stock exhuast q - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Demik · 05-20-2004, 05:32 PM

just a quick question.. would it be "safe" to run my stock exhuast on my sr with 3 inch dp and 3 inch test pipe. just untill i get my new cool exhuast in the mail?
thanks in advance

TheTimanator · 05-20-2004, 05:53 PM

running stock boost? Sure.

Pepperoni · 05-20-2004, 06:48 PM

So it would be 3"(DP)->3"(TP)->2.25"

Is it really safe? I would think it would be a bad thing... unless it went from 2.25"->3". Big, Big, then small?

Demik · 05-20-2004, 07:07 PM

stock boost for sure.. so would i be cool if i drive like a grandma?

Pepperoni · 05-20-2004, 07:42 PM

If 3"->2.25" has no problems with back pressure or whatnot...then maybe, but I have the same question as you. I thought it was bad to go from big to small

TheTimanator · 05-20-2004, 08:20 PM

It shouldn't hurt anything. I'm not sure how your gonna bolt them together but I don't see how it would hurt anything at 7 psi and your not driving like a maniac. I mean what is the JDM S13's exhaust piping? prolly close to ours but don't quote me on that. As far as going big to small.... My last car went from 2.75" piping to 2" but that was NA. Sounded like crap too LOL but never hurt anything....

Just do it, but be careful. It's not like it's a permenant situation anyway....

TokyoNights · 05-20-2004, 08:27 PM

I have 2.5 in downpipe with 2in catback, was running 10psi with no problems,,driving hard too.

TheTimanator · 05-20-2004, 08:58 PM

Quote:

Originally Posted by mikespeed

I have 2.5 in downpipe with 2in catback, was running 10psi with no problems,,driving hard too.

well, that answers that question. HAHA

Demik · 05-20-2004, 11:39 PM

thanks guys for all the help

05-20-2004, 05:32 PM	#1
Demik Zilvia Addict Join Date: Aug 2003 Location: cali Posts: 739 Trader Rating: (0) Feedback Score: 0 reviews	stock exhuast q just a quick question.. would it be "safe" to run my stock exhuast on my sr with 3 inch dp and 3 inch test pipe. just untill i get my new cool exhuast in the mail? thanks in advance

05-20-2004, 05:53 PM	#2
TheTimanator Post Whore! Join Date: Apr 2002 Location: Nashville Age: 41 Posts: 2,535 Trader Rating: (1) Rides Gallery: TheTimanator Feedback Score: 1 reviews	running stock boost? Sure. __________________ 89 S13 hatch/////98 Subaru 2.5RS

05-20-2004, 06:48 PM	#3
Pepperoni Zilvia Addict Join Date: Jun 2003 Location: norcal Posts: 750 Trader Rating: (0) Feedback Score: 0 reviews	So it would be 3"(DP)->3"(TP)->2.25" Is it really safe? I would think it would be a bad thing... unless it went from 2.25"->3". Big, Big, then small? __________________ Turbo piping, Intakes and More: http://www.pipingpro.com

05-20-2004, 07:42 PM	#5
Pepperoni Zilvia Addict Join Date: Jun 2003 Location: norcal Posts: 750 Trader Rating: (0) Feedback Score: 0 reviews	If 3"->2.25" has no problems with back pressure or whatnot...then maybe, but I have the same question as you. I thought it was bad to go from big to small __________________ Turbo piping, Intakes and More: http://www.pipingpro.com

05-20-2004, 08:20 PM	#6
TheTimanator Post Whore! Join Date: Apr 2002 Location: Nashville Age: 41 Posts: 2,535 Trader Rating: (1) Rides Gallery: TheTimanator Feedback Score: 1 reviews	It shouldn't hurt anything. I'm not sure how your gonna bolt them together but I don't see how it would hurt anything at 7 psi and your not driving like a maniac. I mean what is the JDM S13's exhaust piping? prolly close to ours but don't quote me on that. As far as going big to small.... My last car went from 2.75" piping to 2" but that was NA. Sounded like crap too LOL but never hurt anything.... Just do it, but be careful. It's not like it's a permenant situation anyway.... __________________ 89 S13 hatch/////98 Subaru 2.5RS

05-20-2004, 07:07 PM	#4
Demik Zilvia Addict Join Date: Aug 2003 Location: cali Posts: 739 Trader Rating: (0) Feedback Score: 0 reviews	stock boost for sure.. so would i be cool if i drive like a grandma?

05-20-2004, 08:27 PM	#7
TokyoNights Zilvia FREAK! Join Date: Dec 2002 Location: garage Age: 42 Posts: 1,215 Trader Rating: (2) Rides Gallery: TokyoNights Feedback Score: 2 reviews	I have 2.5 in downpipe with 2in catback, was running 10psi with no problems,,driving hard too.

05-20-2004, 11:39 PM	#9
Demik Zilvia Addict Join Date: Aug 2003 Location: cali Posts: 739 Trader Rating: (0) Feedback Score: 0 reviews	thanks guys for all the help