exhaust question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nurspecsil · 03-15-2004, 01:56 PM

I am sure this question has been asked before but I searched and couldnt find exactly what i was lookin for.

Ok I need a new exhaust. Mine is started to get scuffed and not nice not to mention the piping is starting to get old. I have decided I am going to get the HKS Hipower.

Now here is my question. I am going to be putting an SR20DET into my S14 in the near future, but i need the exhaust now. So i figured the smart thing to do would be get the 85mm exhaust that way it will be perfect for the swap. Or is my thinking flawed here?

Now the other part of the question is how well will the 85mm exhaust bolt up to the stock header? Will it work no probs or is there gonna be some issues??

Thanks
Chad

no-face · 03-15-2004, 03:18 PM

Quote:

Or is my thinking flawed here?

No but it will probably be really load and get you more attention then you desire.

Quote:

85mm exhaust bolt up to the stock header?

- actually it will be bolting up to your cat but to answer your question yes the bolt holes will match on each flang. I would suggest getting a high flow cat while your at it, do us a favor and help out the environment.

wylin · 03-15-2004, 04:35 PM

actually i'd vote against a highflow cat there since your adding a 2nd catalyst (the s14's is close coupled on the exhaust manifold)

nurspecsil · 03-15-2004, 05:51 PM

Thanks for the info. I thought that the cat and the header on an S14 was a single unit. My bad. I have never looked so it wouldnt surprise me that they arent.

Chad

AadosX · 03-15-2004, 09:24 PM

Go ahead and get a big exhaust. Yes it will bolt up.

oojpeeoo · 03-15-2004, 10:38 PM

there is no such thing as a BIG exhuast on a 240,,,hehehe wooot

nurspecsil · 03-16-2004, 12:28 AM

on a side note how bad is the larger diameter piping going to affect my performance until i get the SR??

AadosX · 03-16-2004, 01:01 AM

You won't notice a difference. With the perfect exhaust you MIGHT gain 5-10 rwhp, with an exhaust that is 'too big' you will probably gain 0-5. Who cares, the car is slow either way and you won't be able to feel a difference in your butt dyno.

Bryants95240sx · 03-16-2004, 07:21 AM

^Agree although i have seen dyno charts that prove that big exhaust on the KA isnt bad he gained like 10-12 rwhp with the 3' diameter piping on his NA KA

AutoRnD · 03-16-2004, 11:43 AM

yes! nA KA with 3 inch 155 at wheel hp and tq.. with just intake and exhaust...

03-15-2004, 01:56 PM	#1
nurspecsil Leaky Injector Join Date: Mar 2003 Location: Canada Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	exhaust question I am sure this question has been asked before but I searched and couldnt find exactly what i was lookin for. Ok I need a new exhaust. Mine is started to get scuffed and not nice not to mention the piping is starting to get old. I have decided I am going to get the HKS Hipower. Now here is my question. I am going to be putting an SR20DET into my S14 in the near future, but i need the exhaust now. So i figured the smart thing to do would be get the 85mm exhaust that way it will be perfect for the swap. Or is my thinking flawed here? Now the other part of the question is how well will the 85mm exhaust bolt up to the stock header? Will it work no probs or is there gonna be some issues?? Thanks Chad

03-15-2004, 04:35 PM	#3
wylin Zilvia Addict Join Date: Apr 2002 Location: Fob Land Socal Age: 46 Posts: 635 Trader Rating: (0) Feedback Score: 0 reviews	actually i'd vote against a highflow cat there since your adding a 2nd catalyst (the s14's is close coupled on the exhaust manifold) __________________ 2003 G35 sedan, 03 m45, 06 S2000

03-15-2004, 05:51 PM	#4
nurspecsil Leaky Injector Join Date: Mar 2003 Location: Canada Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	thanks Thanks for the info. I thought that the cat and the header on an S14 was a single unit. My bad. I have never looked so it wouldnt surprise me that they arent. Chad

03-16-2004, 07:21 AM	#9
Bryants95240sx Zilvia Addict Join Date: Feb 2004 Location: alabama Age: 37 Posts: 668 Trader Rating: (0) Feedback Score: 0 reviews	^Agree although i have seen dyno charts that prove that big exhaust on the KA isnt bad he gained like 10-12 rwhp with the 3' diameter piping on his NA KA __________________

03-16-2004, 11:43 AM	#10
AutoRnD Post Whore! Join Date: Nov 2003 Location: SF BAY AREA, CA Posts: 2,601 Trader Rating: (1) Rides Gallery: AutoRnD Feedback Score: 1 reviews	yes! nA KA with 3 inch 155 at wheel hp and tq.. with just intake and exhaust... __________________ www.AutoRnD.com Nardi, Enkei, Stance, AME Master Distributors for USA Check Out Our Facebook!

03-15-2004, 09:24 PM	#5
AadosX Zilvia Addict Join Date: Dec 2003 Location: Auburn University Posts: 959 Trader Rating: (0) Feedback Score: 0 reviews	Go ahead and get a big exhaust. Yes it will bolt up.

03-15-2004, 10:38 PM	#6
oojpeeoo Zilvia Junkie Join Date: Feb 2004 Location: san jose Posts: 538 Trader Rating: (0) Feedback Score: 0 reviews	there is no such thing as a BIG exhuast on a 240,,,hehehe wooot

03-16-2004, 12:28 AM	#7
nurspecsil Leaky Injector Join Date: Mar 2003 Location: Canada Posts: 144 Trader Rating: (0) Feedback Score: 0 reviews	on a side note how bad is the larger diameter piping going to affect my performance until i get the SR??

03-16-2004, 01:01 AM	#8
AadosX Zilvia Addict Join Date: Dec 2003 Location: Auburn University Posts: 959 Trader Rating: (0) Feedback Score: 0 reviews	You won't notice a difference. With the perfect exhaust you MIGHT gain 5-10 rwhp, with an exhaust that is 'too big' you will probably gain 0-5. Who cares, the car is slow either way and you won't be able to feel a difference in your butt dyno.