3" exhaust on my 240.... (help)

Dc2TyP3R · 12-31-2004, 11:09 PM

I was thinking about putting 3" exhaust on my stock 1997 240sx cept I don't know if it will work for the 240 I forgot what they called it because it was stock like there wasn't gunna be enough air flow or pressure or something but if it is possible where can I get the parts and what are all the parts that I need to put 3" exhaust on my 240

raemi · 01-01-2005, 01:01 AM

a 3" exhaust on your car will cause in a lack of back pressure. it wont really help you on the low end but at the top end it will give you a little bit more power. the best thing to add to your car to make a 3" exhaust efficient is a turbo.

UberSpeed · 01-01-2005, 02:56 PM

that thing you are talking about it back pressure. It supposedly (or maybe its been proven) gives the motor more torque. If you plan on adding a turbo or SR20DET in the near future, just get a new intake and maybe a cheaper or no exaust. Once you get a turbo system or motor, the turbine will deliver plenty of back pressure, so then a 3 incher would be grand.

However if you just wanna keep it NA, stick wit a 2.5 or 2.75 inch exaust

Dc2TyP3R · 01-01-2005, 05:47 PM

SO if I did an SR20DET swap it will give enough back pressure to run a 3" exhaust with any problems?

GRiDRaceTech · 01-01-2005, 06:10 PM

Both Raemi and Uberspeed should not have posted. Their information is incorrect.

A proper 3" exhaust on the KADE will give gains throughout the rev range, not just up high. An increase of 8-12whp isn't uncommon.

3" is ok for an SR swap.

raemi · 01-01-2005, 06:42 PM

Quote:

Originally posted by GRiDRaceTech
Both Raemi and Uberspeed should not have posted. Their information is incorrect.

A proper 3" exhaust on the KADE will give gains throughout the rev range, not just up high. An increase of 8-12whp isn't uncommon.

3" is ok for an SR swap.

can i see dyno sheets on this?

GRiDRaceTech · 01-01-2005, 07:34 PM

Yes, you can.

Post number 14.

http://www.zilvia.net/f/showthread.p...t=exhaust+dyno

raemi · 01-01-2005, 09:43 PM

Quote:

Originally posted by GRiDRaceTech
Yes, you can.

Post number 14.

http://www.zilvia.net/f/showthread.p...t=exhaust+dyno

thanks but i want a dyno sheet of a 60mm exhaust to compare it to as well (if possible).

GRiDRaceTech · 01-02-2005, 12:11 AM

It just so happens I have one of those too.

(Dyno done by S14DB on Zilvia.net)

Ris4drift · 01-02-2005, 03:16 AM

Quote:

Originally posted by raemi
a 3" exhaust on your car will cause in a lack of back pressure. it wont really help you on the low end but at the top end it will give you a little bit more power. the best thing to add to your car to make a 3" exhaust efficient is a turbo.

what a n00b post.

i love you, tell andy to get my stuff

Chachi · 01-15-2005, 09:12 PM

Quote:

Originally posted by raemi
a 3" exhaust on your car will cause in a lack of back pressure. it wont really help you on the low end but at the top end it will give you a little bit more power. the best thing to add to your car to make a 3" exhaust efficient is a turbo.

I put a 3" on my KA and it had more power all around, I didnt lose any power I could feel but I did feel that it was faster, more than I would expect from just adding an exhaust

12-31-2004, 11:09 PM	#1
Dc2TyP3R Newbie Join Date: Dec 2004 Location: San Diego Posts: 15	3" exhaust on my 240.... (help) I was thinking about putting 3" exhaust on my stock 1997 240sx cept I don't know if it will work for the 240 I forgot what they called it because it was stock like there wasn't gunna be enough air flow or pressure or something but if it is possible where can I get the parts and what are all the parts that I need to put 3" exhaust on my 240

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01-01-2005, 01:01 AM	#2
raemi Registered User Join Date: Jan 2004 Location: 713 - 808 - 714 Posts: 111	a 3" exhaust on your car will cause in a lack of back pressure. it wont really help you on the low end but at the top end it will give you a little bit more power. the best thing to add to your car to make a 3" exhaust efficient is a turbo.

01-01-2005, 02:56 PM	#3
UberSpeed Registered User Join Date: Aug 2004 Location: Minneapolis MN Posts: 211	that thing you are talking about it back pressure. It supposedly (or maybe its been proven) gives the motor more torque. If you plan on adding a turbo or SR20DET in the near future, just get a new intake and maybe a cheaper or no exaust. Once you get a turbo system or motor, the turbine will deliver plenty of back pressure, so then a 3 incher would be grand. However if you just wanna keep it NA, stick wit a 2.5 or 2.75 inch exaust

01-01-2005, 05:47 PM	#4
Dc2TyP3R Newbie Join Date: Dec 2004 Location: San Diego Posts: 15	SO if I did an SR20DET swap it will give enough back pressure to run a 3" exhaust with any problems?

01-01-2005, 06:10 PM	#5
GRiDRaceTech Opposite Lock Join Date: Jan 2004 Location: SoCal Posts: 1,096	Both Raemi and Uberspeed should not have posted. Their information is incorrect. A proper 3" exhaust on the KADE will give gains throughout the rev range, not just up high. An increase of 8-12whp isn't uncommon. 3" is ok for an SR swap.

01-01-2005, 07:34 PM	#7
GRiDRaceTech Opposite Lock Join Date: Jan 2004 Location: SoCal Posts: 1,096	Yes, you can. Post number 14. http://www.zilvia.net/f/showthread.p...t=exhaust+dyno

01-02-2005, 12:11 AM	#9
GRiDRaceTech Opposite Lock Join Date: Jan 2004 Location: SoCal Posts: 1,096	It just so happens I have one of those too. (Dyno done by S14DB on Zilvia.net)