turbo exhaust for the N/A car - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

silvia lover · 03-12-2002, 01:22 AM

will the turbo exhaust works well for the N/A 240sx? beside the loud sound, what else problems will it have? plainning to get the 5zigen turbo exhaust for my 95 240, might change the cat. converted to 3in. freeflow as well.

**West** · 03-12-2002, 10:39 AM

If you can deal with a real loud exhaust then thats the biggest problem IMHO.

Although since you have a small 4 banger NA you will lose lots of backpressure and the result will be less tourqe and HP at the low end.

v8killer · 03-12-2002, 04:32 PM

Right on the money WeST. I run the 3" Apex cat-back, and it is LOUD. But I really don't feel like I've lost any torque on the KA. The KA is so known for torque, I figured I could flow better, and not miss the torque. I don't see a difference at all personally... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt='

'>

XylathaneGTR · 03-12-2002, 06:11 PM

West was right...
And arn't Turbo Exhausts set for the emissions from a turbo or wtv?
Anyways...that don't matter...U can just buy a silencer for the loud sound and have it installd...like, 50 bucks alltogether for that.
I personally like that loud sound...so sexy
if they make a Turbo Exhaust...they usually have a N/A one that's pretty similar.

misnomer · 03-12-2002, 07:04 PM

The idea behind a turbo exhaust is to get the air out of the car as quickly as possible, that's why they have such large pipes. An NA car typically gets better performance out of the right sized pipe, and it's not really due to backpressure. The column of air moving out the back helps to "suck" the air out of the combustion chamber during the exhaust cycle (sort of like a syphon). Higher velocity here can give better performance than sheer space. In addition, wider piping provides more room for turbulence, which prevents the exhaust from flowing as freely. It's not so much the size that counts, it's how it's made. As strait a pipe as you can get with consistent diameter is what you want for an NA car. For turbo, you just wanna get that shit out of there as quickly as possible.

DuffMan · 03-12-2002, 07:08 PM

Like misnomer said, backpressure doesn't produce torque or HP, and you want as little backpressure as possible, especially on our cars.

However pipes that big will cause less exhaust velocity and poor scaveging, which will cause a loss in mid range.

ijon03 · 03-13-2002, 02:01 AM

hey I have APEXI N1 cat back exhaust system and it feel great and I want to know if i go turbo willthe cat back hold and i dont loose power?Or should i change it ?
Thanks for any answer that will help me. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>

DuffMan · 03-13-2002, 02:47 AM

The APEXi N1 was designed for a turbo SR so it should be fine unless you intend to make some major boost on that thing.

MyFirst240SX · 03-13-2002, 03:48 PM

Will 3inch's sound like a ricer muffler? i hate that sound.

Cheater240SX · 03-13-2002, 09:32 PM

Hey!  I completely agree with misnomer!  GOOD ADVICE!

To reiterate, proper exhaust tubing diameter and length produces scavaging effects due to the gas inertia (sucks out exhaust from combustion chamber)--daimeter

and low pressure wave effects doe to resonating exhaust pulses--length

--Robert

03-12-2002, 01:22 AM	#1
silvia lover Zilvia Member Join Date: Feb 2002 Location: Portland, OR Posts: 229 Trader Rating: (0) Feedback Score: 0 reviews	will the turbo exhaust works well for the N/A 240sx? beside the loud sound, what else problems will it have? plainning to get the 5zigen turbo exhaust for my 95 240, might change the cat. converted to 3in. freeflow as well. __________________

03-12-2002, 10:39 AM	#2
West OMNOMNOMNOM Join Date: Dec 2000 Location: Denver, CO Age: 44 Posts: 6,456 Trader Rating: (0) Rides Gallery: West Feedback Score: 0 reviews	If you can deal with a real loud exhaust then thats the biggest problem IMHO. Although since you have a small 4 banger NA you will lose lots of backpressure and the result will be less tourqe and HP at the low end. __________________ West - Zilvia.net - Toyobaru.net - NapkinSketch.com

03-12-2002, 04:32 PM	#3
v8killer Zilvia Member Join Date: Oct 2001 Posts: 150 Trader Rating: (0) Feedback Score: 0 reviews	Right on the money WeST. I run the 3" Apex cat-back, and it is LOUD. But I really don't feel like I've lost any torque on the KA. The KA is so known for torque, I figured I could flow better, and not miss the torque. I don't see a difference at all personally... <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt=''> __________________ 91 SE Coupe wit' all the fixins' http://www.roadtoadspeedshops.com

03-12-2002, 06:11 PM	#4
XylathaneGTR Zilvia Junkie Join Date: Mar 2002 Posts: 362 Trader Rating: (0) Feedback Score: 0 reviews	West was right... And arn't Turbo Exhausts set for the emissions from a turbo or wtv? Anyways...that don't matter...U can just buy a silencer for the loud sound and have it installd...like, 50 bucks alltogether for that. I personally like that loud sound...so sexy if they make a Turbo Exhaust...they usually have a N/A one that's pretty similar. __________________ Ima newbie...! yay! Hopefully getting s14 with s15 sr20...

03-12-2002, 07:04 PM	#5
misnomer Nissanaholic! Join Date: Jul 2001 Location: Nevada Posts: 2,293 Trader Rating: (0) Feedback Score: 0 reviews	The idea behind a turbo exhaust is to get the air out of the car as quickly as possible, that's why they have such large pipes. An NA car typically gets better performance out of the right sized pipe, and it's not really due to backpressure. The column of air moving out the back helps to "suck" the air out of the combustion chamber during the exhaust cycle (sort of like a syphon). Higher velocity here can give better performance than sheer space. In addition, wider piping provides more room for turbulence, which prevents the exhaust from flowing as freely. It's not so much the size that counts, it's how it's made. As strait a pipe as you can get with consistent diameter is what you want for an NA car. For turbo, you just wanna get that shit out of there as quickly as possible. __________________ Rowsdower saves us and saves all the world!

03-12-2002, 07:08 PM	#6
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	Like misnomer said, backpressure doesn't produce torque or HP, and you want as little backpressure as possible, especially on our cars. However pipes that big will cause less exhaust velocity and poor scaveging, which will cause a loss in mid range.

03-13-2002, 02:01 AM	#7
ijon03 Zilvia Member Join Date: Feb 2002 Location: Murfreesboro,TN Age: 49 Posts: 199 Trader Rating: (0) Feedback Score: 0 reviews	hey I have APEXI N1 cat back exhaust system and it feel great and I want to know if i go turbo willthe cat back hold and i dont loose power?Or should i change it ? Thanks for any answer that will help me. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'> __________________

03-13-2002, 02:47 AM	#8
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	The APEXi N1 was designed for a turbo SR so it should be fine unless you intend to make some major boost on that thing.

03-13-2002, 03:48 PM	#9
MyFirst240SX Zilvia Junkie Join Date: Dec 2001 Posts: 599 Trader Rating: (0) Feedback Score: 0 reviews	Will 3inch's sound like a ricer muffler? i hate that sound. __________________ It is better to drive a Slow car fast than to drive a fast Car slow! '89 FastBack 5spd: Intake/Exhaust,Strut Bars and JL15. '90 Parts car/Some day drag car.

03-13-2002, 09:32 PM	#10
Cheater240SX Join Date: Jan 2002 Posts: 40 Trader Rating: (0) Feedback Score: 0 reviews	Hey!  I completely agree with misnomer!  GOOD ADVICE! To reiterate, proper exhaust tubing diameter and length produces scavaging effects due to the gas inertia (sucks out exhaust from combustion chamber)--daimeter and low pressure wave effects doe to resonating exhaust pulses--length --Robert