then why dont you know the rest? Coming in here with that attitude will just get your posted flamed and no good info from it.

TongMan · 10-30-2010, 06:18 PM

I want to know this as well. Can someone confirm 2.25"?

Abdiel · 10-31-2010, 06:00 PM

Non-Nismo should be the same as G37 I believe:

Exhaust diameter question re: Berk HFC to OEM mid pipe - MyG37

ninous26 · 10-31-2010, 08:45 PM

Its definitely 2.25 I don't even have a 370z and I know this.. I did a project with a 370z full exhaust a while back.

Increasing piping size definitely does not lose power.

Nismo is the same I believe but has a different flow in the muffler section and is true dual at the y pipe area.

11-04-2009, 12:04 AM	#1 (permalink)
SuperXero Base Member Join Date: Jul 2009 Location: Silver Spring, MD Posts: 7 Drives: Scion tC Rep Power: 16	stock exhaust diameter can someone tell me what the stock exhaust diameter is?

11-25-2009, 09:12 AM	#3 (permalink)
370Zsteve A True Z Fanatic Join Date: Sep 2009 Location: Gold Coast CT Posts: 10,599 Drives: 2019 Corvette G.S. Rep Power: 43	Why do you want to know? What knowledge will you gain from the diameter? Where do you want folks to measure? Are you OK with the fact that different areas of the exhaust will have different diameters? Do you know that if you increase the diameter on the exhaust, you will lose power? onesho likes this. __________________ SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

11-25-2009, 11:53 AM	#4 (permalink)
SuperXero Base Member Join Date: Jul 2009 Location: Silver Spring, MD Posts: 7 Drives: Scion tC Rep Power: 16	on one side not at the y-pipe section. and you only lose power when the piping is too large unless all these aftermarket exhaust systems are meant to lose power and and just gain noise. Last edited by SuperXero; 11-25-2009 at 11:59 AM.

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11-25-2009, 02:18 AM	#2 (permalink)
SuperXero Base Member Join Date: Jul 2009 Location: Silver Spring, MD Posts: 7 Drives: Scion tC Rep Power: 16	wow seriously no one knows?

11-25-2009, 12:42 PM	#5 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 280	2.25"

10-30-2010, 06:18 PM	#7 (permalink)
TongMan A True Z Fanatic Join Date: Feb 2010 Location: NorCal Posts: 1,297 Drives: 2013 Nissan GTR Rep Power: 715	I want to know this as well. Can someone confirm 2.25"?

10-31-2010, 06:00 PM	#8 (permalink)
Abdiel Base Member Join Date: Jan 2009 Location: Detroit, MI Posts: 73 Drives: 09 G37S 6MT Rep Power: 16	Non-Nismo should be the same as G37 I believe: Exhaust diameter question re: Berk HFC to OEM mid pipe - MyG37

10-31-2010, 08:45 PM	#9 (permalink)
ninous26 Base Member Join Date: Sep 2009 Location: Phoenix AZ Posts: 112 Drives: 03 G35 black 5AT Rep Power: 16	Its definitely 2.25 I don't even have a 370z and I know this.. I did a project with a 370z full exhaust a while back. Increasing piping size definitely does not lose power. Nismo is the same I believe but has a different flow in the muffler section and is true dual at the y pipe area.